| Revision: | 1.7 |
| Committed: | Mon Jul 20 04:55:33 2009 UTC (15 years, 9 months ago) by loizides |
| Content type: | text/plain |
| Branch: | MAIN |
| CVS Tags: | Mit_020d, TMit_020d, Mit_020c, Mit_021, Mit_021pre2, Mit_021pre1, Mit_020b, Mit_020a, Mit_020, Mit_020pre1, Mit_018, Mit_017, Mit_017pre3, Mit_017pre2, Mit_017pre1, Mit_016, Mit_015b, Mit_015a, Mit_015, Mit_014e, Mit_014d, Mit_014c, Mit_014b, Mit_014a, Mit_014, Mit_014pre3, Mit_014pre2, Mit_014pre1, Mit_013d, Mit_013c, Mit_013b, Mit_013a, Mit_013, Mit_013pre1, Mit_012i, Mit_012g, Mit_012f, Mit_012e, Mit_012d, Mit_012c, Mit_012b, Mit_012a, Mit_012, Mit_011a, Mit_011, Mit_010a, Mit_010 |
| Changes since 1.6: | +3 -1 lines |
| Log Message: | Changes for docu |
| # | Content |
|---|---|
| 1 | // $Id: DiTauSystem.cc,v 1.6 2009/01/20 10:28:36 loizides Exp $ |
| 2 | |
| 3 | #include "MitPhysics/Utils/interface/DiTauSystem.h" |
| 4 | #include "MitAna/DataTree/interface/CompositeParticle.h" |
| 5 | #include "MitAna/DataTree/interface/Met.h" |
| 6 | #include "MitAna/DataTree/interface/Particle.h" |
| 7 | |
| 8 | ClassImp(mithep::DiTauSystem) |
| 9 | |
| 10 | using namespace mithep; |
| 11 | |
| 12 | //-------------------------------------------------------------------------------------------------- |
| 13 | DiTauSystem::DiTauSystem(const Particle *t1, const Particle *t2, const Met *met) : |
| 14 | fT1(t1), |
| 15 | fT2(t2), |
| 16 | fMet(met), |
| 17 | fRecoMass(0), |
| 18 | fVisMass(0), |
| 19 | fMT(0), |
| 20 | fETll(0), |
| 21 | fETnn(0) |
| 22 | { |
| 23 | // Constructor. |
| 24 | |
| 25 | Init(); |
| 26 | } |
| 27 | |
| 28 | //-------------------------------------------------------------------------------------------------- |
| 29 | void DiTauSystem::Init() |
| 30 | { |
| 31 | // Calculate the kinematical variables. |
| 32 | |
| 33 | CompositeParticle tt; |
| 34 | tt.AddDaughter(fT1); |
| 35 | tt.AddDaughter(fT2); |
| 36 | |
| 37 | CompositeParticle higgs; |
| 38 | higgs.AddDaughter(fT1); |
| 39 | higgs.AddDaughter(fT2); |
| 40 | higgs.AddDaughter(fMet); |
| 41 | |
| 42 | Double_t xvar[3]; |
| 43 | xvar[0] = higgs.Px()*fT2->Py()-higgs.Py()*fT2->Px(); |
| 44 | xvar[1] = higgs.Py()*fT1->Px()-higgs.Px()*fT1->Py(); |
| 45 | xvar[2] = fT1->Px()*fT2->Py()-fT1->Py()*fT2->Px(); |
| 46 | |
| 47 | for (Int_t i=0; i<2; ++i) |
| 48 | xvar[i]==0 ? fXTau[i]=0 : fXTau[i]=xvar[2]/xvar[i]; |
| 49 | |
| 50 | fVisMass = tt.Mass(); |
| 51 | if (fXTau[0] > 0 && fXTau[1] > 0) |
| 52 | fRecoMass = fVisMass / TMath::Sqrt(fXTau[0]*fXTau[1]); |
| 53 | else |
| 54 | fRecoMass = 0; |
| 55 | |
| 56 | Double_t visMassS = fVisMass*fVisMass; |
| 57 | Double_t ptll = tt.Pt(); |
| 58 | Double_t ptmis = fMet->Pt(); |
| 59 | if (visMassS > 0) { |
| 60 | fETll = TMath::Sqrt(ptll*ptll + visMassS); |
| 61 | fETnn = TMath::Sqrt(ptmis*ptmis + visMassS); |
| 62 | fMT = (fETll+fETnn)*(fETll+fETnn)-(ptll+ptmis)*(ptll+ptmis); |
| 63 | (fMT > 0) ? fMT=TMath::Sqrt(fMT) : fMT=0; |
| 64 | } |
| 65 | } |