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diff --git a/src/Reweight/weightRPA.h b/src/Reweight/weightRPA.h
index ca8e635..30de03c 100644
--- a/src/Reweight/weightRPA.h
+++ b/src/Reweight/weightRPA.h
@@ -1,419 +1,417 @@
#ifndef weightRPA_h
#define weightRPA_h
#include <fstream> //ifstream
#include <iostream> //cout
#include <TString.h>
#include <TH2D.h>
#include <TH1D.h>
#include <TFile.h>
#include "math.h"
#include "assert.h"
//For Compatibility with ROOT compiler
//uncomment the following:
//#define ROOT
/*!
* Code example to extract the RPA effect central weight
* and its uncertainties from the prepared files.
* Heidi Schellman (Oregon State) and Rik Gran (Minnesota Duluth)
* for use in MINERvA experiment analysis
* must compile with the ROOT libraries
* g++ `root-config --glibs --cflags` -O3 weightRPAtest.cxx -o weightRPA
* The underlying model is from the IFIC Valencia group
* see (public) minerva docdb:12688 for the full physics discussion
*/
// NOTE UNITS ARE GEV in the calculation
// make sure you convert MeV to GeV before calling these functions
// Class for getting RPA paramaters inputs from a given file
// Includes methods that return all five RPA weights at once
// (is the most cpu efficient way to get them)
// Or return just the central value
// (skipping the uncertainties code completely if only cv wanted)
// Or return each CV and uncertainty one at a time
// (is the least cpu efficient, repeats some calculations 5 times)
class weightRPA {
public:
//Constructor: Read in params from a filename
weightRPA(const TString f) { read(f); } //Read in params from file
TString filename;
TFile* fRPAratio;
TH2D *hRPArelratio;
TH2D *hRPAnonrelratio;
TH1D *hQ2relratio;
TH1D *hQ2nonrelratio;
TArrayD *TADrpapolyrel;
Double_t *rpapolyrel ;
TArrayD *TADrpapolynonrel;
Double_t *rpapolynonrel;
static const int CENTRAL=0;
static const int LOWQ2 = 1;
static const int HIGHQ2 = 2;
// true to take from histogram, false use parameterization
static const bool Q2histORparam = true;
// MINERvA holds kinematics in MeV, but all these functions require GeV
// So make sure you pass them in GeV.
inline double getWeight(const double mc_q0, const double mc_q3, double * weights); //in GeV
inline double getWeight(const double mc_q0, const double mc_q3); //in GeV
inline double getWeight(const double mc_q0, const double mc_q3, int type, int sign); //in GeV
inline double getWeight(const double Q2); //in GeV^2
inline double getWeightLowQ2(const double mc_q0, const double mc_q3, const int sign);
inline double getWeightHighQ2(const double mc_q0, const double mc_q3, const int sign);
inline double getWeightQ2(const double mc_Q2, const bool relORnonrel=true);
//Initializer
inline void read(const TString f);
// q0 and q3 in GeV, type = 1 for low Q2, 2 for high Q2, 0 for central
//double getWeightInternal(const double mc_q0, const double mc_q3,int type, int sign);
private:
inline double getWeightInternal(const double mc_Q2);
inline double getWeightInternal(const double mc_q0, const double mc_q3, const int type, const int sign);
inline double getWeightInternal(const double mc_q0, const double mc_q3, double *weights=0);
inline double getWeightQ2parameterization(const double mc_Q2, const bool relORnonrel);
inline double getWeightQ2fromhistogram(const double mc_Q2, const bool relORnonrel);
};
void weightRPA::read(const TString f)
//Read in the params doubles from a file
//argument: valid filename
{
fRPAratio = TFile::Open(f,"READONLY");
if (fRPAratio){
hRPArelratio = (TH2D*)fRPAratio->Get("hrelratio");
hRPAnonrelratio = (TH2D*)fRPAratio->Get("hnonrelratio");
hQ2relratio = (TH1D*)fRPAratio->Get("hQ2relratio");
hQ2nonrelratio = (TH1D*)fRPAratio->Get("hQ2nonrelratio");
TADrpapolyrel = (TArrayD*)fRPAratio->Get("rpapolyrel");
rpapolyrel = TADrpapolyrel->GetArray();
TADrpapolynonrel = (TArrayD*)fRPAratio->Get("rpapolynonrel");
rpapolynonrel = TADrpapolynonrel->GetArray();
hRPArelratio->Print();
std::cout << "have read in ratios from file " << f <<std::endl;
} else {
//File could not be read
std::cout << "File could not be read" << std::endl;
}
}
double weightRPA::getWeightInternal(const double mc_q0, const double mc_q3, double *weights){
assert(hRPArelratio);
if (weights != 0){
for (int i = 0; i < 5; i++){
weights[i] = 1.0;
}
}
// the construction here is that the histogram bins
// line up in mev-sized steps e.g. from 0.018 to 0.019
// and the value stored is the value at bin-center.
// double gevmev = 0.001 ;
const Double_t gevlimit = 3.; // upper limit for 2d
Int_t rpamevlimit = gevlimit*1000.;
//Double_t Q2gev = mc_Q2*gevmev*gevmev;
Double_t Q2gev = mc_q3*mc_q3-mc_q0*mc_q0;
Int_t q3bin = Int_t(mc_q3*1000.);
Int_t q0bin = Int_t(mc_q0*1000.);
if(mc_q0 >= gevlimit) q0bin = rpamevlimit - 1;
if(mc_q3 >= gevlimit) q3bin = rpamevlimit - 1;
// Nieves does not calculate anything below binding energy.
// I don't know what GENIE does, but lets be soft about this.
// Two things lurking here at once.
// One, we are taking out a 10 MeV offset between GENIE and Valencia.
// Second, we are protecting against being asked for a weight that is too low in q0.
// It actually shouldn't happen for real GENIE events,
// but this protection does something that doesn't suck, just in case.
// you would see the artifact in a plot for sure, but better than writing 1.0.
// CWret after talking to Rik in Nov 2018 at MINERvA CM
// 2.12.8 sets this to 27 because change of Q definition: need to offset GENIE and Nieves Eb even more
#if __GENIE_VERSION__ >= 210
Int_t q0offsetValenciaGENIE = 27;
#else
Int_t q0offsetValenciaGENIE = 10;
#endif
- std::cout << "q0offsetValenciaGENIE: " << q0offsetValenciaGENIE << std::endl;
-
if(mc_q0 < 0.018) q0bin = 18+q0offsetValenciaGENIE;
Double_t thisrwtemp = hRPArelratio->GetBinContent(q3bin,q0bin-q0offsetValenciaGENIE);
// now trap bogus entries. Not sure why they happen, but set to 1.0 not 0.0
if(thisrwtemp <= 0.001)thisrwtemp = 1.0;
// events in genie but not in valencia should get a weight
// related to a similar q0 from the bulk distribution.
if(mc_q0 < 0.15 && thisrwtemp > 0.9){
thisrwtemp = hRPArelratio->GetBinContent(q3bin+150, q0bin-q0offsetValenciaGENIE);
}
//Double_t *mypoly;
//mypoly = rpapoly;
if(Q2gev >= 9.0){
thisrwtemp = 1.0;
}
else if(Q2gev > 3.0) {
// hiding option, use the Q2 parameterization everywhere
// } else if(Q2gev > 3.0 || rwRPAQ2) {
// turn rwRPAQ2 all the way on to override the 2D histogram
// illustrates the old-style Q2 suppression many folks still use.
thisrwtemp = getWeightQ2(Q2gev,true);
// double powerQ2 = 1.0;
//thisrwtemp = 0.0;
//for(int ii=0; ii<10; ii++){
// thisrwtemp += rpapoly[ii]*powerQ2;
// powerQ2 *= Q2gev;
//}
//std::cout << "test temp " << thisrwtemp << " " << rpamypoly[2] << std::endl;
}
if(!(thisrwtemp >= 0.001 && thisrwtemp <= 2.0))thisrwtemp = 1.0;
// hiding option, turn off the enhancement.
//if(rwoffSRC && thisrwtemp > 1.0)thisrwtemp = 1.0;
if (0 == weights) return thisrwtemp;
// if this was called without passing an array,
// the user didn't want us to calculate the +/- 1-sigma bounds
// so the above line returned before even trying.
weights[0] = thisrwtemp;
//if (type == 0) return thisrwtemp;
//if (type == 1) {
// Construct the error bands on the low Q2 suppression.
// Double_t thisrwSupP1 = 1.0;
// Double_t thisrwSupM1 = 1.0;
if( thisrwtemp < 1.0){
// make the suppression stronger or weaker to muon capture uncertainty
// rwRPAonesig is either +1 or -1, which is 0.25 (25%).
// possible to be re-written to produce 2 and 3 sigma.
weights[1] = thisrwtemp + 1.0 * (0.25)*(1.0 - thisrwtemp);
weights[2] = thisrwtemp - 1.0 * (0.25)*(1.0 - thisrwtemp);
}
else{
weights[1] = thisrwtemp;
weights[2] = thisrwtemp;
}
//std::cout << "check " << thisrwtemp << " " << weights[1] << " " << weights[2] << std::endl;
// Construct the rest of the error bands on the low Q2 suppression.
// this involves getting the weight from the non-relativistic ratio
//if (type == 2){
Double_t thisrwEnhP1 = 1.0;
Double_t thisrwEnhM1 = 1.0;
// make enhancement stronger or weaker to Federico Sanchez uncertainty
// this does NOT mean two sigma, its overloading the option.
Double_t thisrwextreme = hRPAnonrelratio->GetBinContent(q3bin,q0bin-q0offsetValenciaGENIE);
// now trap bogus entries. Not sure why they happen, but set to 1.0 not 0.0
if(thisrwextreme <= 0.001)thisrwextreme = 1.0;
if(mc_q0 < 0.15 && thisrwextreme > 0.9){
thisrwextreme = hRPAnonrelratio->GetBinContent(q3bin+150, q0bin-q0offsetValenciaGENIE);
}
//std::cout << "ext " << thisrwextreme << " " << thisrwtemp << std::endl;
// get the same for the Q2 dependent thing,
// but from the nonrelativistic polynomial
if(Q2gev >= 9.0){
thisrwextreme = 1.0;
}
else if(Q2gev > 3.0 ) {
thisrwextreme = getWeightQ2(Q2gev,false);
//double powerQ2 = 1.0;
//thisrwextreme = 0.0;
//for(int ii=0; ii<10; ii++){
// thisrwextreme += rpapolynonrel[ii]*powerQ2;
// powerQ2 *= Q2gev;
//}
//std::cout << "test extreme " << thisrwextreme << " " << mypolynonrel[2] << std::endl;
}
if(!(thisrwextreme >= 0.001 && thisrwextreme <= 2.0))thisrwextreme = 1.0;
//std::cout << "test extreme " << Q2gev << " " << thisrwextreme << " " << thisrwtemp << std::endl;
Double_t RelToNonRel = 0.6;
// based on some distance between central value and extreme
thisrwEnhP1 = thisrwtemp + RelToNonRel * (thisrwextreme-thisrwtemp);
Double_t thisrwEnhP1max = thisrwextreme;
if(Q2gev < 0.9)thisrwEnhP1 += 1.5*(0.9 - Q2gev)*(thisrwEnhP1max - thisrwEnhP1);
// sanity check, don't let the upper error bound go above the nonrel limit.
if(thisrwEnhP1 > thisrwEnhP1max)thisrwEnhP1 = thisrwEnhP1max;
// don't let positive error bound be closer than 3% above the central value
// will happen at very high Q2 and very close to Q2 = 0
if(thisrwEnhP1 < thisrwtemp + 0.03)thisrwEnhP1 = thisrwtemp + 0.03;
thisrwEnhM1 = thisrwtemp - RelToNonRel * (thisrwextreme-thisrwtemp);
// don't let negative error bound be closer than 3% below the central value
if(thisrwEnhM1 > thisrwtemp - 0.03)thisrwEnhM1 = thisrwtemp - 0.03;
// even still, don't let the lower error bound go below 1.0 at high-ish Q2
if(Q2gev > 1.0 && thisrwEnhM1 < 1.0)thisrwEnhM1 = 1.0;
// whew. so now return the main weight
// and return the array of all five weights in some array
// thisrwtemp, thisrwSupP1, thisrwSupM1, thisrwEnhP1, thisrwEnhM1
//if (sign == 1) return thisrwEnhP1;
//if (sign == -1) return thisrwEnhM1;
weights[3] = thisrwEnhP1;
weights[4] = thisrwEnhM1;
// still return the central value
return thisrwtemp;
}
double weightRPA::getWeight(const double mc_q0, const double mc_q3){
return getWeightInternal(mc_q0, mc_q3);
}
double weightRPA::getWeight(const double mc_q0, const double mc_q3, double *weights){
return getWeightInternal(mc_q0, mc_q3, weights);
}
double weightRPA::getWeight(const double mc_q0, const double mc_q3, int type, int sign){
return getWeightInternal(mc_q0, mc_q3, type, sign);
}
double weightRPA::getWeight(const double mc_Q2){
return getWeightQ2(mc_Q2);
}
double weightRPA::getWeightInternal(const double mc_q0, const double mc_q3, int type, int sign){
double weights[5] = {1., 1., 1., 1., 1.};
double cv = getWeightInternal(mc_q0, mc_q3, weights);
if(type==0)return cv;
else if(type==weightRPA::LOWQ2 && sign == 1)return weights[1];
else if(type==weightRPA::LOWQ2 && sign == -1)return weights[2];
else if(type==weightRPA::HIGHQ2 && sign == 1)return weights[3];
else if(type==weightRPA::HIGHQ2 && sign == -1)return weights[4];
//else {
// // should never happen? Bork ?
// return cv; //?
//}
return cv;
}
double weightRPA::getWeightQ2(const double mc_Q2, const bool relORnonrel){
if(mc_Q2 < 0.0)return 1.0; // this is Q2 actually, not sure hw
if(mc_Q2 > 9.0)return 1.0;
// this function needs to know two options.
// does user want rel (cv) or nonrel
// does user want to use the histogram or parameterization
if(Q2histORparam)return getWeightQ2fromhistogram(mc_Q2, relORnonrel);
else return getWeightQ2parameterization(mc_Q2, relORnonrel);
}
double weightRPA::getWeightQ2parameterization(const double mc_Q2, const bool relORnonrel){
if(mc_Q2 < 0.0)return 1.0;
if(mc_Q2 > 9.0)return 1.0;
// this one returns just the polynomial Q2 version
// for special tests. Poor answer for baseline MINERvA QE events.
// No uncertainty assigned to this usecase at this time.
//double gevmev = 0.001; // minerva sends in MeV.
double Q2gev = mc_Q2;
double powerQ2 = 1.0;
double thisrwtemp = 0.0;
thisrwtemp = 0.0;
for(int ii=0; ii<10; ii++){
if(relORnonrel)thisrwtemp += rpapolyrel[ii]*powerQ2;
else thisrwtemp += rpapolynonrel[ii]*powerQ2;
powerQ2 *= Q2gev;
}
return thisrwtemp;
}
double weightRPA::getWeightQ2fromhistogram(const double mc_Q2, const bool relORnonrel){
if(mc_Q2 < 0.0)return 1.0;
if(mc_Q2 > 9.0) return 1.0;
if(relORnonrel)return hQ2relratio->GetBinContent( hQ2relratio->FindBin(mc_Q2) );
else return hQ2nonrelratio->GetBinContent( hQ2nonrelratio->FindBin(mc_Q2) );
// interpolation might be overkill for such a finely binned histogram, 0.01%
// but the extra cpu cycles maybe small.
// save it here for some future use.
//if(relORnonrel)return hQ2relratio->Interpolate(mc_Q2);
//else return hQ2nonrelratio->Interpolate(mc_Q2);
}
double weightRPA::getWeightLowQ2(const double mc_q0, const double mc_q3, int sign){
return getWeightInternal(mc_q0,mc_q3,weightRPA::LOWQ2,sign);
}
double weightRPA::getWeightHighQ2(const double mc_q0, const double mc_q3, int sign){
return getWeightInternal(mc_q0,mc_q3,weightRPA::HIGHQ2,sign);
}
#endif

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