diff --git a/parameters/dial_conversion.card b/parameters/dial_conversion.card
index 0227a07..7a50e83 100644
--- a/parameters/dial_conversion.card
+++ b/parameters/dial_conversion.card
@@ -1,38 +1,46 @@
# par Name Units Nominal FracErr ConvFunc
-neut_parameter MaCCQE GeV 1.21*(1.0+x*0.16)
+neut_parameter MaCCQE GeV 1.21*(1.0+x*0.16)
neut_parameter MaNFFRES GeV 0.95*(1.0+x*0.157894737)
neut_parameter CA5RES x 1.01*(1.0+x*0.247524752)
neut_parameter BgSclRES x 1.30*(1.0+x*0.153846154)
neut_parameter FrAbs_pi x 1.1*(1.0+x*0.5)
-neut_parameter FrInelLow_pi x 1*(1.0+x*0.5)
+neut_parameter FrInelLow_pi x 1.0+x*0.5
neut_parameter FrInelHigh_pi x 1.8*(1.0+x*0.3)
-neut_parameter FrPiProd_pi x 1*(1.0+x*0.5)
-neut_parameter FrCExLow_pi x 1*(1.0+x*0.5)
+neut_parameter FrPiProd_pi x 1.0+x*0.5
+neut_parameter FrCExLow_pi x 1.0+x*0.5
neut_parameter FrCExHigh_pi x 1.8*(1.0+x*0.3)
niwg_parameter NIWGMEC_Norm_C12 % 100.0*(1.0+x)
niwg_parameter VecFFCCQE MDLQE x
niwg_parameter CCQEFermiSurfMom MeV 217*(1.0+x*0.15)
t2k_parameter NIWG2014a_pF_C12 MeV 217*(1.0+x*0.073733)
t2k_parameter NIWG2014a_pF_O16 MeV 225*(1.0+x*0.071111)
t2k_parameter NIWGMEC_PDDWeight_C12 x 0.5*(1.0+x*1.0)
t2k_parameter NIWGMEC_PDDWeight_O16 x 0.5*(1.0+x*1.0)
-t2k_parameter NXSec_MaCCQE GeV 1.21*(1.0+x*0.165289256)
+t2k_parameter NIWG2012a_dismpishp x 1.0*(1.0+x*0.4)
+t2k_parameter NXSec_MaCCQE GeV 1.21*(1.0+x*0.165289256)
t2k_parameter NXSec_MaNFFRES GeV 0.95*(1.0+x*0.157894737)
t2k_parameter NXSec_CA5RES x 1.01*(1.0+x*0.247524752)
-t2k_parameter NXSec_BgSclCCRES x 1.30*(1.0+x*0.153846154)
+t2k_parameter NXSec_BgSclRES x 1.30*(1.0+x*0.153846154)
+
+t2k_parameter NCasc_FrAbs_pi x 1.1*(1.0+x*0.5)
+t2k_parameter NCasc_FrInelLow_pi x 1.0+x*0.5
+t2k_parameter NCasc_FrInelHigh_pi x 1.8*(1.0+x*0.3)
+t2k_parameter NCasc_FrPiProd_pi x 1.0+x*0.5
+t2k_parameter NCasc_FrCExLow_pi x 1.0+x*0.5
+t2k_parameter NCasc_FrCExHigh_pi x 1.8*(1.0+x*0.3)
t2k_parameter NIWG_Effective_rpaCCQE_A x 1.0*(1.0 + x*0.1)
t2k_parameter NIWG_Effective_rpaCCQE_B x 1.0*(1.0 + x*0.1)
t2k_parameter NIWG_Effective_rpaCCQE_C x 1.0*(1.0 + x*0.1)
t2k_parameter NIWG_Effective_rpaCCQE_D x 1.0*(1.0 + x*0.1)
t2k_parameter NIWG_Effective_rpaCCQE_U x 1.0*(1.0 + x*0.1)
nuwro_parameter kNuwro_Ma_CCQE MeV 1200*(1.0+x*0.160)
nuwro_parameter kNuwro_MaRES GeV 0.940*(1.0+x*0.1)
nuwro_parameter kNuwro_CA5 x 1.19*(1.0+x*0.1)
nuwro_parameter kNuwro_SPPBkgScale x 1.0*(1.0+x*0.26)
diff --git a/src/MCStudies/GenericFlux_Vectors.cxx b/src/MCStudies/GenericFlux_Vectors.cxx
index 045f0c0..0543dc5 100644
--- a/src/MCStudies/GenericFlux_Vectors.cxx
+++ b/src/MCStudies/GenericFlux_Vectors.cxx
@@ -1,339 +1,363 @@
// Copyright 2016 L. Pickering, P Stowell, R. Terri, C. Wilkinson, C. Wret
/*******************************************************************************
* This file is part of NUISANCE.
*
* NUISANCE is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* NUISANCE is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with NUISANCE. If not, see .
*******************************************************************************/
#include "GenericFlux_Vectors.h"
GenericFlux_Vectors::GenericFlux_Vectors(std::string name,
std::string inputfile, FitWeight *rw,
std::string type,
std::string fakeDataFile) {
// Measurement Details
fName = name;
eventVariables = NULL;
// Define our energy range for flux calcs
EnuMin = 0.;
EnuMax = 1E10; // Arbritrarily high energy limit
if (Config::HasPar("EnuMin")) {
EnuMin = Config::GetParD("EnuMin");
}
if (Config::HasPar("EnuMax")) {
EnuMax = Config::GetParD("EnuMax");
}
// Set default fitter flags
fIsDiag = true;
fIsShape = false;
fIsRawEvents = false;
// This function will sort out the input files automatically and parse all the
// inputs,flags,etc.
// There may be complex cases where you have to do this by hand, but usually
// this will do.
Measurement1D::SetupMeasurement(inputfile, type, rw, fakeDataFile);
eventVariables = NULL;
// Setup fDataHist as a placeholder
this->fDataHist = new TH1D(("empty_data"), ("empty-data"), 1, 0, 1);
this->SetupDefaultHist();
fFullCovar = StatUtils::MakeDiagonalCovarMatrix(fDataHist);
covar = StatUtils::GetInvert(fFullCovar);
// 1. The generator is organised in SetupMeasurement so it gives the
// cross-section in "per nucleon" units.
// So some extra scaling for a specific measurement may be required. For
// Example to get a "per neutron" measurement on carbon
// which we do here, we have to multiple by the number of nucleons 12 and
// divide by the number of neutrons 6.
// N.B. MeasurementBase::PredictedEventRate includes the 1E-38 factor that is
// often included here in other classes that directly integrate the event
// histogram. This method is used here as it now respects EnuMin and EnuMax
// correctly.
this->fScaleFactor =
(this->PredictedEventRate("width", 0, EnuMax) / double(fNEvents)) /
- this->TotalIntegratedFlux();
+ this->TotalIntegratedFlux("width");
LOG(SAM) << " Generic Flux Scaling Factor = " << fScaleFactor
<< " [= " << (GetEventHistogram()->Integral("width") * 1E-38) << "/("
- << (fNEvents + 0.) << "*" << this->TotalIntegratedFlux() << ")]"
+ << (fNEvents + 0.) << "*" << TotalIntegratedFlux("width") << ")]"
<< std::endl;
-
if (fScaleFactor <= 0.0) {
ERR(WRN) << "SCALE FACTOR TOO LOW " << std::endl;
throw;
}
// Setup our TTrees
this->AddEventVariablesToTree();
this->AddSignalFlagsToTree();
}
void GenericFlux_Vectors::AddEventVariablesToTree() {
// Setup the TTree to save everything
if (!eventVariables) {
Config::Get().out->cd();
eventVariables = new TTree((this->fName + "_VARS").c_str(),
(this->fName + "_VARS").c_str());
}
LOG(SAM) << "Adding Event Variables" << std::endl;
eventVariables->Branch("Mode", &Mode, "Mode/I");
eventVariables->Branch("cc", &cc, "cc/B");
eventVariables->Branch("PDGnu", &PDGnu, "PDGnu/I");
eventVariables->Branch("Enu_true", &Enu_true, "Enu_true/F");
eventVariables->Branch("tgt", &tgt, "tgt/I");
eventVariables->Branch("PDGLep", &PDGLep, "PDGLep/I");
eventVariables->Branch("ELep", &ELep, "ELep/F");
eventVariables->Branch("CosLep", &CosLep, "CosLep/F");
// Basic interaction kinematics
eventVariables->Branch("Q2", &Q2, "Q2/F");
eventVariables->Branch("q0", &q0, "q0/F");
eventVariables->Branch("q3", &q3, "q3/F");
eventVariables->Branch("Enu_QE", &Enu_QE, "Enu_QE/F");
eventVariables->Branch("Q2_QE", &Q2_QE, "Q2_QE/F");
eventVariables->Branch("W_nuc_rest", &W_nuc_rest, "W_nuc_rest/F");
eventVariables->Branch("W", &W, "W/F");
+ eventVariables->Branch("W_genie", &W_genie, "W_genie/F");
eventVariables->Branch("x", &x, "x/F");
eventVariables->Branch("y", &y, "y/F");
eventVariables->Branch("Eav", &Eav, "Eav/F");
eventVariables->Branch("EavAlt", &EavAlt, "EavAlt/F");
+ eventVariables->Branch("dalphat", &dalphat, "dalphat/F");
+ eventVariables->Branch("dpt", &dpt, "dpt/F");
+ eventVariables->Branch("dphit", &dphit, "dphit/F");
+ eventVariables->Branch("pnreco_C", &pnreco_C, "pnreco_C/F");
+
// Save outgoing particle vectors
eventVariables->Branch("nfsp", &nfsp, "nfsp/I");
eventVariables->Branch("px", px, "px[nfsp]/F");
eventVariables->Branch("py", py, "py[nfsp]/F");
eventVariables->Branch("pz", pz, "pz[nfsp]/F");
eventVariables->Branch("E", E, "E[nfsp]/F");
eventVariables->Branch("pdg", pdg, "pdg[nfsp]/I");
// Event Scaling Information
eventVariables->Branch("Weight", &Weight, "Weight/F");
eventVariables->Branch("InputWeight", &InputWeight, "InputWeight/F");
eventVariables->Branch("RWWeight", &RWWeight, "RWWeight/F");
// Should be a double because may be 1E-39 and less
eventVariables->Branch("fScaleFactor", &fScaleFactor, "fScaleFactor/D");
// The customs
eventVariables->Branch("CustomWeight", &CustomWeight, "CustomWeight/F");
eventVariables->Branch("CustomWeightArray", CustomWeightArray, "CustomWeightArray[6]/F");
return;
}
void GenericFlux_Vectors::FillEventVariables(FitEvent *event) {
ResetVariables();
// Fill Signal Variables
FillSignalFlags(event);
LOG(DEB) << "Filling signal" << std::endl;
// Now fill the information
Mode = event->Mode;
cc = (abs(event->Mode) < 30);
// Get the incoming neutrino and outgoing lepton
FitParticle *nu = event->GetNeutrinoIn();
FitParticle *lep = event->GetHMFSAnyLepton();
PDGnu = nu->fPID;
Enu_true = nu->fP.E() / 1E3;
tgt = event->fTargetPDG;
if (lep != NULL) {
PDGLep = lep->fPID;
ELep = lep->fP.E() / 1E3;
CosLep = cos(nu->fP.Vect().Angle(lep->fP.Vect()));
// Basic interaction kinematics
Q2 = -1 * (nu->fP - lep->fP).Mag2() / 1E6;
q0 = (nu->fP - lep->fP).E() / 1E3;
q3 = (nu->fP - lep->fP).Vect().Mag() / 1E3;
// These assume C12 binding from MINERvA... not ideal
Enu_QE = FitUtils::EnuQErec(lep->fP, CosLep, 34., true);
Q2_QE = FitUtils::Q2QErec(lep->fP, CosLep, 34., true);
Eav = FitUtils::GetErecoil_MINERvA_LowRecoil(event)/1.E3;
EavAlt = FitUtils::Eavailable(event)/1.E3;
// Get W_true with assumption of initial state nucleon at rest
float m_n = (float)PhysConst::mass_proton;
// Q2 assuming nucleon at rest
W_nuc_rest = sqrt(-Q2 + 2 * m_n * q0 + m_n * m_n);
// True Q2
W = sqrt(-Q2 + 2 * m_n * q0 + m_n * m_n);
x = Q2 / (2 * m_n * q0);
y = 1 - ELep / Enu_true;
+
+ dalphat = FitUtils::Get_STV_dalphat(event, PDGnu, true);
+ dpt = FitUtils::Get_STV_dpt(event, PDGnu, true);
+ dphit = FitUtils::Get_STV_dphit(event, PDGnu, true);
+ pnreco_C = FitUtils::Get_pn_reco_C(event, PDGnu, true);
}
// Loop over the particles and store all the final state particles in a vector
for (UInt_t i = 0; i < event->Npart(); ++i) {
bool part_alive = event->PartInfo(i)->fIsAlive &&
- event->PartInfo(i)->Status() == kFinalState;
+ event->PartInfo(i)->Status() == kFinalState;
if (!part_alive) continue;
partList.push_back(event->PartInfo(i));
}
// Save outgoing particle vectors
nfsp = (int)partList.size();
for (int i = 0; i < nfsp; ++i) {
px[i] = partList[i]->fP.X() / 1E3;
py[i] = partList[i]->fP.Y() / 1E3;
pz[i] = partList[i]->fP.Z() / 1E3;
E[i] = partList[i]->fP.E() / 1E3;
pdg[i] = partList[i]->fPID;
}
+#ifdef __GENIE_ENABLED__
+ if (event->fType == kGENIE) {
+ EventRecord * gevent = static_cast(event->genie_event->event);
+ const Interaction * interaction = gevent->Summary();
+ const Kinematics & kine = interaction->Kine();
+ double W_genie = kine.W();
+ }
+#endif
+
// Fill event weights
Weight = event->RWWeight * event->InputWeight;
RWWeight = event->RWWeight;
InputWeight = event->InputWeight;
// And the Customs
CustomWeight = event->CustomWeight;
for (int i = 0; i < 6; ++i) {
CustomWeightArray[i] = event->CustomWeightArray[i];
}
// Fill the eventVariables Tree
eventVariables->Fill();
return;
};
//********************************************************************
void GenericFlux_Vectors::ResetVariables() {
-//********************************************************************
+ //********************************************************************
cc = false;
// Reset all Function used to extract any variables of interest to the event
Mode = PDGnu = tgt = PDGLep = 0;
Enu_true = ELep = CosLep = Q2 = q0 = q3 = Enu_QE = Q2_QE = W_nuc_rest = W = x = y = Eav = EavAlt = -999.9;
+ W_genie = -999;
+ // Other fun variables
+ // MINERvA-like ones
+ dalphat = dpt = dphit = pnreco_C = -999.99;
+
nfsp = 0;
for (int i = 0; i < kMAX; ++i){
px[i] = py[i] = pz[i] = E[i] = -999;
pdg[i] = 0;
}
Weight = InputWeight = RWWeight = 0.0;
CustomWeight = 0.0;
for (int i = 0; i < 6; ++i) CustomWeightArray[i] = 0.0;
partList.clear();
flagCCINC = flagNCINC = flagCCQE = flagCC0pi = flagCCQELike = flagNCEL = flagNC0pi = flagCCcoh = flagNCcoh = flagCC1pip = flagNC1pip = flagCC1pim = flagNC1pim = flagCC1pi0 = flagNC1pi0 = false;
}
//********************************************************************
void GenericFlux_Vectors::FillSignalFlags(FitEvent *event) {
//********************************************************************
// Some example flags are given from SignalDef.
// See src/Utils/SignalDef.cxx for more.
int nuPDG = event->PartInfo(0)->fPID;
// Generic signal flags
flagCCINC = SignalDef::isCCINC(event, nuPDG);
flagNCINC = SignalDef::isNCINC(event, nuPDG);
flagCCQE = SignalDef::isCCQE(event, nuPDG);
flagCCQELike = SignalDef::isCCQELike(event, nuPDG);
flagCC0pi = SignalDef::isCC0pi(event, nuPDG);
flagNCEL = SignalDef::isNCEL(event, nuPDG);
flagNC0pi = SignalDef::isNC0pi(event, nuPDG);
flagCCcoh = SignalDef::isCCCOH(event, nuPDG, 211);
flagNCcoh = SignalDef::isNCCOH(event, nuPDG, 111);
flagCC1pip = SignalDef::isCC1pi(event, nuPDG, 211);
flagNC1pip = SignalDef::isNC1pi(event, nuPDG, 211);
flagCC1pim = SignalDef::isCC1pi(event, nuPDG, -211);
flagNC1pim = SignalDef::isNC1pi(event, nuPDG, -211);
flagCC1pi0 = SignalDef::isCC1pi(event, nuPDG, 111);
flagNC1pi0 = SignalDef::isNC1pi(event, nuPDG, 111);
}
void GenericFlux_Vectors::AddSignalFlagsToTree() {
if (!eventVariables) {
Config::Get().out->cd();
eventVariables = new TTree((this->fName + "_VARS").c_str(),
- (this->fName + "_VARS").c_str());
+ (this->fName + "_VARS").c_str());
}
LOG(SAM) << "Adding signal flags" << std::endl;
// Signal Definitions from SignalDef.cxx
eventVariables->Branch("flagCCINC", &flagCCINC, "flagCCINC/O");
eventVariables->Branch("flagNCINC", &flagNCINC, "flagNCINC/O");
eventVariables->Branch("flagCCQE", &flagCCQE, "flagCCQE/O");
eventVariables->Branch("flagCC0pi", &flagCC0pi, "flagCC0pi/O");
eventVariables->Branch("flagCCQELike", &flagCCQELike, "flagCCQELike/O");
eventVariables->Branch("flagNCEL", &flagNCEL, "flagNCEL/O");
eventVariables->Branch("flagNC0pi", &flagNC0pi, "flagNC0pi/O");
eventVariables->Branch("flagCCcoh", &flagCCcoh, "flagCCcoh/O");
eventVariables->Branch("flagNCcoh", &flagNCcoh, "flagNCcoh/O");
eventVariables->Branch("flagCC1pip", &flagCC1pip, "flagCC1pip/O");
eventVariables->Branch("flagNC1pip", &flagNC1pip, "flagNC1pip/O");
eventVariables->Branch("flagCC1pim", &flagCC1pim, "flagCC1pim/O");
eventVariables->Branch("flagNC1pim", &flagNC1pim, "flagNC1pim/O");
eventVariables->Branch("flagCC1pi0", &flagCC1pi0, "flagCC1pi0/O");
eventVariables->Branch("flagNC1pi0", &flagNC1pi0, "flagNC1pi0/O");
};
void GenericFlux_Vectors::Write(std::string drawOpt) {
// First save the TTree
eventVariables->Write();
// Save Flux and Event Histograms too
GetInput()->GetFluxHistogram()->Write();
GetInput()->GetEventHistogram()->Write();
return;
}
// Override functions which aren't really necessary
bool GenericFlux_Vectors::isSignal(FitEvent *event) {
(void)event;
return true;
};
void GenericFlux_Vectors::ScaleEvents() { return; }
void GenericFlux_Vectors::ApplyNormScale(float norm) {
this->fCurrentNorm = norm;
return;
}
void GenericFlux_Vectors::FillHistograms() { return; }
void GenericFlux_Vectors::ResetAll() {
eventVariables->Reset();
return;
}
float GenericFlux_Vectors::GetChi2() { return 0.0; }
diff --git a/src/MCStudies/GenericFlux_Vectors.h b/src/MCStudies/GenericFlux_Vectors.h
index 921b247..101335b 100644
--- a/src/MCStudies/GenericFlux_Vectors.h
+++ b/src/MCStudies/GenericFlux_Vectors.h
@@ -1,127 +1,133 @@
// Copyright 2016 L. Pickering, P Stowell, R. Terri, C. Wilkinson, C. Wret
/*******************************************************************************
* This file is part of NUISANCE.
*
* NUISANCE is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* NUISANCE is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with NUISANCE. If not, see .
*******************************************************************************/
#ifndef GenericFlux_Vectors_H_SEEN
#define GenericFlux_Vectors_H_SEEN
#include "Measurement1D.h"
+#include "FitEvent.h"
class GenericFlux_Vectors : public Measurement1D {
public:
GenericFlux_Vectors(std::string name, std::string inputfile, FitWeight *rw, std::string type, std::string fakeDataFile);
virtual ~GenericFlux_Vectors() {};
//! Grab info from event
void FillEventVariables(FitEvent *event);
//! Fill signal flags
void FillSignalFlags(FitEvent *event);
void ResetVariables();
//! Fill Custom Histograms
void FillHistograms();
//! ResetAll
void ResetAll();
//! Scale
void ScaleEvents();
//! Norm
void ApplyNormScale(float norm);
//! Define this samples signal
bool isSignal(FitEvent *nvect);
//! Write Files
void Write(std::string drawOpt);
//! Get Chi2
float GetChi2();
void AddEventVariablesToTree();
void AddSignalFlagsToTree();
private:
TTree* eventVariables;
std::vector partList;
int Mode;
bool cc;
int PDGnu;
int tgt;
int PDGLep;
float ELep;
float CosLep;
// Basic interaction kinematics
float Q2;
float q0;
float q3;
float Enu_QE;
float Enu_true;
float Q2_QE;
float W_nuc_rest;
float W;
float x;
float y;
float Eav;
float EavAlt;
+ float dalphat;
+ float W_genie;
+ float dpt;
+ float dphit;
+ float pnreco_C;
// Save outgoing particle vectors
int nfsp;
static const int kMAX = 200;
float px[kMAX];
float py[kMAX];
float pz[kMAX];
float E[kMAX];
int pdg[kMAX];
// Basic event info
float Weight;
float InputWeight;
float RWWeight;
double fScaleFactor;
// Custom weights
float CustomWeight;
float CustomWeightArray[6];
// Generic signal flags
bool flagCCINC;
bool flagNCINC;
bool flagCCQE;
bool flagCC0pi;
bool flagCCQELike;
bool flagNCEL;
bool flagNC0pi;
bool flagCCcoh;
bool flagNCcoh;
bool flagCC1pip;
bool flagNC1pip;
bool flagCC1pim;
bool flagNC1pim;
bool flagCC1pi0;
bool flagNC1pi0;
};
#endif
diff --git a/src/Reweight/BeRPA.h b/src/Reweight/BeRPA.h
new file mode 100644
index 0000000..d6e85c8
--- /dev/null
+++ b/src/Reweight/BeRPA.h
@@ -0,0 +1,93 @@
+#ifndef _ERPA_H_SEEN_
+#define _ERPA_H_SEEN_
+
+#include
+#include
+
+// =====================
+//
+// Roughly a copy/paste job from NIWGReWeight/NIWGReWeightEffectiveRPA.cc/h
+// Written by Asmita Redij, University of Bern
+// Implemented in MaCh3 by Clarence Wret: c.wret14@imperial.ac.uk
+//
+// =====================
+//
+// Purpose:
+//
+// eRPA attempts to mimic Nieves RPA calculation in functional form (cubic, switching to exponential)
+// Currently, there are no RPA shape parameters to include as RPA systematics
+// eRPA remedies this by ffitting a functional form to the Nieves calculation
+//
+// Defaults have been fit to Nieves RPA calculation
+// +/- 1 sigma in eRPA are also set after a fit to the +/- 1 sigma from Nieves RPA
+//
+// The eRPA calculation is a function of Q2 and return a RPA/no-RPA correction factor for a given value of Q2
+// It should currently only be applied to CCQE (or 2p2h?) interactions on nuclear targets (i.e. ignore H interactions!)
+//
+//
+// The eRPA calculation is a function which depends on five parameters. The naming of the parameters has changed as work
+// has developed on eRPA. Originally, eRPA was discussed in terms of five parameters: A, B, C, D, and U. The interpretation
+// of these parameters is:
+// Polynomial terms:
+// A = RPA correction at Q2 = 0
+// B = Slope of RPA correction at Q2 = 0
+// C = RPA correction when polynominal switches to exponential (when Q2 = U)
+// Exponential terms:
+// D = Controls the damping constant of the exponential when Q2 > U
+// Control terms:
+// U = 1.20, the value of Q2 where we switch from polynomial to exponential.
+// Can be varied but is in Jan 2016 not recommended use.
+//
+// We have now changed to describing eRPA in terms of the five parameters A, B, D, E, and U. The formula is identical
+// to the one which depends on A, B, C, D, and U. The relation between the new and old parameters is:
+// A (old) = A (new)
+// B (old) = B (new)
+// C (old) = D (new)
+// D (old) = E (new)
+// U (old) = U (new)
+//
+// To make thing extra confusing, the new parameterisation also includes a parameter C given by
+// C = D+U*E*(D-1)/3
+// This is *not* related to C in the old parameterisation, and is *not* directly used as a parameter by us (it's indirectly
+// determined by the values of D, U, and E)
+//
+// More info about the eRPA parameterisation (and anything else you could possibly want to know!) is in T2K-TN-309.
+// Some more info about eRPA is also available in the slides at http://www.t2k.org/asg/oagroup/meeting/2016/banffoa27seppm/ffsanderpa/
+// (beware: they use the "old" A,B,C,D,U parameter names).
+//
+// =====================
+
+// Calculates the absolute eRPA for given Q2, BERNSTEIN STYLE
+inline double const calcRPA(const double Q2, const double A, const double B, const double D, const double E, const double U = 1.20) {
+
+ // Callum's eye-balled nominals
+ // A = 0.6
+ // B = 1.0
+ // D = 1.2
+ // E = 1.0
+ // U = 1.2
+ //
+ // Callum's fitted nominals
+ // A = 0.59 +/- 20%
+ // B = 1.05 +/- 20%
+ // D = 1.13 +/- 15%
+ // E = 0.88 +/- 40%
+ // U = 1.2
+
+ // Kept for convenience
+ double eRPA = 1.;
+
+ // Q2 transition; less than U -> polynominal
+ if (Q2 < U) {
+ // xprime as prescribed by Callum
+ const double xprime = Q2/U;
+ const double C = D + U*E*(D-1)/3.;
+ eRPA = A*(1-xprime)*(1-xprime)*(1-xprime) + 3*B*(1-xprime)*(1-xprime)*xprime + 3*C*(1-xprime)*xprime*xprime + D*xprime*xprime*xprime;
+ } else {
+ eRPA = 1 + (D-1)*exp(-E*(Q2-U));
+ }
+
+ return eRPA;
+};
+
+#endif
diff --git a/src/Utils/FitUtils.cxx b/src/Utils/FitUtils.cxx
index 225c98c..87b1efe 100644
--- a/src/Utils/FitUtils.cxx
+++ b/src/Utils/FitUtils.cxx
@@ -1,1095 +1,1186 @@
// Copyright 2016 L. Pickering, P Stowell, R. Terri, C. Wilkinson, C. Wret
/*******************************************************************************
* This file is part of NUISANCE.
*
* NUISANCE is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* NUISANCE is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with NUISANCE. If not, see .
*******************************************************************************/
#include "FitUtils.h"
/*
MISC Functions
*/
//********************************************************************
double *FitUtils::GetArrayFromMap(std::vector invals,
std::map inmap) {
//********************************************************************
double *outarr = new double[invals.size()];
int count = 0;
for (size_t i = 0; i < invals.size(); i++) {
outarr[count++] = inmap[invals.at(i)];
}
return outarr;
}
/*
MISC Event
*/
//********************************************************************
// Returns the kinetic energy of a particle in GeV
double FitUtils::T(TLorentzVector part) {
//********************************************************************
double E_part = part.E() / 1000.;
double p_part = part.Vect().Mag() / 1000.;
double m_part = sqrt(E_part * E_part - p_part * p_part);
double KE_part = E_part - m_part;
return KE_part;
};
//********************************************************************
// Returns the momentum of a particle in GeV
double FitUtils::p(TLorentzVector part) {
//********************************************************************
double p_part = part.Vect().Mag() / 1000.;
return p_part;
};
double FitUtils::p(FitParticle *part) { return FitUtils::p(part->fP); };
//********************************************************************
// Returns the angle between two particles in radians
double FitUtils::th(TLorentzVector part1, TLorentzVector part2) {
//********************************************************************
double th = part1.Vect().Angle(part2.Vect());
return th;
};
double FitUtils::th(FitParticle *part1, FitParticle *part2) {
return FitUtils::th(part1->fP, part2->fP);
};
// T2K CC1pi+ helper functions
//
//********************************************************************
// Returns the angle between q3 and the pion defined in Raquel's CC1pi+ on CH
// paper
// Uses "MiniBooNE formula" for Enu, here called EnuCC1pip_T2K_MB
//********************************************************************
double FitUtils::thq3pi_CC1pip_T2K(TLorentzVector pnu, TLorentzVector pmu,
TLorentzVector ppi) {
// Want this in GeV
TVector3 p_mu = pmu.Vect() * (1. / 1000.);
// Get the reconstructed Enu
// We are not using Michel e sample, so we have pion kinematic information
double Enu = EnuCC1piprec(pnu, pmu, ppi, true);
// Get neutrino unit direction, multiply by reconstructed Enu
TVector3 p_nu = pnu.Vect() * (1. / (pnu.Vect().Mag())) * Enu;
TVector3 p_pi = ppi.Vect() * (1. / 1000.);
// This is now in GeV
TVector3 q3 = (p_nu - p_mu);
// Want this in GeV
double th_q3_pi = q3.Angle(p_pi);
return th_q3_pi;
}
//********************************************************************
// Returns the q3 defined in Raquel's CC1pi+ on CH paper
// Uses "MiniBooNE formula" for Enu
//********************************************************************
double FitUtils::q3_CC1pip_T2K(TLorentzVector pnu, TLorentzVector pmu,
TLorentzVector ppi) {
// Can't use the true Enu here; need to reconstruct it
// We do have Michel e- here so reconstruct Enu by "MiniBooNE formula" without
// pion kinematics
// The bool false refers to that we don't have pion kinematics
// Last bool refers to if we have pion kinematic information or not
double Enu = EnuCC1piprec(pnu, pmu, ppi, false);
TVector3 p_mu = pmu.Vect() * (1. / 1000.);
TVector3 p_nu = pnu.Vect() * (1. / pnu.Vect().Mag()) * Enu;
double q3 = (p_nu - p_mu).Mag();
return q3;
}
//********************************************************************
// Returns the W reconstruction from Raquel CC1pi+ CH thesis
// Uses the MiniBooNE formula Enu
//********************************************************************
double FitUtils::WrecCC1pip_T2K_MB(TLorentzVector pnu, TLorentzVector pmu,
TLorentzVector ppi) {
double E_mu = pmu.E() / 1000.;
double p_mu = pmu.Vect().Mag() / 1000.;
double E_nu = EnuCC1piprec(pnu, pmu, ppi, false);
double a1 = (E_nu + PhysConst::mass_neutron) - E_mu;
double a2 = E_nu - p_mu;
double wrec = sqrt(a1 * a1 - a2 * a2);
return wrec;
}
//********************************************************
double FitUtils::ProtonQ2QErec(double pE, double binding) {
//********************************************************
const double V = binding / 1000.; // binding potential
const double mn = PhysConst::mass_neutron; // neutron mass
const double mp = PhysConst::mass_proton; // proton mass
const double mn_eff = mn - V; // effective proton mass
const double pki = (pE / 1000.0) - mp;
double q2qe = mn_eff * mn_eff - mp * mp + 2 * mn_eff * (pki + mp - mn_eff);
return q2qe;
};
//********************************************************************
double FitUtils::EnuQErec(TLorentzVector pmu, double costh, double binding,
bool neutrino) {
//********************************************************************
// Convert all values to GeV
const double V = binding / 1000.; // binding potential
const double mn = PhysConst::mass_neutron; // neutron mass
const double mp = PhysConst::mass_proton; // proton mass
double mN_eff = mn - V;
double mN_oth = mp;
if (!neutrino) {
mN_eff = mp - V;
mN_oth = mn;
}
double el = pmu.E() / 1000.;
double pl = (pmu.Vect().Mag()) / 1000.; // momentum of lepton
double ml = sqrt(el * el - pl * pl); // lepton mass
double rEnu =
(2 * mN_eff * el - ml * ml + mN_oth * mN_oth - mN_eff * mN_eff) /
(2 * (mN_eff - el + pl * costh));
return rEnu;
};
double FitUtils::Q2QErec(TLorentzVector pmu, double costh, double binding, bool neutrino) {
double el = pmu.E() / 1000.;
double pl = (pmu.Vect().Mag()) / 1000.; // momentum of lepton
double ml = sqrt(el * el - pl * pl); // lepton mass
double rEnu = EnuQErec(pmu, costh, binding, neutrino);
double q2 = -ml * ml + 2. * rEnu * (el - pl * costh);
return q2;
};
double FitUtils::Q2QErec(TLorentzVector Pmu, TLorentzVector Pnu, double binding, bool neutrino) {
double q2qe = Q2QErec(Pmu, cos(Pnu.Vect().Angle(Pmu.Vect())), binding, neutrino);
return q2qe;
}
double FitUtils::EnuQErec(double pl, double costh, double binding,
bool neutrino) {
if (pl < 0) return 0.; // Make sure nobody is silly
double mN_eff = PhysConst::mass_neutron - binding / 1000.;
double mN_oth = PhysConst::mass_proton;
if (!neutrino) {
mN_eff = PhysConst::mass_proton - binding / 1000.;
mN_oth = PhysConst::mass_neutron;
}
double ml = PhysConst::mass_muon;
double el = sqrt(pl * pl + ml * ml);
double rEnu =
(2 * mN_eff * el - ml * ml + mN_oth * mN_oth - mN_eff * mN_eff) /
(2 * (mN_eff - el + pl * costh));
return rEnu;
};
double FitUtils::Q2QErec(double pl, double costh, double binding,
bool neutrino) {
if (pl < 0) return 0.; // Make sure nobody is silly
double ml = PhysConst::mass_muon;
double el = sqrt(pl * pl + ml * ml);
double rEnu = EnuQErec(pl, costh, binding, neutrino);
double q2 = -ml * ml + 2. * rEnu * (el - pl * costh);
return q2;
};
//********************************************************************
// Reconstructs Enu for CC1pi0
// Very similar for CC1pi+ reconstruction
double FitUtils::EnuCC1pi0rec(TLorentzVector pnu, TLorentzVector pmu,
TLorentzVector ppi0) {
//********************************************************************
double E_mu = pmu.E() / 1000;
double p_mu = pmu.Vect().Mag() / 1000;
double m_mu = sqrt(E_mu * E_mu - p_mu * p_mu);
double th_nu_mu = pnu.Vect().Angle(pmu.Vect());
double E_pi0 = ppi0.E() / 1000;
double p_pi0 = ppi0.Vect().Mag() / 1000;
double m_pi0 = sqrt(E_pi0 * E_pi0 - p_pi0 * p_pi0);
double th_nu_pi0 = pnu.Vect().Angle(ppi0.Vect());
const double m_n = PhysConst::mass_neutron; // neutron mass
const double m_p = PhysConst::mass_proton; // proton mass
double th_pi0_mu = ppi0.Vect().Angle(pmu.Vect());
double rEnu = (m_mu * m_mu + m_pi0 * m_pi0 + m_n * m_n - m_p * m_p -
2 * m_n * (E_pi0 + E_mu) + 2 * E_pi0 * E_mu -
2 * p_pi0 * p_mu * cos(th_pi0_mu)) /
(2 * (E_pi0 + E_mu - p_pi0 * cos(th_nu_pi0) -
p_mu * cos(th_nu_mu) - m_n));
return rEnu;
};
//********************************************************************
// Reconstruct Q2 for CC1pi0
// Beware: uses true Enu, not reconstructed Enu
double FitUtils::Q2CC1pi0rec(TLorentzVector pnu, TLorentzVector pmu,
TLorentzVector ppi0) {
//********************************************************************
double E_mu = pmu.E() / 1000.; // energy of lepton in GeV
double p_mu = pmu.Vect().Mag() / 1000.; // momentum of lepton
double m_mu = sqrt(E_mu * E_mu - p_mu * p_mu); // lepton mass
double th_nu_mu = pnu.Vect().Angle(pmu.Vect());
// double rEnu = EnuCC1pi0rec(pnu, pmu, ppi0); //reconstructed neutrino energy
// Use true neutrino energy
double rEnu = pnu.E() / 1000.;
double q2 = -m_mu * m_mu + 2. * rEnu * (E_mu - p_mu * cos(th_nu_mu));
return q2;
};
//********************************************************************
// Reconstruct Enu for CC1pi+
// pionInfo reflects if we're using pion kinematics or not
// In T2K CC1pi+ CH the Michel tag is used for pion in which pion kinematic info
// is lost and Enu is reconstructed without pion kinematics
double FitUtils::EnuCC1piprec(TLorentzVector pnu, TLorentzVector pmu,
TLorentzVector ppi, bool pionInfo) {
//********************************************************************
double E_mu = pmu.E() / 1000.;
double p_mu = pmu.Vect().Mag() / 1000.;
double m_mu = sqrt(E_mu * E_mu - p_mu * p_mu);
double E_pi = ppi.E() / 1000.;
double p_pi = ppi.Vect().Mag() / 1000.;
double m_pi = sqrt(E_pi * E_pi - p_pi * p_pi);
const double m_n = PhysConst::mass_neutron; // neutron/proton mass
// should really take proton mass for proton interaction, neutron for neutron
// interaction. However, difference is pretty much negligable here!
// need this angle too
double th_nu_pi = pnu.Vect().Angle(ppi.Vect());
double th_nu_mu = pnu.Vect().Angle(pmu.Vect());
double th_pi_mu = ppi.Vect().Angle(pmu.Vect());
double rEnu = -999;
// If experiment doesn't have pion kinematic information (T2K CC1pi+ CH
// example of this; Michel e sample has no directional information on pion)
// We'll need to modify the reconstruction variables
if (!pionInfo) {
// Assumes that pion angle contribution contributes net zero
// Also assumes the momentum of reconstructed pions when using Michel
// electrons is 130 MeV
// So need to redefine E_pi and p_pi
// It's a little unclear what happens to the pmu . ppi term (4-vector); do
// we include the angular contribution?
// This below doesn't
th_nu_pi = M_PI / 2.;
p_pi = 0.130;
E_pi = sqrt(p_pi * p_pi + m_pi * m_pi);
// rEnu = (m_mu*m_mu + m_pi*m_pi - 2*m_n*(E_mu + E_pi) + 2*E_mu*E_pi -
// 2*p_mu*p_pi) / (2*(E_mu + E_pi - p_mu*cos(th_nu_mu) - m_n));
}
rEnu =
(m_mu * m_mu + m_pi * m_pi - 2 * m_n * (E_pi + E_mu) + 2 * E_pi * E_mu -
2 * p_pi * p_mu * cos(th_pi_mu)) /
(2 * (E_pi + E_mu - p_pi * cos(th_nu_pi) - p_mu * cos(th_nu_mu) - m_n));
return rEnu;
};
//********************************************************************
// Reconstruct neutrino energy from outgoing particles; will differ from the
// actual neutrino energy. Here we use assumption of a Delta resonance
double FitUtils::EnuCC1piprecDelta(TLorentzVector pnu, TLorentzVector pmu) {
//********************************************************************
const double m_Delta =
PhysConst::mass_delta; // PDG value for Delta mass in GeV
const double m_n = PhysConst::mass_neutron; // neutron/proton mass
// should really take proton mass for proton interaction, neutron for neutron
// interaction. However, difference is pretty much negligable here!
double E_mu = pmu.E() / 1000;
double p_mu = pmu.Vect().Mag() / 1000;
double m_mu = sqrt(E_mu * E_mu - p_mu * p_mu);
double th_nu_mu = pnu.Vect().Angle(pmu.Vect());
double rEnu = (m_Delta * m_Delta - m_n * m_n - m_mu * m_mu + 2 * m_n * E_mu) /
(2 * (m_n - E_mu + p_mu * cos(th_nu_mu)));
return rEnu;
};
// MOVE TO T2K UTILS!
//********************************************************************
// Reconstruct Enu using "extended MiniBooNE" as defined in Raquel's T2K TN
//
// Supposedly includes pion direction and binding energy of target nucleon
// I'm not convinced (yet), maybe
double FitUtils::EnuCC1piprec_T2K_eMB(TLorentzVector pnu, TLorentzVector pmu,
TLorentzVector ppi) {
//********************************************************************
// Unit vector for neutrino momentum
TVector3 p_nu_vect_unit = pnu.Vect() * (1. / pnu.E());
double E_mu = pmu.E() / 1000.;
TVector3 p_mu_vect = pmu.Vect() * (1. / 1000.);
double E_pi = ppi.E() / 1000.;
TVector3 p_pi_vect = ppi.Vect() * (1. / 1000.);
double E_bind =
27. / 1000.; // This should be roughly correct for CH; but not clear!
double m_p = PhysConst::mass_proton;
// Makes life a little easier, gonna square this one
double a1 = m_p - E_bind - E_mu - E_pi;
// Just gets the magnitude square of the muon and pion momentum vectors
double a2 = (p_mu_vect + p_pi_vect).Mag2();
// Gets the somewhat complicated scalar product between neutrino and
// (p_mu+p_pi), scaled to Enu
double a3 = p_nu_vect_unit * (p_mu_vect + p_pi_vect);
double rEnu =
(m_p * m_p - a1 * a1 + a2) / (2 * (m_p - E_bind - E_mu - E_pi + a3));
return rEnu;
}
//********************************************************************
// Reconstructed Q2 for CC1pi+
//
// enuType describes how the neutrino energy is reconstructed
// 0 uses true neutrino energy; case for MINERvA and MiniBooNE
// 1 uses "extended MiniBooNE" reconstructed (T2K CH)
// 2 uses "MiniBooNE" reconstructed (EnuCC1piprec with pionInfo = true) (T2K CH)
// "MiniBooNE" reconstructed (EnuCC1piprec with pionInfo = false, the
// case for T2K when using Michel tag) (T2K CH)
// 3 uses Delta for reconstruction (T2K CH)
double FitUtils::Q2CC1piprec(TLorentzVector pnu, TLorentzVector pmu,
TLorentzVector ppi, int enuType, bool pionInfo) {
//********************************************************************
double E_mu = pmu.E() / 1000.; // energy of lepton in GeV
double p_mu = pmu.Vect().Mag() / 1000.; // momentum of lepton
double m_mu = sqrt(E_mu * E_mu - p_mu * p_mu); // lepton mass
double th_nu_mu = pnu.Vect().Angle(pmu.Vect());
// Different ways of reconstructing the neutrino energy; default is just to
// use the truth (case 0)
double rEnu = -999;
switch (enuType) {
case 0: // True neutrino energy, default; this is the case for when Q2
// defined as Q2 true (MiniBooNE, MINERvA)
rEnu = pnu.E() / 1000.;
break;
case 1: // Extended MiniBooNE reconstructed, as defined by Raquel's CC1pi+
// CH T2K analysis
// Definitely uses pion info :)
rEnu = EnuCC1piprec_T2K_eMB(pnu, pmu, ppi);
break;
case 2: // MiniBooNE reconstructed, as defined by MiniBooNE and Raquel's
// CC1pi+ CH T2K analysis and Linda's CC1pi+ H2O
// Can have this with and without pion info, depending on if Michel tag
// used (Raquel)
rEnu = EnuCC1piprec(pnu, pmu, ppi, pionInfo);
break;
case 3:
rEnu = EnuCC1piprecDelta(pnu, pmu);
break;
} // No need for default here since default value of enuType = 0, defined in
// header
double q2 = -m_mu * m_mu + 2. * rEnu * (E_mu - p_mu * cos(th_nu_mu));
return q2;
};
//********************************************************************
// Returns the reconstructed W from a nucleon and an outgoing pion
//
// Could do this a lot more clever (pp + ppi).Mag() would do the job, but this
// would be less instructive
//********************************************************************
double FitUtils::MpPi(TLorentzVector pp, TLorentzVector ppi) {
double E_p = pp.E();
double p_p = pp.Vect().Mag();
double m_p = sqrt(E_p * E_p - p_p * p_p);
double E_pi = ppi.E();
double p_pi = ppi.Vect().Mag();
double m_pi = sqrt(E_pi * E_pi - p_pi * p_pi);
double th_p_pi = pp.Vect().Angle(ppi.Vect());
// fairly easy thing to derive since bubble chambers measure the proton!
double invMass = sqrt(m_p * m_p + m_pi * m_pi + 2 * E_p * E_pi -
2 * p_pi * p_p * cos(th_p_pi));
return invMass;
};
//********************************************************
// Reconstruct the hadronic mass using neutrino and muon
// Could technically do E_nu = EnuCC1pipRec(pnu,pmu,ppi) too, but this wwill be
// reconstructed Enu; so gives reconstructed Wrec which most of the time isn't
// used!
//
// Only MINERvA uses this so far; and the Enu is Enu_true
// If we want W_true need to take initial state nucleon motion into account
// Return value is in MeV!!!
double FitUtils::Wrec(TLorentzVector pnu, TLorentzVector pmu) {
//********************************************************
double E_mu = pmu.E();
double p_mu = pmu.Vect().Mag();
double m_mu = sqrt(E_mu * E_mu - p_mu * p_mu);
double th_nu_mu = pnu.Vect().Angle(pmu.Vect());
// The factor of 1000 is necessary for downstream functions
const double m_p = PhysConst::mass_proton * 1000;
// MINERvA cut on W_exp which is tuned to W_true; so use true Enu from
// generators
double E_nu = pnu.E();
double w_rec = sqrt(m_p * m_p + m_mu * m_mu - 2 * m_p * E_mu +
2 * E_nu * (m_p - E_mu + p_mu * cos(th_nu_mu)));
return w_rec;
};
//********************************************************
// Reconstruct the true hadronic mass using the initial state and muon
// Could technically do E_nu = EnuCC1pipRec(pnu,pmu,ppi) too, but this wwill be
// reconstructed Enu; so gives reconstructed Wrec which most of the time isn't
// used!
//
// No one seems to use this because it's fairly MC dependent!
// Return value is in MeV!!!
double FitUtils::Wtrue(TLorentzVector pnu, TLorentzVector pmu,
TLorentzVector pnuc) {
//********************************************************
// Could simply do the TLorentzVector operators here but this is more
// instructive?
// ... and prone to errors ...
double E_mu = pmu.E();
double p_mu = pmu.Vect().Mag();
double m_mu = sqrt(E_mu * E_mu - p_mu * p_mu);
double th_nu_mu = pnu.Vect().Angle(pmu.Vect());
double E_nuc = pnuc.E();
double p_nuc = pnuc.Vect().Mag();
double m_nuc = sqrt(E_nuc * E_nuc - p_nuc * p_nuc);
double th_nuc_mu = pmu.Vect().Angle(pnuc.Vect());
double th_nu_nuc = pnu.Vect().Angle(pnuc.Vect());
double E_nu = pnu.E();
double w_rec = sqrt(m_nuc * m_nuc + m_mu * m_mu - 2 * E_nu * E_mu +
2 * E_nu * p_mu * cos(th_nu_mu) - 2 * E_nuc * E_mu +
2 * p_nuc * p_mu * cos(th_nuc_mu) + 2 * E_nu * E_nuc -
2 * E_nu * p_nuc * cos(th_nu_nuc));
return w_rec;
};
double FitUtils::SumKE_PartVect(std::vector const fps) {
double sum = 0.0;
for (size_t p_it = 0; p_it < fps.size(); ++p_it) {
sum += fps[p_it]->KE();
}
return sum;
}
double FitUtils::SumTE_PartVect(std::vector const fps) {
double sum = 0.0;
for (size_t p_it = 0; p_it < fps.size(); ++p_it) {
sum += fps[p_it]->E();
}
return sum;
}
/*
E Recoil
*/
double FitUtils::GetErecoil_TRUE(FitEvent *event) {
// Get total energy of hadronic system.
double Erecoil = 0.0;
for (unsigned int i = 2; i < event->Npart(); i++) {
// Only final state
if (!event->PartInfo(i)->fIsAlive) continue;
if (event->PartInfo(i)->fNEUTStatusCode != 0) continue;
// Skip Lepton
if (abs(event->PartInfo(i)->fPID) == abs(event->PartInfo(0)->fPID) - 1)
continue;
// Add Up KE of protons and TE of everything else
if (event->PartInfo(i)->fPID == 2212 || event->PartInfo(i)->fPID == 2112) {
Erecoil +=
fabs(event->PartInfo(i)->fP.E()) - fabs(event->PartInfo(i)->fP.Mag());
} else {
Erecoil += event->PartInfo(i)->fP.E();
}
}
return Erecoil;
}
double FitUtils::GetErecoil_CHARGED(FitEvent *event) {
// Get total energy of hadronic system.
double Erecoil = 0.0;
for (unsigned int i = 2; i < event->Npart(); i++) {
// Only final state
if (!event->PartInfo(i)->fIsAlive) continue;
if (event->PartInfo(i)->fNEUTStatusCode != 0) continue;
// Skip Lepton
if (abs(event->PartInfo(i)->fPID) == abs(event->PartInfo(0)->fPID) - 1)
continue;
// Skip Neutral particles
if (event->PartInfo(i)->fPID == 2112 || event->PartInfo(i)->fPID == 111 ||
event->PartInfo(i)->fPID == 22)
continue;
// Add Up KE of protons and TE of everything else
if (event->PartInfo(i)->fPID == 2212) {
Erecoil +=
fabs(event->PartInfo(i)->fP.E()) - fabs(event->PartInfo(i)->fP.Mag());
} else {
Erecoil += event->PartInfo(i)->fP.E();
}
}
return Erecoil;
}
// MOVE TO MINERVA Utils!
double FitUtils::GetErecoil_MINERvA_LowRecoil(FitEvent *event) {
// Get total energy of hadronic system.
double Erecoil = 0.0;
for (unsigned int i = 2; i < event->Npart(); i++) {
// Only final state
if (!event->PartInfo(i)->fIsAlive) continue;
if (event->PartInfo(i)->fNEUTStatusCode != 0) continue;
// Skip Lepton
if (abs(event->PartInfo(i)->fPID) == 13) continue;
// Skip Neutrons particles
if (event->PartInfo(i)->fPID == 2112) continue;
int PID = event->PartInfo(i)->fPID;
// KE of Protons and charged pions
if (PID == 2212 or PID == 211 or PID == -211) {
// Erecoil += FitUtils::T(event->PartInfo(i)->fP);
Erecoil +=
fabs(event->PartInfo(i)->fP.E()) - fabs(event->PartInfo(i)->fP.Mag());
// Total Energy of non-neutrons
// } else if (PID != 2112 and PID < 999 and PID != 22 and abs(PID) !=
// 14) {
} else if (PID == 111 || PID == 11 || PID == -11 || PID == 22) {
Erecoil += (event->PartInfo(i)->fP.E());
}
}
return Erecoil;
}
// MOVE TO MINERVA Utils!
// The alternative Eavailble definition takes true q0 and subtracts the kinetic energy of neutrons and pion masses
// returns in MeV
double FitUtils::Eavailable(FitEvent *event) {
double Eav = 0.0;
// Now take q0 and subtract Eav
double q0 = event->GetNeutrinoIn()->fP.E();
if (event->GetHMFSParticle(13)) {
q0 -= event->GetHMFSParticle(13)->fP.E();
} else if (event->GetHMFSParticle(-13)) {
q0 -= event->GetHMFSParticle(-13)->fP.E();
} else if (event->GetHMFSParticle(14)) {
q0 -= event->GetHMFSParticle(14)->fP.E();
} else if (event->GetHMFSParticle(-14)) {
q0 -= event->GetHMFSParticle(-14)->fP.E();
}else {
std::cerr << "Found no Muon or Muon Neutrino" << std::endl;
}
for (unsigned int i = 2; i < event->Npart(); i++) {
// Only final state
if (!event->PartInfo(i)->fIsAlive) continue;
if (event->PartInfo(i)->fNEUTStatusCode != 0) continue;
int PID = event->PartInfo(i)->fPID;
// Neutrons
if (PID == 2112) {
// Adding kinetic energy of neutron
Eav += FitUtils::T(event->PartInfo(i)->fP)*1000.;
// All pion masses
} else if (abs(PID) == 211 || PID == 111) {
Eav += event->PartInfo(i)->fP.M();
}
}
return q0-Eav;
}
TVector3 GetVectorInTPlane(const TVector3 &inp, const TVector3 &planarNormal) {
TVector3 pnUnit = planarNormal.Unit();
double inpProjectPN = inp.Dot(pnUnit);
TVector3 InPlanarInput = inp - (inpProjectPN * pnUnit);
return InPlanarInput;
}
TVector3 GetUnitVectorInTPlane(const TVector3 &inp,
const TVector3 &planarNormal) {
return GetVectorInTPlane(inp, planarNormal).Unit();
}
Double_t GetDeltaPhiT(TVector3 const &V_lepton, TVector3 const &V_other,
TVector3 const &Normal, bool PiMinus = false) {
TVector3 V_lepton_T = GetUnitVectorInTPlane(V_lepton, Normal);
TVector3 V_other_T = GetUnitVectorInTPlane(V_other, Normal);
return PiMinus ? acos(V_lepton_T.Dot(V_other_T))
: (M_PI - acos(V_lepton_T.Dot(V_other_T)));
}
TVector3 GetDeltaPT(TVector3 const &V_lepton, TVector3 const &V_other,
TVector3 const &Normal) {
TVector3 V_lepton_T = GetVectorInTPlane(V_lepton, Normal);
TVector3 V_other_T = GetVectorInTPlane(V_other, Normal);
return V_lepton_T + V_other_T;
}
Double_t GetDeltaAlphaT(TVector3 const &V_lepton, TVector3 const &V_other,
TVector3 const &Normal, bool PiMinus = false) {
TVector3 DeltaPT = GetDeltaPT(V_lepton, V_other, Normal);
return GetDeltaPhiT(V_lepton, DeltaPT, Normal, PiMinus);
}
double FitUtils::Get_STV_dpt(FitEvent *event, int ISPDG, bool Is0pi) {
// Check that the neutrino exists
if (event->NumISParticle(ISPDG) == 0) {
return -9999;
}
// Return 0 if the proton or muon are missing
if (event->NumFSParticle(2212) == 0 ||
event->NumFSParticle(ISPDG + ((ISPDG < 0) ? 1 : -1)) == 0) {
return -9999;
}
// Now get the TVector3s for each particle
TVector3 const &NuP = event->GetHMISParticle(14)->fP.Vect();
TVector3 const &LeptonP =
event->GetHMFSParticle(ISPDG + ((ISPDG < 0) ? 1 : -1))->fP.Vect();
// Find the highest momentum proton in the event between 450 and 1200 MeV with theta_p < 70
TLorentzVector Pnu = event->GetNeutrinoIn()->fP;
int HMFSProton = 0;
double HighestMomentum = 0.0;
// Get the stack of protons
std::vector Protons = event->GetAllFSProton();
for (size_t i = 0; i < Protons.size(); ++i) {
if (Protons[i]->p() > 450 &&
Protons[i]->p() < 1200 &&
Protons[i]->P3().Angle(Pnu.Vect()) < (M_PI/180.0)*70.0 &&
Protons[i]->p() > HighestMomentum) {
HighestMomentum = Protons[i]->p();
HMFSProton = i;
}
}
// Now get the proton
TLorentzVector Pprot = Protons[HMFSProton]->fP;
// Get highest momentum proton in allowed proton range
TVector3 HadronP = Pprot.Vect();
// If we don't have a CC0pi signal definition we also add in pion momentum
if (!Is0pi) {
if (event->NumFSParticle(PhysConst::pdg_pions) == 0) {
return -9999;
}
// Count up pion momentum
TLorentzVector pp = event->GetHMFSParticle(PhysConst::pdg_pions)->fP;
HadronP += pp.Vect();
}
return GetDeltaPT(LeptonP, HadronP, NuP).Mag();
}
double FitUtils::Get_STV_dphit(FitEvent *event, int ISPDG, bool Is0pi) {
// Check that the neutrino exists
if (event->NumISParticle(ISPDG) == 0) {
return -9999;
}
// Return 0 if the proton or muon are missing
if (event->NumFSParticle(2212) == 0 ||
event->NumFSParticle(ISPDG + ((ISPDG < 0) ? 1 : -1)) == 0) {
return -9999;
}
// Now get the TVector3s for each particle
TVector3 const &NuP = event->GetHMISParticle(ISPDG)->fP.Vect();
TVector3 const &LeptonP =
event->GetHMFSParticle(ISPDG + ((ISPDG < 0) ? 1 : -1))->fP.Vect();
// Find the highest momentum proton in the event between 450 and 1200 MeV with theta_p < 70
TLorentzVector Pnu = event->GetNeutrinoIn()->fP;
int HMFSProton = 0;
double HighestMomentum = 0.0;
// Get the stack of protons
std::vector Protons = event->GetAllFSProton();
for (size_t i = 0; i < Protons.size(); ++i) {
if (Protons[i]->p() > 450 &&
Protons[i]->p() < 1200 &&
Protons[i]->P3().Angle(Pnu.Vect()) < (M_PI/180.0)*70.0 &&
Protons[i]->p() > HighestMomentum) {
HighestMomentum = Protons[i]->p();
HMFSProton = i;
}
}
// Now get the proton
TLorentzVector Pprot = Protons[HMFSProton]->fP;
// Get highest momentum proton in allowed proton range
TVector3 HadronP = Pprot.Vect();
if (!Is0pi) {
if (event->NumFSParticle(PhysConst::pdg_pions) == 0) {
return -9999;
}
TLorentzVector pp = event->GetHMFSParticle(PhysConst::pdg_pions)->fP;
HadronP += pp.Vect();
}
return GetDeltaPhiT(LeptonP, HadronP, NuP);
}
double FitUtils::Get_STV_dalphat(FitEvent *event, int ISPDG, bool Is0pi) {
// Check that the neutrino exists
if (event->NumISParticle(ISPDG) == 0) {
return -9999;
}
// Return 0 if the proton or muon are missing
if (event->NumFSParticle(2212) == 0 ||
event->NumFSParticle(ISPDG + ((ISPDG < 0) ? 1 : -1)) == 0) {
return -9999;
}
// Now get the TVector3s for each particle
TVector3 const &NuP = event->GetHMISParticle(ISPDG)->fP.Vect();
TVector3 const &LeptonP =
event->GetHMFSParticle(ISPDG + ((ISPDG < 0) ? 1 : -1))->fP.Vect();
// Find the highest momentum proton in the event between 450 and 1200 MeV with theta_p < 70
TLorentzVector Pnu = event->GetNeutrinoIn()->fP;
int HMFSProton = 0;
double HighestMomentum = 0.0;
// Get the stack of protons
std::vector Protons = event->GetAllFSProton();
for (size_t i = 0; i < Protons.size(); ++i) {
if (Protons[i]->p() > 450 &&
Protons[i]->p() < 1200 &&
Protons[i]->P3().Angle(Pnu.Vect()) < (M_PI/180.0)*70.0 &&
Protons[i]->p() > HighestMomentum) {
HighestMomentum = Protons[i]->p();
HMFSProton = i;
}
}
// Now get the proton
TLorentzVector Pprot = Protons[HMFSProton]->fP;
// Get highest momentum proton in allowed proton range
TVector3 HadronP = Pprot.Vect();
if (!Is0pi) {
if (event->NumFSParticle(PhysConst::pdg_pions) == 0) {
return -9999;
}
TLorentzVector pp = event->GetHMFSParticle(PhysConst::pdg_pions)->fP;
HadronP += pp.Vect();
}
return GetDeltaAlphaT(LeptonP, HadronP, NuP);
}
// As defined in PhysRevC.95.065501
// Using prescription from arXiv 1805.05486
// Returns in GeV
double FitUtils::Get_pn_reco_C(FitEvent *event, int ISPDG, bool Is0pi) {
const double mn = PhysConst::mass_neutron; // neutron mass
const double mp = PhysConst::mass_proton; // proton mass
// Check that the neutrino exists
if (event->NumISParticle(ISPDG) == 0) {
return -9999;
}
// Return 0 if the proton or muon are missing
if (event->NumFSParticle(2212) == 0 ||
event->NumFSParticle(ISPDG + ((ISPDG < 0) ? 1 : -1)) == 0) {
return -9999;
}
// Now get the TVector3s for each particle
TVector3 const &NuP = event->GetHMISParticle(14)->fP.Vect();
TVector3 const &LeptonP =
event->GetHMFSParticle(ISPDG + ((ISPDG < 0) ? 1 : -1))->fP.Vect();
// Find the highest momentum proton in the event between 450 and 1200 MeV with theta_p < 70
TLorentzVector Pnu = event->GetNeutrinoIn()->fP;
int HMFSProton = 0;
double HighestMomentum = 0.0;
// Get the stack of protons
std::vector Protons = event->GetAllFSProton();
for (size_t i = 0; i < Protons.size(); ++i) {
// Update the highest momentum particle
if (Protons[i]->p() > 450 &&
Protons[i]->p() < 1200 &&
Protons[i]->P3().Angle(Pnu.Vect()) < (M_PI/180.0)*70.0 &&
Protons[i]->p() > HighestMomentum) {
HighestMomentum = Protons[i]->p();
HMFSProton = i;
}
}
// Now get the proton
TLorentzVector Pprot = Protons[HMFSProton]->fP;
// Get highest momentum proton in allowed proton range
TVector3 HadronP = Pprot.Vect();
//TVector3 HadronP = event->GetHMFSParticle(2212)->fP.Vect();
double const el = event->GetHMFSParticle(ISPDG + ((ISPDG < 0) ? 1 : -1))->E()/1000.;
double const eh = Pprot.E()/1000.;
if (!Is0pi) {
if (event->NumFSParticle(PhysConst::pdg_pions) == 0) {
return -9999;
}
TLorentzVector pp = event->GetHMFSParticle(PhysConst::pdg_pions)->fP;
HadronP += pp.Vect();
}
TVector3 dpt = GetDeltaPT(LeptonP, HadronP, NuP);
double dptMag = dpt.Mag()/1000.;
double ma = 6*mn + 6*mp - 0.09216; // target mass (E is from PhysRevC.95.065501)
double map = ma - mn + 0.02713; // remnant mass
double pmul = LeptonP.Dot(NuP.Unit())/1000.;
double phl = HadronP.Dot(NuP.Unit())/1000.;
//double pmul = GetVectorInTPlane(LeptonP, dpt).Mag()/1000.;
//double phl = GetVectorInTPlane(HadronP, dpt).Mag()/1000.;
double R = ma + pmul + phl - el - eh;
double dpl = 0.5*R - (map*map + dptMag*dptMag)/(2*R);
//double dpl = ((R*R)-(dptMag*dptMag)-(map*map))/(2*R); // as in in PhysRevC.95.065501 - gives same result
double pn_reco = sqrt((dptMag*dptMag) + (dpl*dpl));
//std::cout << "Diagnostics: " << std::endl;
//std::cout << "mn: " << mn << std::endl;
//std::cout << "ma: " << ma << std::endl;
//std::cout << "map: " << map << std::endl;
//std::cout << "pmu: " << LeptonP.Mag()/1000. << std::endl;
//std::cout << "ph: " << HadronP.Mag()/1000. << std::endl;
//std::cout << "pmul: " << pmul << std::endl;
//std::cout << "phl: " << phl << std::endl;
//std::cout << "el: " << el << std::endl;
//std::cout << "eh: " << eh << std::endl;
//std::cout << "R: " << R << std::endl;
//std::cout << "dptMag: " << dptMag << std::endl;
//std::cout << "dpl: " << dpl << std::endl;
//std::cout << "pn_reco: " << pn_reco << std::endl;
return pn_reco;
}
+double FitUtils::Get_pn_reco_Ar(FitEvent *event, int ISPDG, bool Is0pi) {
+
+ const double mn = PhysConst::mass_neutron; // neutron mass
+ const double mp = PhysConst::mass_proton; // proton mass
+
+ // Check that the neutrino exists
+ if (event->NumISParticle(ISPDG) == 0) {
+ return -9999;
+ }
+ // Return 0 if the proton or muon are missing
+ if (event->NumFSParticle(2212) == 0 ||
+ event->NumFSParticle(ISPDG + ((ISPDG < 0) ? 1 : -1)) == 0) {
+ return -9999;
+ }
+
+ // Now get the TVector3s for each particle
+ TVector3 const &NuP = event->GetHMISParticle(14)->fP.Vect();
+ TVector3 const &LeptonP =
+ event->GetHMFSParticle(ISPDG + ((ISPDG < 0) ? 1 : -1))->fP.Vect();
+
+ // Find the highest momentum proton in the event between 450 and 1200 MeV with theta_p < 70
+ TLorentzVector Pnu = event->GetNeutrinoIn()->fP;
+ int HMFSProton = 0;
+ double HighestMomentum = 0.0;
+ // Get the stack of protons
+ std::vector Protons = event->GetAllFSProton();
+ for (size_t i = 0; i < Protons.size(); ++i) {
+ // Update the highest momentum particle
+ if (Protons[i]->p() > 450 &&
+ Protons[i]->p() < 1200 &&
+ Protons[i]->P3().Angle(Pnu.Vect()) < (M_PI/180.0)*70.0 &&
+ Protons[i]->p() > HighestMomentum) {
+ HighestMomentum = Protons[i]->p();
+ HMFSProton = i;
+ }
+ }
+ // Now get the proton
+ TLorentzVector Pprot = Protons[HMFSProton]->fP;
+ // Get highest momentum proton in allowed proton range
+ TVector3 HadronP = Pprot.Vect();
+ //TVector3 HadronP = event->GetHMFSParticle(2212)->fP.Vect();
+
+ double const el = event->GetHMFSParticle(ISPDG + ((ISPDG < 0) ? 1 : -1))->E()/1000.;
+ double const eh = Pprot.E()/1000.;
+
+ if (!Is0pi) {
+ if (event->NumFSParticle(PhysConst::pdg_pions) == 0) {
+ return -9999;
+ }
+ TLorentzVector pp = event->GetHMFSParticle(PhysConst::pdg_pions)->fP;
+ HadronP += pp.Vect();
+ }
+ TVector3 dpt = GetDeltaPT(LeptonP, HadronP, NuP);
+ double dptMag = dpt.Mag()/1000.;
+
+ //double ma = 6*mn + 6*mp - 0.09216; // target mass (E is from PhysRevC.95.065501)
+ //double map = ma - mn + 0.02713; // remnant mass
+ double ma = 6*mn + 6*mp - 0.34381; // target mass (E is from PhysRevC.95.065501)
+ double map = ma - mn + 0.02713; // remnant mass
+
+ double pmul = LeptonP.Dot(NuP.Unit())/1000.;
+ double phl = HadronP.Dot(NuP.Unit())/1000.;
+
+ //double pmul = GetVectorInTPlane(LeptonP, dpt).Mag()/1000.;
+ //double phl = GetVectorInTPlane(HadronP, dpt).Mag()/1000.;
+
+ double R = ma + pmul + phl - el - eh;
+
+ double dpl = 0.5*R - (map*map + dptMag*dptMag)/(2*R);
+ //double dpl = ((R*R)-(dptMag*dptMag)-(map*map))/(2*R); // as in in PhysRevC.95.065501 - gives same result
+
+ double pn_reco = sqrt((dptMag*dptMag) + (dpl*dpl));
+
+ //std::cout << "Diagnostics: " << std::endl;
+ //std::cout << "mn: " << mn << std::endl;
+ //std::cout << "ma: " << ma << std::endl;
+ //std::cout << "map: " << map << std::endl;
+ //std::cout << "pmu: " << LeptonP.Mag()/1000. << std::endl;
+ //std::cout << "ph: " << HadronP.Mag()/1000. << std::endl;
+ //std::cout << "pmul: " << pmul << std::endl;
+ //std::cout << "phl: " << phl << std::endl;
+ //std::cout << "el: " << el << std::endl;
+ //std::cout << "eh: " << eh << std::endl;
+ //std::cout << "R: " << R << std::endl;
+ //std::cout << "dptMag: " << dptMag << std::endl;
+ //std::cout << "dpl: " << dpl << std::endl;
+ //std::cout << "pn_reco: " << pn_reco << std::endl;
+
+ return pn_reco;
+}
+
// Get Cos theta with Adler angles
double FitUtils::CosThAdler(TLorentzVector Pnu, TLorentzVector Pmu, TLorentzVector Ppi, TLorentzVector Pprot) {
// Get the "resonance" lorentz vector (pion proton system)
TLorentzVector Pres = Pprot + Ppi;
// Boost the particles into the resonance rest frame so we can define the x,y,z axis
Pnu.Boost(Pres.BoostVector());
Pmu.Boost(-Pres.BoostVector());
Ppi.Boost(-Pres.BoostVector());
// The z-axis is defined as the axis of three-momentum transfer, \vec{k}
// Also unit normalise the axis
TVector3 zAxis = (Pnu.Vect()-Pmu.Vect())*(1.0/((Pnu.Vect()-Pmu.Vect()).Mag()));
// Then the angle between the pion in the "resonance" rest-frame and the z-axis is the theta Adler angle
double costhAdler = cos(Ppi.Vect().Angle(zAxis));
return costhAdler;
}
// Get phi with Adler angles, a bit more complicated...
double FitUtils::PhiAdler(TLorentzVector Pnu, TLorentzVector Pmu, TLorentzVector Ppi, TLorentzVector Pprot) {
// Get the "resonance" lorentz vector (pion proton system)
TLorentzVector Pres = Pprot + Ppi;
// Boost the particles into the resonance rest frame so we can define the x,y,z axis
Pnu.Boost(Pres.BoostVector());
Pmu.Boost(-Pres.BoostVector());
Ppi.Boost(-Pres.BoostVector());
// The z-axis is defined as the axis of three-momentum transfer, \vec{k}
// Also unit normalise the axis
TVector3 zAxis = (Pnu.Vect()-Pmu.Vect())*(1.0/((Pnu.Vect()-Pmu.Vect()).Mag()));
// The y-axis is then defined perpendicular to z and muon momentum in the resonance frame
TVector3 yAxis = Pnu.Vect().Cross(Pmu.Vect());
yAxis *= 1.0/double(yAxis.Mag());
// And the x-axis is then simply perpendicular to z and x
TVector3 xAxis = yAxis.Cross(zAxis);
xAxis *= 1.0/double(xAxis.Mag());
double x = Ppi.Vect().Dot(xAxis);
double y = Ppi.Vect().Dot(yAxis);
//double z = Ppi.Vect().Dot(zAxis);
double newphi = atan2(y, x)*(180./M_PI);
// Convert negative angles to positive
if (newphi < 0.0) newphi += 360.0;
// Old silly method before atan2
/*
// Then finally construct phi as the angle between pion projection and x axis
// Get the project of the pion momentum on to the zaxis
TVector3 PiVectZ = zAxis*Ppi.Vect().Dot(zAxis);
// The subtract the projection off the pion vector to get to get the plane
TVector3 PiPlane = Ppi.Vect() - PiVectZ;
double phi = -999.99;
if (PiPlane.Y() > 0) {
phi = (180./M_PI)*PiPlane.Angle(xAxis);
} else if (PiPlane.Y() < 0) {
phi = (180./M_PI)*(2*M_PI-PiPlane.Angle(xAxis));
} else if (PiPlane.Y() == 0) {
TRandom3 rand;
double randNo = rand.Rndm();
if (randNo > 0.5) {
phi = (180./M_PI)*PiPlane.Angle(xAxis);
} else {
phi = (180./M_PI)*(2*M_PI-PiPlane.Angle(xAxis));
}
}
*/
return newphi;
}
//********************************************************************
double FitUtils::ppInfK(TLorentzVector pmu, double costh, double binding,
bool neutrino) {
//********************************************************************
// Convert all values to GeV
//const double V = binding / 1000.; // binding potential
//const double mn = PhysConst::mass_neutron; // neutron mass
const double mp = PhysConst::mass_proton; // proton mass
double el = pmu.E() / 1000.;
//double pl = (pmu.Vect().Mag()) / 1000.; // momentum of lepton
double enu = EnuQErec(pmu, costh, binding, neutrino);
double ep_inf = enu - el + mp;
double pp_inf = sqrt(ep_inf * ep_inf - mp * mp);
return pp_inf;
};
//********************************************************************
TVector3 FitUtils::tppInfK(TLorentzVector pmu, double costh, double binding,
bool neutrino) {
//********************************************************************
// Convert all values to GeV
//const double V = binding / 1000.; // binding potential
//const double mn = PhysConst::mass_neutron; // neutron mass
//const double mp = PhysConst::mass_proton; // proton mass
double pl_x = pmu.X() / 1000.;
double pl_y = pmu.Y() / 1000.;
double pl_z= pmu.Z() / 1000.;
double enu = EnuQErec(pmu, costh, binding, neutrino);
TVector3 tpp_inf(-pl_x, -pl_y, -pl_z+enu);
return tpp_inf;
};
//********************************************************************
double FitUtils::cthpInfK(TLorentzVector pmu, double costh, double binding,
bool neutrino) {
//********************************************************************
// Convert all values to GeV
//const double V = binding / 1000.; // binding potential
//const double mn = PhysConst::mass_neutron; // neutron mass
const double mp = PhysConst::mass_proton; // proton mass
double el = pmu.E() / 1000.;
double pl = (pmu.Vect().Mag()) / 1000.; // momentum of lepton
double enu = EnuQErec(pmu, costh, binding, neutrino);
double ep_inf = enu - el + mp;
double pp_inf = sqrt(ep_inf * ep_inf - mp * mp);
double cth_inf = (enu*enu + pp_inf*pp_inf - pl*pl)/(2*enu*pp_inf);
return cth_inf;
};