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#ifndef HeavyFlavorAnalysis_SpecificDecay_BPHMassSymSelect_h
#define HeavyFlavorAnalysis_SpecificDecay_BPHMassSymSelect_h
/** \class BPHMassSymSelect
*
* Description:
* Class for candidate selection by invariant mass (at momentum sum level)
* allowing for decay product mass swap
*
* \author Paolo Ronchese INFN Padova
*
*/
//----------------------
// Base Class Headers --
//----------------------
#include "HeavyFlavorAnalysis/RecoDecay/interface/BPHMomentumSelect.h"
//------------------------------------
// Collaborating Class Declarations --
//------------------------------------
#include "HeavyFlavorAnalysis/RecoDecay/interface/BPHDecayMomentum.h"
#include "HeavyFlavorAnalysis/SpecificDecay/interface/BPHMassSelect.h"
//---------------
// C++ Headers --
//---------------
#include <string>
// ---------------------
// -- Class Interface --
// ---------------------
class BPHMassSymSelect : public BPHMomentumSelect {
public:
/** Constructor
*/
BPHMassSymSelect(const std::string& np, const std::string& nn, const BPHMassSelect* ms)
: nPos(np), nNeg(nn), mSel(ms) {}
// deleted copy constructor and assignment operator
BPHMassSymSelect(const BPHMassSymSelect& x) = delete;
BPHMassSymSelect& operator=(const BPHMassSymSelect& x) = delete;
/** Destructor
*/
~BPHMassSymSelect() override = default;
/** Operations
*/
/// select particle
bool accept(const BPHDecayMomentum& cand) const override {
if (mSel->accept(cand))
return true;
const reco::Candidate* pp = cand.getDaug(nPos);
const reco::Candidate* np = cand.getDaug(nNeg);
reco::Candidate* pc = cand.originalReco(pp)->clone();
reco::Candidate* nc = cand.originalReco(np)->clone();
pc->setMass(np->p4().mass());
nc->setMass(pp->p4().mass());
const reco::Candidate::LorentzVector s4 = pc->p4() + nc->p4();
double mass = s4.mass();
delete pc;
delete nc;
return ((mass >= mSel->getMassMin()) && (mass <= mSel->getMassMax()));
}
private:
std::string nPos;
std::string nNeg;
const BPHMassSelect* mSel;
};
#endif
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