QtoQGammaSplitFn.cc
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QtoQGammaSplitFn.cc
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	// -- C++ --
	//
	// This is the implementation of the non-inlined, non-templated member
	// functions of the QtoQGammaSplitFun class.
	//

	#include "QtoQGammaSplitFn.h"

	using namespace Herwig;

	ClassDescription<QtoQGammaSplitFn> QtoQGammaSplitFn::initQtoQGammaSplitFn;

	QtoQGammaSplitFn::~QtoQGammaSplitFn() {}

	double QtoQGammaSplitFn::P(const double z, const Energy2 qtilde2,
	const IdList &) {
	return (1. + sqr(z))/(1.-z);
	}

	double QtoQGammaSplitFn::overestimateP(const double z, const IdList &) {
	return 2./(1.-z);
	}


	double QtoQGammaSplitFn::integOverP(const double z) {
	return -2.*log(1.-z);
	}


	double QtoQGammaSplitFn::invIntegOverP(const double r) {
	return 1. - exp(-r/2.);
	}



	void QtoQGammaSplitFn::colourConnection(const ShoColinePair &parent,
	ShoColinePair &first,
	ShoColinePair &second) {

	// Return immediately if the input is inconsistent.
	if((!parent.first && !parent.second) \|\| (parent.first && parent.second))
	return;

	// second should be Gamma, doesn't get colour, of course.
	first = parent;
	second = ShoColinePair();
	}