/usr/include/Rivet/Projections/UnstableFinalState.hh is in librivet-dev 1.8.3-1.1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 | // -*- C++ -*-
#ifndef RIVET_UnstableFinalState_HH
#define RIVET_UnstableFinalState_HH
#include "Rivet/Projections/FinalState.hh"
#include "Rivet/Particle.hh"
#include "Rivet/Event.hh"
namespace Rivet {
/// @brief Project out all physical-but-decayed particles in an event.
///
/// The particles returned by the UFS are unique unstable particles, such as
/// hadrons which are decayed by the generator. If, for example, you set Ks
/// and Lambda particles stable in the generator, they will not be returned by
/// the UFS. Also, you should be aware that all unstable particles in a decay
/// chain are returned: if you are looking for something like the number of B
/// hadrons in an event and there is a decay chain from e.g. B** -> B, you
/// will count both B mesons unless you are careful to check for
/// ancestor/descendent relations between the particles. Duplicate particles
/// in the event record, i.e. those which differ only in bookkeeping details
/// or photon emissions, are stripped from the returned particles collection.
class UnstableFinalState : public FinalState {
public:
/// @name Standard constructors and destructors.
//@{
/// The default constructor. May specify the minimum and maximum
/// pseudorapidity \f$ \eta \f$ and the min \f$ p_T \f$ (in GeV).
UnstableFinalState(double mineta = -MAXRAPIDITY,
double maxeta = MAXRAPIDITY,
double minpt = 0.0*GeV)
: FinalState(mineta,maxeta,minpt)
{
setName("UnstableFinalState");
}
/// Clone on the heap.
virtual const Projection* clone() const {
return new UnstableFinalState(*this);
}
//@}
protected:
/// Apply the projection to the event.
virtual void project(const Event& e);
};
}
#endif
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