lhef::BranchingRatios Class Reference

#include <BranchingRatios.h>

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

Detailed Description

Definition at line 13 of file BranchingRatios.h.

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.

{}

Member Function Documentation

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

private

Definition at line 38 of file BranchingRatios.cc.

References cache, pos, and lhef::Hadronisation::totalBranchingRatio().

Referenced by Options.Options::__getitem__(), betterConfigParser.BetterConfigParser::__updateDict(), betterConfigParser.BetterConfigParser::getCompares(), betterConfigParser.BetterConfigParser::getGeneral(), and betterConfigParser.BetterConfigParser::getResultingSection().

{
    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, benchmark_cfg::pdgId, and relativeConstraints::value.

Referenced by betterConfigParser.BetterConfigParser::getGeneral(), and LHEProducer::LHEProducer().

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

Member Data Documentation

std::map<int, double> lhef::BranchingRatios::cache

mutableprivate

Definition at line 27 of file BranchingRatios.h.

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