]>
Commit | Line | Data |
---|---|---|
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 */ | |
5 | ||
6 | /* $Id$ */ | |
7 | ||
8 | // | |
9 | // Experimental data inspired Gray Particle Model for p-Pb collisions | |
10 | // Fluctuations are calculated from a binomial distribution. | |
11 | // Author: A.Morsch | |
12 | // | |
13 | ||
14 | #include "AliSlowNucleonModel.h" | |
15 | ||
16 | class AliCollisionGeometry; | |
17 | ||
18 | class AliSlowNucleonModelExp : public AliSlowNucleonModel | |
19 | { | |
20 | public: | |
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 GetNumberOfSlowNucleons2s(AliCollisionGeometry* geo, | |
28 | Int_t& ngp, Int_t& ngn, Int_t& nbp, Int_t& nbn) const; | |
29 | // 1st model | |
30 | virtual void SetParameters(Float_t alpha1, Float_t alpha2); | |
31 | virtual void SetSaturation(Bool_t saturation) {fApplySaturation = saturation;} | |
32 | virtual void SetSaturationParams(Int_t ngray=15, Int_t nblack=28) | |
33 | {fnGraySaturation=ngray; fnBlackSaturation=nblack;} | |
34 | // 2nd model | |
35 | virtual void SetLCPparam(Float_t al) {fLCPparam=al;} | |
36 | virtual void SetNslowParams(Float_t a, Float_t b, Float_t c) | |
37 | {fSlownparam[0]=a; fSlownparam[1]=b; fSlownparam[2]=c;} | |
38 | ||
39 | protected: | |
40 | Float_t fP; // Number of protons in the target | |
41 | Float_t fN; // Number of neutrons in the target | |
42 | Float_t fAlphaGray; // Proportionality between gray particles and number of collisions | |
43 | Float_t fAlphaBlack; // Proportionality between black particles and number of collisions | |
44 | Bool_t fApplySaturation; // If true apply satoration to N_black vs. N_gray | |
45 | Int_t fnGraySaturation; // N_gray value for N_black saturation | |
46 | Int_t fnBlackSaturation; // N_black saturation value | |
47 | // | |
48 | // Adding parameters for 2nd model that can be tuned during config | |
49 | Float_t fLCPparam; // parameter to calculate LCP from <Nslow p> | |
50 | Float_t fSlownparam[3]; // parameters to calculate <Nslow n> from LCP | |
51 | // | |
52 | // Adding parameter to smear the number of slow nucleons | |
53 | Float_t fSigmaSmear; | |
54 | ||
55 | ||
56 | ClassDef(AliSlowNucleonModelExp, 4) // Gray Particle Model (Experiment inspired) | |
57 | }; | |
58 | #endif | |
59 | ||
60 | ||
61 | ||
62 | ||
63 | ||
64 | ||
65 |