Elegent::Model Class Reference

The base class for hadronic models of (anti)proton-proton elastic scattering. More...

#include <Model.h>

Inheritance diagram for Elegent::Model:

Classes
struct	Label
	collection of strings that describe a model instance More...

Public Member Functions
std::string	CompileFullLabel () const
	compiles a human readable string from fullLabel
std::string	CompileShortLabel () const
	compiles a human readable string from shortLabel
virtual void	Init ()=0
	sets up model parameters and data members
virtual void	Print () const =0
	prints model info
virtual TComplex	Amp (double t) const =0
	Amplitude in t-space. More...
virtual TComplex	Prf (double b) const =0
	Profile function (amplitude in b-space). More...
virtual void	ForcePresampling (bool)
	Sets the presampling option, if available. More...

Public Attributes
Label	fullLabel
	full label (e.g. for figure legend)
Label	shortLabel
	short label (e.g. for object names in ROOT files)

Detailed Description

The base class for hadronic models of (anti)proton-proton elastic scattering.

Member Function Documentation

virtual TComplex Elegent::Model::Amp ( double  t ) const

pure 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

Implemented in Elegent::BSWModel, Elegent::IslamModel, Elegent::InterpolationModel, Elegent::PPPModel, Elegent::GodizovModel, Elegent::DLModel, Elegent::JenkovszkyModel, Elegent::BHModel, Elegent::FerreiraModel, and Elegent::ExpModel.

virtual void Elegent::Model::ForcePresampling ( bool  )

inlinevirtual

Sets the presampling option, if available.

This option determines whether calling Init would presample relevant distributions (typically b distributions) for faster Amp calls. This behaviour is, in contrary, undesirable for evaluating s distributions.

Reimplemented in Elegent::BSWModel, and Elegent::GodizovModel.

virtual TComplex Elegent::Model::Prf ( double  b ) const

pure 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.

Implemented in Elegent::InterpolationModel, Elegent::BSWModel, Elegent::IslamModel, Elegent::PPPModel, Elegent::GodizovModel, Elegent::DLModel, Elegent::JenkovszkyModel, Elegent::BHModel, Elegent::FerreiraModel, and Elegent::ExpModel.

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

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