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pam-fi |
1.1 |
/* |
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* TofBetaRigHeCut.cpp |
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* |
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* Created on: 14/set/2009 |
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* Author: Sergio Ricciarini, Nicola Mori |
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*/ |
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/*! @file TofBetaRigHeCut.cpp The TofBetaRigHeCut class implementation file */ |
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#include "TofBetaRigHeCut.h" |
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int TofBetaRigHeCut::Check(PamLevel2 *event) { |
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TrkTrack *trkTrack = event->GetTrack(0)->GetTrkTrack(); |
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Int_t seqno = trkTrack->GetSeqNo(); |
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Int_t ntrack_tof = 0; |
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for (Int_t i = 0; i < event->GetToFLevel2()->ntrk(); i++) { |
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if (event->GetToFLevel2()->GetToFTrkVar(i)->trkseqno == seqno) |
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ntrack_tof = i; |
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} |
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Float_t tofBeta = fabs(event->GetToFLevel2()->CalcBeta(ntrack_tof, 10., 10., 20.)); // beta[12] |
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// Float_t rigMod = _mass*fabs(beta)*pow((1-pow(beta,2)),-0.5)/abs(_charge); |
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Int_t _charge = 2; |
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Float_t mass_4He = 3.7274; // GeV (http://hyperphysics.phy-astr.gsu.edu/Hbase/pertab/He.html) |
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Float_t mass_3He = 2.8084; // GeV (http://hyperphysics.phy-astr.gsu.edu/Hbase/pertab/He.html) |
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Float_t ZR2 = (trkTrack->GetRigidity() * _charge) * (trkTrack->GetRigidity() * _charge); |
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Float_t trkBeta_4He = sqrt(ZR2 / (ZR2 + mass_4He * mass_4He)); |
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Float_t trkBeta_3He = sqrt(ZR2 / (ZR2 + mass_3He * mass_3He)); |
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if ((fabs(tofBeta - trkBeta_4He) > _threshold * tofBeta) && (fabs(tofBeta - trkBeta_3He) > _threshold * tofBeta)) { |
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return 0; |
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} |
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return CUTOK; |
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} |
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