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MissingPtCut.h
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MissingPtCut.h
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// -*- C++ -*-
//
// MissingPtCut.h is a part of Herwig - A multi-purpose Monte Carlo event generator
// Copyright (C) 2002-2019 The Herwig Collaboration
//
// Herwig is licenced under version 3 of the GPL, see COPYING for details.
// Please respect the MCnet academic guidelines, see GUIDELINES for details.
//
#ifndef Herwig_MissingPtCut_H
#define Herwig_MissingPtCut_H
//
// This is the declaration of the MissingPtCut class.
//
#include "ThePEG/Cuts/MultiCutBase.h"
#include "ThePEG/PDT/MatcherBase.h"
namespace Herwig {
using namespace ThePEG;
/**
* \ingroup Matchbox
* \author Christian Reuschle
*
* \brief MissingPtCut implements a cut on the total missing transverse momentum of a set of outgoing particles, i.e. for now the total transverse momentum of all outgoing neutrinos in an event.
*
* @see \ref MissingPtCutInterfaces "The interfaces"
* defined for MissingPtCut.
*/
class MissingPtCut: public MultiCutBase {
public:
/**
* The default constructor.
*/
MissingPtCut();
public:
/** @name Virtual functions to be overridden by sub-classes. */
//@{
/**
* Return the minimum allowed value of the squared invariant mass of
* a set of outgoing partons of the given types. Typically used to
* cut off the tails of the mass of a resonance for efficiency.
*/
virtual Energy2 minS(const tcPDVector) const { return ZERO; }
/**
* Return the maximum allowed value of the squared invariant mass of
* a set of outgoing partons of the given types. Typically used to
* cut off the tails of the mass of a resonance for efficiency.
*/
virtual Energy2 maxS(const tcPDVector) const { return Constants::MaxEnergy2; }
/**
* Return true if a set of outgoing particles with type \a ptype
* and corresponding momenta \a p passes the cuts.
*/
virtual bool passCuts(tcCutsPtr parent, const tcPDVector & ptype,
const vector<LorentzMomentum> & p) const;
/**
* Describe the currently active cuts in the log file.
*/
virtual void describe() const;
/**
* Return the matcher for particles to cut on.
*/
Ptr<MatcherBase>::tptr matcher() const { return theMatcher; }
//@}
public:
/**
* Return the PDG codes of those particles that cannot be detected
*/
const vector<int>& invisibleParticles() const { return theInvisibleParticles; }
/**
* Command to insert the PDG code of a particle that cannot be detected
*/
string doInvisibleParticles(string);
/**
* Return the minimum missing pt.
*/
Energy ptMissMin() const { return thePtMissMin; }
/**
* Return the maximum missing pt.
*/
Energy ptMissMax() const { return thePtMissMax; }
public:
/** @name Functions used by the persistent I/O system. */
//@{
/**
* Function used to write out object persistently.
* @param os the persistent output stream written to.
*/
void persistentOutput(PersistentOStream & os) const;
/**
* Function used to read in object persistently.
* @param is the persistent input stream read from.
* @param version the version number of the object when written.
*/
void persistentInput(PersistentIStream & is, int version);
//@}
/**
* The standard Init function used to initialize the interfaces.
* Called exactly once for each class by the class description system
* before the main function starts or
* when this class is dynamically loaded.
*/
static void Init();
protected:
/** @name Clone Methods. */
//@{
/**
* Make a simple clone of this object.
* @return a pointer to the new object.
*/
virtual IBPtr clone() const;
/** Make a clone of this object, possibly modifying the cloned object
* to make it sane.
* @return a pointer to the new object.
*/
virtual IBPtr fullclone() const;
//@}
// If needed, insert declarations of virtual function defined in the
// InterfacedBase class here (using ThePEG-interfaced-decl in Emacs).
private:
/**
* The PDG codes of those particles that cannot be detected
*/
vector<int> theInvisibleParticles;
/**
* The minimum missing pt.
*/
Energy thePtMissMin;
/**
* The maximum missing pt.
*/
Energy thePtMissMax;
/**
* A matcher for particles to cut on.
*/
Ptr<MatcherBase>::ptr theMatcher;
private:
/**
* The assignment operator is private and must never be called.
* In fact, it should not even be implemented.
*/
MissingPtCut & operator=(const MissingPtCut &) = delete;
};
}
#endif /* Herwig_MissingPtCut_H */

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