SVertexHypothesis.cxx

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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
// This software is distributed under the terms of the GNU General Public
// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
 
 
#include "DetectorsVertexing/SVertexHypothesis.h"
 
using namespace o2::vertexing;
 
void SVertexHypothesis::set(PID v0, PID ppos, PID pneg, float sig, float nSig, float margin, float nSigTight, float marginTight, float cpt, float cpt1, float cpt2, float cpt3, float bz, float maxSigmaInput)
{
  mPIDV0 = v0;
  mPIDPosProng = ppos;
  mPIDNegProng = pneg;
  mPars[SigmaM] = sig;
  mPars[NSigmaM] = nSig;
  mPars[MarginM] = margin;
  mPars[NSigmaTightM] = nSigTight;
  mPars[MarginTightM] = marginTight;
  mPars[CPt] = cpt;
  mPars[CPt1] = cpt1;
  mPars[CPt2] = cpt2;
  mPars[CPt3] = cpt3;
  maxSigma = maxSigmaInput;
  float absBz{std::abs(bz)};
  if (cpt3 < 1) {
    mPars[CPt] = absBz > 1e-3 ? cpt * 5.0066791 / absBz : 0.; // assume that pT dependent sigma is linear with B; case for HyperTriton and Hyperhydrog4
  }
}
 
void SVertexHypothesis::set(PID v0, PID ppos, PID pneg, const float pars[NPIDParams], float bz, float maxSigmaInput)
{
  set(v0, ppos, pneg, pars[SigmaM], pars[NSigmaM], pars[MarginM], pars[NSigmaTightM], pars[MarginTightM], pars[CPt], pars[CPt1], pars[CPt2], pars[CPt3], bz, maxSigmaInput);
}
 
void SVertex3Hypothesis::set(PID v0, PID ppos, PID pneg, PID pbach, float sig, float nSig, float margin, float cpt, float bz)
{
  mPIDV0 = v0;
  mPIDPosProng = ppos;
  mPIDNegProng = pneg;
  mPIDBachProng = pbach;
  mPars[SigmaM] = sig;
  mPars[NSigmaM] = nSig;
  mPars[MarginM] = margin;
  mPars[CPt] = std::abs(bz) > 1e-3 ? cpt * 5.0066791 / std::abs(bz) : 0.; // assume that pT dependent sigma is linear with B
}
 
void SVertex3Hypothesis::set(PID v0, PID ppos, PID pneg, PID pbach, const float pars[NPIDParams], float bz)
{
  set(v0, ppos, pneg, pbach, pars[SigmaM], pars[NSigmaM], pars[MarginM], pars[CPt], bz);
}