[u/mrichter/AliRoot.git] / EVGEN / AliGenHijing.h

#ifndef ALIGENHIJING_H
#define ALIGENHIJING_H
/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */

/* $Id$ */


#include "AliGenerator.h"
#include "GenTypeDefs.h"
#include <THijing.h>
#include <TString.h>
#include <TArrayI.h>

class TArrayI;
class TParticle;

class AliGenHijing : public AliGenerator
{
    enum {kNoTrigger, kHardProcesses, kDirectPhotons};

 public:
    AliGenHijing();
    AliGenHijing(Int_t npart);
    AliGenHijing(const AliGenHijing &Hijing);
    virtual ~AliGenHijing();
    virtual void    Generate();
    virtual void    Init();
    // set centre of mass energy
    virtual void    SetEnergyCMS(Float_t energy=5500) {fEnergyCMS=energy;}
    virtual void    SetReferenceFrame(TString frame="CMS")
	{fFrame=frame;}
    virtual void    SetProjectile(TString proj="A",
				  Int_t a=208, Int_t z=82)
	{fProjectile = proj;
	fAProjectile = a;
	fZProjectile = z;}    
    virtual void    SetTarget(TString tar="A",
			      Int_t a=208, Int_t z=82)
	{fTarget = tar;
	fATarget = a;
	fZTarget =z;}    
    virtual void    SetImpactParameterRange(Float_t bmin = 0, Float_t bmax =15.)
	{ fMinImpactParam=bmin;
	fMaxImpactParam=bmax;
	}
    virtual void    KeepFullEvent();
    virtual void    SetJetQuenching(Int_t flag=1)     {fQuench    = flag;}
    virtual void    SetShadowing(Int_t flag=1)        {fShadowing = flag;}
    virtual void    SetDecaysOff(Int_t flag=1)        {fDecaysOff = flag;}
    virtual void    SetTrigger(Int_t flag=kNoTrigger) {fTrigger   = flag;}
    virtual void    SetFlavor(Int_t flag=0)           {fFlavor    = flag;}    
    virtual void    SetEvaluate(Int_t flag=0)         {fEvaluate  = flag;}
    virtual void    SetSelectAll(Int_t flag=0)        {fSelectAll = flag;}    
    virtual void    SetSpectators(Int_t spects=1)     {fSpectators = spects;}
    AliGenHijing &  operator=(const AliGenHijing & rhs);
// Physics Routines	    
    virtual void EvaluateCrossSections();
 protected:
    Bool_t SelectFlavor(Int_t pid);
    void   MakeHeader();

 protected:
    TString     fFrame;         // Reference frame 
    TString     fProjectile;    // Projectile
    TString     fTarget;        // Target
    Int_t       fAProjectile;    // Projectile A
    Int_t       fZProjectile;    // Projectile Z
    Int_t       fATarget;        // Target A
    Int_t       fZTarget;        // Target Z
    Float_t     fMinImpactParam; // minimum impact parameter
    Float_t     fMaxImpactParam; // maximum impact parameter	
    Int_t       fKeep;           // Flag to keep full event information
    Int_t       fQuench;         // Flag to switch on jet quenching
    Int_t       fShadowing;      // Flag to switch on voclear effects on parton distribution function
    Int_t       fDecaysOff;      // Flag to turn off decays of pi0, K_s, D, Lambda, sigma
    Int_t       fTrigger;        // Trigger type
    Int_t       fEvaluate;       // Evaluate total and partial cross-sections
    Int_t       fSelectAll;      // Flag to write the full event
    Int_t       fFlavor;         // Selected particle flavor 4: charm+beauty 5: beauty
    Decay_t     fForceDecay;     // Decay channel  are forced
    Float_t     fEnergyCMS;      // Centre of mass energy
    Float_t     fKineBias;       // Bias from kinematic selection
    Int_t       fTrials;         // Number of trials
    TArrayI     fParentSelect;   // Parent particles to be selected 
    TArrayI     fChildSelect;    // Decay products to be selected
    Float_t     fXsection;       // Cross-section
    THijing    *fHijing;         // Hijing
    Float_t     fPtHardMin;      // lower pT-hard cut 
    Float_t     fPtHardMax;      // higher pT-hard cut
    Int_t       fSpectators;     // put spectators on stack

 private:
    // check if particle is selected as parent particle
    Bool_t ParentSelected(Int_t ip);
    // check if particle is selected as child particle
    Bool_t ChildSelected(Int_t ip);
    // all kinematic selection cuts go here 
    Bool_t KinematicSelection(TParticle *particle);
    // adjust the weight from kinematic cuts
    void   AdjustWeights();
    // check seleted daughters
    Bool_t DaughtersSelection(TParticle* iparticle, TClonesArray* particles);
    // check if stable
    Bool_t Stable(TParticle*  particle);
    
    ClassDef(AliGenHijing,1) // AliGenerator interface to Hijing
};
#endif
Commit	Line	Data
110410f9	1	#ifndef ALIGENHIJING_H
	2	#define ALIGENHIJING_H
	3	/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
	4	* See cxx source for full Copyright notice */
	5
	6	/* $Id$ */
	7
	8
	9	#include "AliGenerator.h"
	10	#include "GenTypeDefs.h"
	11	#include <THijing.h>
3b8bd63f	12	#include <TString.h>
110410f9	13	#include <TArrayI.h>
	14
	15	class TArrayI;
	16	class TParticle;
	17
	18	class AliGenHijing : public AliGenerator
	19	{
	20	enum {kNoTrigger, kHardProcesses, kDirectPhotons};
	21
	22	public:
	23	AliGenHijing();
	24	AliGenHijing(Int_t npart);
	25	AliGenHijing(const AliGenHijing &Hijing);
	26	virtual ~AliGenHijing();
	27	virtual void Generate();
	28	virtual void Init();
	29	// set centre of mass energy
	30	virtual void SetEnergyCMS(Float_t energy=5500) {fEnergyCMS=energy;}
59d7832e	31	virtual void SetReferenceFrame(TString frame="CMS")
3b8bd63f	32	{fFrame=frame;}
59d7832e	33	virtual void SetProjectile(TString proj="A",
3b8bd63f	34	Int_t a=208, Int_t z=82)
110410f9	35	{fProjectile = proj;
	36	fAProjectile = a;
	37	fZProjectile = z;}
59d7832e	38	virtual void SetTarget(TString tar="A",
3b8bd63f	39	Int_t a=208, Int_t z=82)
110410f9	40	{fTarget = tar;
	41	fATarget = a;
	42	fZTarget =z;}
	43	virtual void SetImpactParameterRange(Float_t bmin = 0, Float_t bmax =15.)
	44	{ fMinImpactParam=bmin;
	45	fMaxImpactParam=bmax;
	46	}
	47	virtual void KeepFullEvent();
	48	virtual void SetJetQuenching(Int_t flag=1) {fQuench = flag;}
	49	virtual void SetShadowing(Int_t flag=1) {fShadowing = flag;}
	50	virtual void SetDecaysOff(Int_t flag=1) {fDecaysOff = flag;}
	51	virtual void SetTrigger(Int_t flag=kNoTrigger) {fTrigger = flag;}
eb342d2d	52	virtual void SetFlavor(Int_t flag=0) {fFlavor = flag;}
110410f9	53	virtual void SetEvaluate(Int_t flag=0) {fEvaluate = flag;}
110410f9	54	virtual void SetSelectAll(Int_t flag=0) {fSelectAll = flag;}
2705454f	55	virtual void SetSpectators(Int_t spects=1) {fSpectators = spects;}
eb342d2d	56	AliGenHijing & operator=(const AliGenHijing & rhs);
110410f9	57	// Physics Routines
110410f9	58	virtual void EvaluateCrossSections();
eb342d2d	59	protected:
eb342d2d	60	Bool_t SelectFlavor(Int_t pid);
3b8bd63f	61	void MakeHeader();
3b8bd63f	62
110410f9	63	protected:
3b8bd63f	64	TString fFrame; // Reference frame
	65	TString fProjectile; // Projectile
	66	TString fTarget; // Target
	67	Int_t fAProjectile; // Projectile A
	68	Int_t fZProjectile; // Projectile Z
	69	Int_t fATarget; // Target A
	70	Int_t fZTarget; // Target Z
110410f9	71	Float_t fMinImpactParam; // minimum impact parameter
110410f9	72	Float_t fMaxImpactParam; // maximum impact parameter
3b8bd63f	73	Int_t fKeep; // Flag to keep full event information
	74	Int_t fQuench; // Flag to switch on jet quenching
	75	Int_t fShadowing; // Flag to switch on voclear effects on parton distribution function
	76	Int_t fDecaysOff; // Flag to turn off decays of pi0, K_s, D, Lambda, sigma
	77	Int_t fTrigger; // Trigger type
	78	Int_t fEvaluate; // Evaluate total and partial cross-sections
	79	Int_t fSelectAll; // Flag to write the full event
	80	Int_t fFlavor; // Selected particle flavor 4: charm+beauty 5: beauty
	81	Decay_t fForceDecay; // Decay channel are forced
	82	Float_t fEnergyCMS; // Centre of mass energy
	83	Float_t fKineBias; // Bias from kinematic selection
	84	Int_t fTrials; // Number of trials
	85	TArrayI fParentSelect; // Parent particles to be selected
	86	TArrayI fChildSelect; // Decay products to be selected
	87	Float_t fXsection; // Cross-section
	88	THijing *fHijing; // Hijing
	89	Float_t fPtHardMin; // lower pT-hard cut
	90	Float_t fPtHardMax; // higher pT-hard cut
2705454f	91	Int_t fSpectators; // put spectators on stack
110410f9	92
	93	private:
	94	// check if particle is selected as parent particle
	95	Bool_t ParentSelected(Int_t ip);
	96	// check if particle is selected as child particle
	97	Bool_t ChildSelected(Int_t ip);
	98	// all kinematic selection cuts go here
	99	Bool_t KinematicSelection(TParticle *particle);
	100	// adjust the weight from kinematic cuts
	101	void AdjustWeights();
	102	// check seleted daughters
	103	Bool_t DaughtersSelection(TParticle* iparticle, TClonesArray* particles);
608708ba	104	// check if stable
	105	Bool_t Stable(TParticle* particle);
	106
110410f9	107	ClassDef(AliGenHijing,1) // AliGenerator interface to Hijing
	108	};
	109	#endif
	110
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