| 1 |
#include "UserCode/HbbAnalysis/interface/Objects.hh"
|
| 2 |
|
| 3 |
namespace HbbAnalysis {
|
| 4 |
|
| 5 |
double DeltaPhi(const double phi1, const double phi2)
|
| 6 |
{
|
| 7 |
|
| 8 |
double dPhi = phi1 - phi2;
|
| 9 |
if (dPhi<0) dPhi += 2*TMath::Pi();
|
| 10 |
|
| 11 |
return dPhi;
|
| 12 |
}
|
| 13 |
|
| 14 |
double DeltaR(const BaseVars & v1, const BaseVars & v2)
|
| 15 |
{
|
| 16 |
|
| 17 |
double dEta = v1.eta - v2.eta;
|
| 18 |
double dPhi = v1.phi - v2.phi;
|
| 19 |
if (dPhi<0) dPhi += 2*TMath::Pi();
|
| 20 |
|
| 21 |
return sqrt(dEta*dEta+dPhi*dPhi);
|
| 22 |
}
|
| 23 |
|
| 24 |
double SameSign(const BaseVars & v1, const BaseVars & v2)
|
| 25 |
{
|
| 26 |
|
| 27 |
return v1.charge == v2.charge;
|
| 28 |
}
|
| 29 |
|
| 30 |
double OppSign(const BaseVars & v1, const BaseVars & v2)
|
| 31 |
{
|
| 32 |
|
| 33 |
return (v1.charge != v2.charge &&
|
| 34 |
v1.charge != 0 &&
|
| 35 |
v2.charge != 0);
|
| 36 |
}
|
| 37 |
|
| 38 |
TLorentzVector FourMomentum(const BaseVars & v, const double scale)
|
| 39 |
{
|
| 40 |
double lpx = v.pT*cos(v.phi);
|
| 41 |
double lpy = v.pT*sin(v.phi);
|
| 42 |
//double lp = v.pT/sin(2*atan(exp(-v.eta)));
|
| 43 |
//double lpz = sqrt(lp*lp - v.pT*v.pT);
|
| 44 |
double lpz = v.pT*sinh(v.eta);
|
| 45 |
double lE = v.pT*cosh(v.eta);//v.E
|
| 46 |
|
| 47 |
return TLorentzVector(lpx/scale,lpy/scale,lpz/scale,lE/scale);
|
| 48 |
|
| 49 |
}
|
| 50 |
|
| 51 |
double TransverseMass(const BaseVars & leg1,
|
| 52 |
const BaseVars & leg2,
|
| 53 |
const double mEx,
|
| 54 |
const double mEy)
|
| 55 |
{
|
| 56 |
double px = leg1.pT*cos(leg1.phi) + leg2.pT*cos(leg2.phi) + mEx;
|
| 57 |
double py = leg1.pT*sin(leg1.phi) + leg2.pT*sin(leg2.phi) + mEy;
|
| 58 |
double et = leg1.pT + leg2.pT + TMath::Sqrt(mEx*mEx + mEy*mEy);
|
| 59 |
double mt2 = et*et - (px*px + py*py);
|
| 60 |
if ( mt2 < 0 ) {
|
| 61 |
std::cout << " --- WARNING : mt2 = " << mt2 << " is negative... Set to 0.";
|
| 62 |
return 0.;
|
| 63 |
}
|
| 64 |
return sqrt(mt2);
|
| 65 |
}
|
| 66 |
|
| 67 |
double TransverseMass(const BaseVars & leg1,
|
| 68 |
const double mEx,
|
| 69 |
const double mEy)
|
| 70 |
{
|
| 71 |
double px = leg1.pT*cos(leg1.phi) + mEx;
|
| 72 |
double py = leg1.pT*sin(leg1.phi) + mEy;
|
| 73 |
double et = leg1.pT + TMath::Sqrt(mEx*mEx + mEy*mEy);
|
| 74 |
double mt = et*et - (px*px + py*py);
|
| 75 |
if ( mt < 0 ) {
|
| 76 |
std::cout << " --- WARNING : mt = " << mt << " is negative... Set to 0.";
|
| 77 |
return 0.;
|
| 78 |
}
|
| 79 |
return sqrt(mt);
|
| 80 |
}
|
| 81 |
|
| 82 |
TLorentzVector FourMomentumCDFmethod(const BaseVars & leg1,
|
| 83 |
const BaseVars & leg2,
|
| 84 |
double mEx,
|
| 85 |
double mEy)
|
| 86 |
{
|
| 87 |
double lpx = leg1.pT*cos(leg1.phi) + leg2.pT*cos(leg2.phi) + mEx;
|
| 88 |
double lpy = leg1.pT*sin(leg1.phi) + leg2.pT*sin(leg2.phi) + mEy;
|
| 89 |
double lpz = leg1.pT*sinh(leg1.eta) + leg2.pT*sinh(leg2.eta);
|
| 90 |
double le = leg1.pT*cosh(leg1.eta) + leg2.pT*cosh(leg2.eta) + TMath::Sqrt(mEx*mEx + mEy*mEy);
|
| 91 |
return TLorentzVector(lpx, lpy, lpz, le);
|
| 92 |
}
|
| 93 |
|
| 94 |
TLorentzVector FourMomentumCollinearApprox(const BaseVars & leg1,
|
| 95 |
const BaseVars & leg2,
|
| 96 |
double mEx,
|
| 97 |
double mEy)
|
| 98 |
{
|
| 99 |
double px1 = leg1.pT*cos(leg1.phi);
|
| 100 |
double px2 = leg2.pT*cos(leg2.phi);
|
| 101 |
double py1 = leg1.pT*sin(leg1.phi);
|
| 102 |
double py2 = leg2.pT*sin(leg2.phi);
|
| 103 |
|
| 104 |
|
| 105 |
double x1_numerator = px1*py2 - px2*py1;
|
| 106 |
double x1_denominator = py2*(px1 + mEx) - px2*(py1 + mEy);
|
| 107 |
double x1 = ( x1_denominator != 0. ) ? x1_numerator/x1_denominator : -1.;
|
| 108 |
|
| 109 |
double x2_numerator = x1_numerator;
|
| 110 |
double x2_denominator = px1*(py2 + mEy) - py1*(px2 + mEx);
|
| 111 |
double x2 = ( x2_denominator != 0. ) ? x2_numerator/x2_denominator : -1.;
|
| 112 |
|
| 113 |
if ( (x1 > 0. && x1 < 1.) &&
|
| 114 |
(x2 > 0. && x2 < 1.) ) {
|
| 115 |
TLorentzVector p4 = FourMomentum(leg1,1/x1) + FourMomentum(leg2,1/x2);
|
| 116 |
return p4;
|
| 117 |
} else {
|
| 118 |
return TLorentzVector(0,0,0,0);
|
| 119 |
}
|
| 120 |
}
|
| 121 |
|
| 122 |
}//namespace
|
| 123 |
|
