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lhef::BranchingRatios Class Reference

#include <GeneratorInterface/LHEInterface/interface/BranchingRatios.h>

List of all members.

Public Member Functions
	BranchingRatios ()
double	getFactor (const Hadronisation *hadronisation, const boost::shared_ptr< LHEEvent > &event) const
void	reset ()
void	set (int pdgId, bool both=true, double value=1.0)
	~BranchingRatios ()
Private Member Functions
double	get (int pdgId, const Hadronisation *hadronisation) const
Private Attributes
std::map< int, double >	cache

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Detailed Description

Definition at line 13 of file BranchingRatios.h.

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Constructor & Destructor Documentation

lhef::BranchingRatios::BranchingRatios

(

)

[inline]

Definition at line 15 of file BranchingRatios.h.

{}

lhef::BranchingRatios::~BranchingRatios

(

)

[inline]

Definition at line 16 of file BranchingRatios.h.

{}

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Member Function Documentation

double lhef::BranchingRatios::get	(	int	pdgId,
		const Hadronisation *	hadronisation
	)			const [private]

Definition at line 38 of file BranchingRatios.cc.

References cache, lat::endl(), and lhef::Hadronisation::totalBranchingRatio().

{
        std::map<int, double>::const_iterator pos = cache.find(pdgId);
        if (pos == cache.end()) {
                double val = hadronisation->totalBranchingRatio(pdgId);
                if (val <= 0.0)
                        val = 1.0;
                if (val < 0.99)
                        edm::LogInfo("Generator|LHEInterface")
                                << "Particle with pdgId " << pdgId
                                << " only partly decayed in hadronizer, "
                                   "reducing respective event cross-section "
                                   "contribution with a factor of "
                                << val << "." << std::endl;

                cache.insert(std::make_pair(pdgId, val));
                return val;
        } else
                return pos->second;
}

double lhef::BranchingRatios::getFactor	(	const Hadronisation *	hadronisation,
		const boost::shared_ptr< LHEEvent > &	event
	)			const

Definition at line 25 of file BranchingRatios.cc.

References i, lhef::HEPEUP::IDUP, lhef::HEPEUP::ISTUP, and lhef::HEPEUP::NUP.

Referenced by LHEProducer::filter().

{
        double factor = 1.0;
        const HEPEUP *hepeup = event->getHEPEUP();
        for(int i = 0; i < hepeup->NUP; i++) {
                if (hepeup->ISTUP[i] == 1)
                        factor *= get(hepeup->IDUP[i], hadronisation);
        }
        return factor;
}

void lhef::BranchingRatios::reset

(

void

)

Definition at line 13 of file BranchingRatios.cc.

References cache.

{
        cache.clear();
}

void lhef::BranchingRatios::set	(	int	pdgId,
		bool	both = true,
		double	value = 1.0
	)

Definition at line 18 of file BranchingRatios.cc.

References cache.

Referenced by LHEProducer::LHEProducer().

{
        cache[pdgId] = value;
        if (both)
                cache[-pdgId] = value;
}

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Member Data Documentation

std::map<int, double> lhef::BranchingRatios::cache [mutable, private]

Definition at line 27 of file BranchingRatios.h.

Referenced by get(), reset(), and set().

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The documentation for this class was generated from the following files:

• GeneratorInterface/LHEInterface/interface/BranchingRatios.h
• GeneratorInterface/LHEInterface/src/BranchingRatios.cc

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