EvtMBreitWigner Class Reference

#include <EvtMBreitWigner.hh>

Inheritance diagram for EvtMBreitWigner:

List of all members.

Public Member Functions
	EvtMBreitWigner (const EvtId &id, const vector< string > &args)
	~EvtMBreitWigner ()
EvtComplex	shape (const vector< EvtVector4R > &product) const
EvtMLineShape *	duplicate () const
void	setres (EvtMRes *n)
Protected Attributes
EvtMRes *	_node
Private Attributes
EvtId	_id
double	_width
double	_resmass

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Detailed Description

Definition at line 6 of file EvtMBreitWigner.hh.

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Constructor & Destructor Documentation

EvtMBreitWigner::EvtMBreitWigner	(	const EvtId &	id,
		const vector< string > &	args
	)

Definition at line 7 of file EvtMBreitWigner.cc.

References _id, _resmass, _width, calibUtil::ERROR, EvtPDL::getMeanMass(), EvtPDL::getWidth(), and report().

Referenced by duplicate().

{
    if( args.size() != 0 ) {
        report(ERROR, "EvtGen")<<"Unknown input arguments passed in to lineshape."<<endl;
        ::abort();
    }

    _id = id;
    _width = EvtPDL::getWidth( id );
    _resmass = EvtPDL::getMeanMass( id );
}

EvtMBreitWigner::~EvtMBreitWigner

(

)

[inline]

Definition at line 10 of file EvtMBreitWigner.hh.

{};

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Member Function Documentation

EvtMLineShape * EvtMBreitWigner::duplicate

(

)

const [virtual]

Implements EvtMLineShape.

Definition at line 28 of file EvtMBreitWigner.cc.

References _id, and EvtMBreitWigner().

{
  vector<string> args;
  EvtMLineShape* tmp=new EvtMBreitWigner( _id, args );
  return tmp;
}

void EvtMLineShape::setres

(

EvtMRes *

n

)

[inline, inherited]

Definition at line 14 of file EvtMRes.hh.

References EvtMLineShape::_node.

Referenced by EvtMHelAmp::duplicate(), and EvtMTree::makeresonance().

{ _node = n; }

EvtComplex EvtMBreitWigner::shape

(

const vector< EvtVector4R > &

product

)

const [virtual]

Implements EvtMLineShape.

Definition at line 19 of file EvtMBreitWigner.cc.

References EvtMLineShape::_node, _resmass, _width, EvtMNode::get4vector(), I, EvtVector4R::mass(), mass, and EvtConst::twoPi.

{
    static EvtComplex I(0.0, 1.0);
    double mass = _node->get4vector(product).mass();
 
    return sqrt(_width/( EvtConst::twoPi )) * 1/( mass - _resmass - I * _width/2 );
}

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Member Data Documentation

EvtId EvtMBreitWigner::_id [private]

Definition at line 17 of file EvtMBreitWigner.hh.

Referenced by duplicate(), and EvtMBreitWigner().

EvtMRes* EvtMLineShape::_node [protected, inherited]

Definition at line 21 of file EvtMRes.hh.

Referenced by EvtMLineShape::setres(), and shape().

double EvtMBreitWigner::_resmass [private]

Definition at line 19 of file EvtMBreitWigner.hh.

Referenced by EvtMBreitWigner(), and shape().

double EvtMBreitWigner::_width [private]

Definition at line 19 of file EvtMBreitWigner.hh.

Referenced by EvtMBreitWigner(), and shape().

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