1 #ifndef ALISLOWNUCLEONMODELEXP_H
2 #define ALISLOWNUCLEONMODELEXP_H
3 /* Copyright(c) 198-1999, ALICE Experiment at CERN, All rights reserved. *
4 * See cxx source for full Copyright notice */
9 // Experimental data inspired Gray Particle Model for p-Pb collisions
10 // Fluctuations are calculated from a binomial distribution.
14 #include "AliSlowNucleonModel.h"
16 class AliCollisionGeometry;
18 class AliSlowNucleonModelExp : public AliSlowNucleonModel
21 AliSlowNucleonModelExp();
22 virtual ~AliSlowNucleonModelExp(){;}
23 virtual void GetNumberOfSlowNucleons(AliCollisionGeometry* geo,
24 Int_t& ngp, Int_t& ngn, Int_t& nbp, Int_t& nbn) const;
25 virtual void GetNumberOfSlowNucleons2(AliCollisionGeometry* geo,
26 Int_t& ngp, Int_t& ngn, Int_t& nbp, Int_t& nbn) const;
27 virtual void SetParameters(Float_t alpha1, Float_t alpha2);
28 virtual void SetSaturation(Bool_t saturation) {fApplySaturation = saturation;}
29 virtual void SetSaturationParams(Int_t ngray=15, Int_t nblack=28)
30 {fnGraySaturation=ngray; fnBlackSaturation=nblack;}
33 Float_t fP; // Number of protons in the target
34 Float_t fN; // Number of neutrons in the target
35 Float_t fAlphaGray; // Proportionality between gray particles and number of collisions
36 Float_t fAlphaBlack; // Proportionality between black particles and number of collisions
37 Bool_t fApplySaturation; // If true apply satoration to N_black vs. N_gray
38 Int_t fnGraySaturation; // N_gray value for N_black saturation
39 Int_t fnBlackSaturation; // N_black saturation value
41 ClassDef(AliSlowNucleonModelExp,2) // Gray Particle Model (Experiment inspired)