KVImpactParameters::participant_spectator_model Class Reference

Detailed Description

Formulae for participant-spectator model.

See Gosset et al., {\it Phys. Rev.} {\bf C16} (1977) 629

Definition at line 16 of file participant_spectator_model.h.

#include <participant_spectator_model.h>

Public Member Functions
	participant_spectator_model ()
	participant_spectator_model (const KVNucleus &PROJ, const KVNucleus &TARG, Bool_t normalize_b=kFALSE, Bool_t normalize_participants=kFALSE)
virtual	~participant_spectator_model ()
double	F (double b, bool target=false) const
double	operator() (double *x, double *)
double	projectile_participants (double b) const
double	proton_participants (double b) const
void	set (const KVNucleus &PROJ, const KVNucleus &TARG, Bool_t normalize_b=kFALSE, Bool_t normalize_participants=kFALSE)
double	target_participants (double b) const
double	total_participants (double b) const

Constructor & Destructor Documentation

participant_spectator_model() [1/2]

KVImpactParameters::participant_spectator_model::participant_spectator_model ( )

inline

Definition at line 24 of file participant_spectator_model.h.

participant_spectator_model() [2/2]

KVImpactParameters::participant_spectator_model::participant_spectator_model ( const KVNucleus &  PROJ, const KVNucleus &  TARG, Bool_t  normalize_b = kFALSE, Bool_t  normalize_participants = kFALSE  )

inline

Constructor given entrance channel nuclei.

Parameters

[in]

normalize_b

if kTRUE, impact parameter is normalized to sum of radii

Definition at line 25 of file participant_spectator_model.h.

~participant_spectator_model()

virtual KVImpactParameters::participant_spectator_model::~participant_spectator_model ( )

inlinevirtual

Definition at line 40 of file participant_spectator_model.h.

Member Function Documentation

F()

double KVImpactParameters::participant_spectator_model::F	(	double	b,
		bool	target = false
	)		const

The number of participant nucleons in a spherical nucleus of mass number \(A_1\) and radius \(R_1\), aimed with impact parameter \(b\) at a spherical nucleus of mass number \(A_2\) and radius \(R_2\) is given by

\[ N_1=A_1 F(\nu,\beta) \]

Parameters

[in]

b

impact parameter of collision. This is given in [fm] unless constructor was called with normalize_b=kTRUE: then \(0\leq b\leq 1\).

Definition at line 35 of file participant_spectator_model.cpp.

operator()()

double KVImpactParameters::participant_spectator_model::operator() ( double *  x, double *    )

inline

Returns total number of participants versus b.

If constructor called with normalize_participants=kTRUE, will be normalized to value at b=0.

For use with ROOT TF1 class for drawing:

participant_spectator_model ps("36Ar", "58Ni", kTRUE);
TF1 f_ps("PS", ps);
f_ps.Draw();

Definition at line 56 of file participant_spectator_model.h.

projectile_participants()

double KVImpactParameters::participant_spectator_model::projectile_participants ( double  b ) const

inline

Definition at line 81 of file participant_spectator_model.h.

proton_participants()

double KVImpactParameters::participant_spectator_model::proton_participants ( double  b ) const

inline

Definition at line 89 of file participant_spectator_model.h.

set()

void KVImpactParameters::participant_spectator_model::set ( const KVNucleus &  PROJ, const KVNucleus &  TARG, Bool_t  normalize_b = kFALSE, Bool_t  normalize_participants = kFALSE  )

inline

Definition at line 42 of file participant_spectator_model.h.

target_participants()

double KVImpactParameters::participant_spectator_model::target_participants ( double  b ) const

inline

Definition at line 85 of file participant_spectator_model.h.

total_participants()

double KVImpactParameters::participant_spectator_model::total_participants ( double  b ) const

inline

Returns total number of participants versus b.

If constructor called with normalize_participants=kTRUE, will be normalized to value at b=0.

Definition at line 72 of file participant_spectator_model.h.