Elegent::ExpModel Class Reference

Exponential model of p-p and p-anti p elastic scattering. More...

#include <ExpModel.h>

Inheritance diagram for Elegent::ExpModel:

Public Member Functions
void	Configure ()
virtual void	Init ()
	sets up model parameters and data members
virtual void	Print () const
	prints model info
virtual TComplex	Amp (double t) const
	Amplitude in t-space. More...
virtual TComplex	Prf (double b) const
	Profile function (amplitude in b-space). More...
Public Member Functions inherited from Elegent::Model
std::string	CompileFullLabel () const
	compiles a human readable string from fullLabel
std::string	CompileShortLabel () const
	compiles a human readable string from shortLabel
virtual void	ForcePresampling (bool)
	Sets the presampling option, if available. More...

Public Attributes
double	a
double	b1
double	b2
double	p0
double	p1
Public Attributes inherited from Elegent::Model
Label	fullLabel
	full label (e.g. for figure legend)
Label	shortLabel
	short label (e.g. for object names in ROOT files)

Detailed Description

Exponential model of p-p and p-anti p elastic scattering.

amplitude(t) = a * exp( b1*t + b2*t*t + i*(p0 + p1*t) ) For reference pourposes only.

Member Function Documentation

TComplex ExpModel::Amp ( double  t ) const

virtual

Amplitude in t-space.

Normalisation is such that \( dsigma/dt = (\hbar c)^2 * \pi / (s p^2) * |Amp(t)|^2 \) Differential cross-section can be obtained as Constants::sig_fac * |Amp(t)|^2

Parameters

t	in GeV^-2, t < 0

Implements Elegent::Model.

TComplex ExpModel::Prf ( double  b ) const

virtual

Profile function (amplitude in b-space).

Normalisation is such that \( Amp(t) = 2 p \sqrt{s} \int db b Prf() J_0(b \sqrt{-t}) \)

Parameters

b

in fm.

Implements Elegent::Model.

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

• src/libElegent/interface/ExpModel.h
• src/libElegent/src/ExpModel.cc