newly implemented model for slow nucleon production

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

diff --git a/EVGEN/AliGenPHOSlib.h b/EVGEN/AliGenPHOSlib.h
index 0841ab6fcd3c843b9372cfd1e84a590086811eed..0c1ddc2283b32943d6e46f43b39562ad0ac10cad 100644 (file)
--- a/EVGEN/AliGenPHOSlib.h
+++ b/EVGEN/AliGenPHOSlib.h
@@ -6,46 +6,87 @@
 
 /* $Id$ */
 
+//======================================================================
+//  AliGenPHOSlib class contains parameterizations of the
+//  pion, kaon, eta, omega, etaprime, phi and baryon (proton, 
+//  antiproton, neutron and anti-neutron) particles for the 
+//  study of the neutral background in PHOS detector. 
+//  Additional particle species simulation options has been added:
+//  Charged Pion, Charged Kaons, KLong Proton, Anti-Proton, Neutron,
+//  Anti-Neutron --> Changes made by Gustavo Conesa in November 2004
+//======================================================================
+
 class TRandom;
 
 class AliGenPHOSlib :
 public AliGenLib
 {
  public:
-    enum constants{kPion, kKaon, kEta, kOmega, kEtaPrime, kPhi, kBaryon};
+    enum constants{kPion, kChargedPion, kPi0, kPi0Flat, kKaon, kChargedKaon, kKaon0L,
+                  kEta, kEtaFlat,kOmega, kOmegaFlat, kEtaPrime, kPhi, 
+                  kBaryon, kProton, kAProton, kNeutron, kANeutron};
+    GenFunc   GetPt(Int_t param, const char* tname=0) const;
+    GenFunc   GetY (Int_t param, const char* tname=0) const;
+    GenFuncIp GetIp(Int_t param, const char* tname=0) const;   
+ private:
 // pions
-    static Double_t PtPion(Double_t *px, Double_t *dummy);
+    static Double_t PtPion(const Double_t *px, const Double_t *dummy);
     static Double_t PtScal(Double_t pt, Int_t np);
-    static Double_t YPion( Double_t *py, Double_t *dummy);
+    static Double_t YPion( const Double_t *py, const Double_t *dummy);
     static Int_t    IpPion(TRandom* ran);
+    static Int_t    IpChargedPion(TRandom* ran);
+//  pi0 Distribution
+    static Double_t PtPi0(const Double_t *px, const Double_t *dummy);
+//  pi0 Flat Distribution
+    static Double_t PtPi0Flat(const Double_t *px, const Double_t *dummy);
+    static Double_t YPi0Flat( const Double_t *py, const Double_t *dummy);
+    static Int_t    IpPi0Flat(TRandom* ran); 
+    
 // kaons
-    static Double_t PtKaon(Double_t *px, Double_t *dummy);
-    static Double_t YKaon( Double_t *py, Double_t *dummy);
+    static Double_t PtKaon(const Double_t *px, const Double_t *dummy);
+    static Double_t YKaon( const Double_t *py, const Double_t *dummy);
     static Int_t    IpKaon(TRandom* ran);
+    static Int_t    IpChargedKaon(TRandom* ran);
+    static Int_t    IpKaon0L(TRandom* ran);
 // etas
-    static Double_t PtEta(Double_t *px, Double_t *dummy);
-    static Double_t YEta( Double_t *py, Double_t *dummy);
+    static Double_t PtEta(const Double_t *px, const Double_t *dummy);
+    static Double_t YEta( const Double_t *py, const Double_t *dummy);
     static Int_t    IpEta(TRandom *ran);
+    
+// etas Flat Distribution
+    static Double_t PtEtaFlat(const Double_t *px, const Double_t *dummy);
+    static Double_t YEtaFlat( const Double_t *py, const Double_t *dummy);
+    static Int_t    IpEtaFlat(TRandom *ran);
+
 // omegas
-    static Double_t PtOmega(Double_t *px, Double_t *dummy);
-    static Double_t YOmega( Double_t *py, Double_t *dummy);
+    static Double_t PtOmega(const Double_t *px, const Double_t *dummy);
+    static Double_t YOmega( const Double_t *py, const Double_t *dummy);
     static Int_t    IpOmega(TRandom *ran);
+   
+// omegas  Flat Distribution
+    static Double_t PtOmegaFlat(const Double_t *px, const Double_t *dummy);
+    static Double_t YOmegaFlat( const Double_t *py, const Double_t *dummy);
+    static Int_t    IpOmegaFlat(TRandom *ran); 
+
 // etaprime
-    static Double_t PtEtaprime(Double_t *px, Double_t *dummy);
-    static Double_t YEtaprime( Double_t *py, Double_t *dummy);
+    static Double_t PtEtaprime(const Double_t *px, const Double_t *dummy);
+    static Double_t YEtaprime( const Double_t *py, const Double_t *dummy);
     static Int_t    IpEtaprime(TRandom* ran);
+    
 // phis
-    static Double_t PtPhi(Double_t *px, Double_t *dummy);
-    static Double_t YPhi( Double_t *py, Double_t *dummy);
+    static Double_t PtPhi(const Double_t *px, const Double_t *dummy);
+    static Double_t YPhi( const Double_t *py, const Double_t *dummy);
     static Int_t    IpPhi(TRandom* ran);
+    
 // baryons
-    static Double_t PtBaryon(Double_t *px, Double_t *dummy);
-    static Double_t YBaryon( Double_t *py, Double_t *dummy);
+    static Double_t PtBaryon(const Double_t *px, const Double_t *dummy);
+    static Double_t YBaryon( const Double_t *py, const Double_t *dummy);
     static Int_t    IpBaryon(TRandom *ran);
-    
-    GenFunc   GetPt(Int_t param, const char* tname=0);
-    GenFunc   GetY (Int_t param, const char* tname=0);
-    GenFuncIp GetIp(Int_t param, const char* tname=0);    
+    static Int_t    IpProton(TRandom *ran);
+    static Int_t    IpAProton(TRandom *ran);
+    static Int_t    IpNeutron(TRandom *ran);
+    static Int_t    IpANeutron(TRandom *ran);
+
     ClassDef(AliGenPHOSlib,0) // Library providing y and pT parameterisations
 };
 #endif