KfParticlePDG.h

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/* Copyright (C) 2024 GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
   SPDX-License-Identifier: GPL-3.0-only
   Authors: Sergei Zharko [committer] */

 
#pragma once
 
#include "KfDefs.h"
 
namespace cbm::algo::kf
{
  class alignas(VcMemAlign) ParticlePDG {
    constexpr ParticlePDG(int pid, double mass, bool bremsstr) : fMass(mass), fPid(pid), fbBremsstrahlung(bremsstr) {}

    ParticlePDG() = delete;

    constexpr double GetMass() const { return fMass; }

    constexpr double GetMassSq() const { return fMass * fMass; }

    constexpr int GetPid() const { return fPid; }

    constexpr bool IfBremsstrahlung() const { return fbBremsstrahlung; }
 
   private:
    double fMass{};                
    int fPid{};                    
    bool fbBremsstrahlung{false};  
  };
 
  // Predefined particle definitions
  namespace particle
  {
    constexpr auto Electron = ParticlePDG(11, defs::ElectronMass<double>, true);
    constexpr auto Muon     = ParticlePDG(13, defs::MuonMass<double>, false);
    constexpr auto Pion     = ParticlePDG(211, defs::PionMass<double>, false);
    constexpr auto Kaon     = ParticlePDG(321, defs::KaonMass<double>, false);
    constexpr auto Proton   = ParticlePDG(2212, defs::ProtonMass<double>, false);
  }  // namespace particle
 
}  // namespace cbm::algo::kf