BOSS 8.0.0
BESIII Offline Software System
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EvtPropBreitWigner.cc
Go to the documentation of this file.
1#include "EvtPatches.hh"
2/*******************************************************************************
3 * Project: BaBar detector at the SLAC PEP-II B-factory
4 * Package: EvtGenBase
5 * File: $Id: EvtPropBreitWigner.cc,v 1.1.1.2 2007/10/26 05:03:14 pingrg Exp $
6 * Author: Alexei Dvoretskii, dvoretsk@slac.stanford.edu, 2001-2002
7 *
8 * Copyright (C) 2002 Caltech
9 *******************************************************************************/
10
11#include "EvtConst.hh"
12#include "EvtPropBreitWigner.hh"
13#include <math.h>
14
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21
25
27 double m = x.value();
28 EvtComplex value = sqrt( _g0 / EvtConst::twoPi ) / ( m - _m0 - EvtComplex( 0.0, _g0 / 2. ) );
29 return value;
30}
static const double twoPi
Definition EvtConst.hh:28
EvtPropBreitWigner(double m0, double g0)
EvtComplex amplitude(const EvtPoint1D &m) const
EvtAmplitude< EvtPoint1D > * clone() const
double g0() const
double m0() const
EvtPropagator(double m0, double g0)