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MergingReweight.h
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// -*- C++ -*-
//
// MergingReweight.h is a part of Herwig - A multi-purpose Monte Carlo event generator
// Copyright (C) 2002-2012 The Herwig Collaboration
//
// Herwig is licenced under version 2 of the GPL, see COPYING for details.
// Please respect the MCnet academic guidelines, see GUIDELINES for details.
//
#ifndef Herwig_MergingReweight_H
#define Herwig_MergingReweight_H
// This is the declaration of the MergingReweight class.
#include "ThePEG/MatrixElement/ReweightBase.h"
namespace Herwig {
using namespace ThePEG;
/**
* The MergingReweight class reweights subprocesses.
*
* @see ReweightBase
*
*/
class MergingReweight: public ReweightBase {
public:
/** @name Standard constructors and destructors. */
//@{
/**
* Default constructor.
*/
MergingReweight()
: HTPower(0),MaxPTPower(0), scale(50.0*GeV),onlyColoured(true) {}
//@}
public:
/**
* Return the wieght for the kinematical configuation provided by
* the assigned XComb object (in the LastXCombInfo base class).
*/
virtual double weight() const;
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);
//@}
/**
* Standard Init function used to initialize the interfaces.
*/
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;
//@}
private:
/**
* The weight is the minimum pt/scale to a \a power.
*/
double HTPower,MaxPTPower;
/**
* The weight is the minimum pt/\a scale to a power.
*/
Energy scale;
bool onlyColoured;
private:
/**
* Describe a concrete base class with persistent data.
*/
static ClassDescription<MergingReweight> initMergingReweight;
/**
* Private and non-existent assignment operator.
*/
MergingReweight & operator=(const MergingReweight &);
};
}
#endif /* Herwig_MergingReweight_H */

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