def findMatch_pfc_old(lepton, pfcands):
drmin = 10
idx = -1
if lepton.pt() > 0:
leptonTlv = TLorentzVector()
leptonTlv.SetPxPyPzE(lepton.px(), lepton.py(), lepton.pz(),
lepton.energy())
for ipfc, pfc in enumerate(pfcands):
if pfc.trackRef().isNull(): continue
if pfc.trackRef().get().numberOfValidHits() == 0: continue
if pfc.trackRef().get().ndof() == 0: continue
if pfc.trackRef().get().charge() == 0: continue
# if not passesPreselection_basic_pfc(pfc): continue
if not pfc.charge() * lepton.charge() > 0: continue
# if not abs(pfc.pt() - lepton.pt()) / lepton.pt() < 0.2: continue
pfcTlv = TLorentzVector()
pfcTlv.SetPxPyPzE(pfc.px(), pfc.py(), pfc.pz(), pfc.energy())
dr = pfcTlv.DeltaR(leptonTlv)
if dr < drmin:
drmin = dr
idx = ipfc
return idx, drmin
def ObtainAbb(mc_px, mc_py, mc_pz, mc_en, mc_id, mc_momidx):
n = len(mc_px)
genaobj = collections.namedtuple('GenAObj', 'aLVec aIdx')
genbobj = collections.namedtuple('GenBObj', 'bLVec bMomId bMomIdx')
lgenaobj = []
lgenbobj = []
for imc in range( 0, n):
if abs(mc_id[imc]) == 5:
thislb = TLorentzVector()
thislb.SetPxPyPzE( mc_px[imc], mc_py[imc], mc_pz[imc], mc_en[imc] )
lgenbobj.append( genbobj( bLVec = thislb, bMomId = mc_id[mc_momidx[imc]], bMomIdx = mc_momidx[imc] ) )
if mc_id[imc] == 36:
thisla = TLorentzVector()
thisla.SetPxPyPzE( mc_px[imc], mc_py[imc], mc_pz[imc], mc_en[imc] )
lgenaobj.append( genaobj( aLVec = thisla, aIdx = imc ) )
lAbb = []
for aobj in lgenaobj:
this = Abb()
this.a = aobj.aLVec
for bobj in lgenbobj:
if aobj.aIdx == bobj.bMomIdx and bobj.bMomId == 36:
this.lb.append( bobj.bLVec )
lAbb.append(this)
return lAbb
def METGL2(neutralinos, charginos, neutrinos, MET): # neutrinos,
#Define TLorentzVector for neutralinos and charginos
met_n = TLorentzVector()
met_c = TLorentzVector()
met_nt = TLorentzVector()
MET_nX = 0
MET_nY = 0
for n in neutralinos:
MET_nX = MET_nX + n.P4().Px()
MET_nY = MET_nY + n.P4().Py()
met_n.SetPxPyPzE(MET_nX, MET_nY, 0, 0)
MET_cX = 0
MET_cY = 0
for c in charginos:
MET_cX = MET_cX + c.P4().Px()
MET_cY = MET_cY + c.P4().Py()
met_c.SetPxPyPzE(MET_cX, MET_cY, 0, 0)
MET_ntX = 0
MET_ntY = 0
for nt in neutrinos:
MET_ntX = MET_ntX + nt.P4().Px()
MET_ntY = MET_ntY + nt.P4().Py()
met_nt.SetPxPyPzE(MET_ntX, MET_ntY, 0, 0)
## Sum of the vector components
met_gl = met_n + met_c + met_nt
for m in MET:
m.MET = abs(met_gl.Mag())
m.Phi = met_gl.Phi()
return MET
def IsMuonsGhosts(self, entry_number, entry, all_muons):
"""
Check muons angle to see if not ghost particule
Returns:
Bool --
"""
muP = TLorentzVector()
muM = TLorentzVector()
muP.SetPxPyPzE(getattr(entry, self.dimuon_leafs[0] + '_PX'),
getattr(entry, self.dimuon_leafs[0] + '_PY'),
getattr(entry, self.dimuon_leafs[0] + '_PZ'),
getattr(entry, self.dimuon_leafs[0] + '_PE'))
muM.SetPxPyPzE(getattr(entry, self.dimuon_leafs[1] + '_PX'),
getattr(entry, self.dimuon_leafs[1] + '_PY'),
getattr(entry, self.dimuon_leafs[1] + '_PZ'),
getattr(entry, self.dimuon_leafs[1] + '_PE'))
if entry_number == 1:
all_muons.append([muP, muM])
return False
else:
for cand in all_muons:
deltaThetaMuM = cand[0].Angle(muP.Vect())
deltaThetaMuM = cand[1].Angle(muM.Vect())
if deltaThetaMuM > 0.9999 and deltaThetaMuM > 0.9999:
return True
all_muons.append([muP, muM])
return False
def CostHE(p1, charge1, p2): #Cosine of the theta decay angle (top (Q=+2/3)) in the Helicity frame pTop1CM = TLorentzVector(0,0,-1,1) # In the CM frame pTop2CM = TLorentzVector(0,0,-1,1) # In the CM frame pDitopCM = TLorentzVector(0,0,-1,1) # In the CM frame pTop1Ditop = TLorentzVector(0,0,-1,1) # In the Ditop rest frame pTop2Ditop = TLorentzVector(0,0,-1,1) # In the Ditop rest frame beta = TVector3(0,0,0) zaxisCS = TVector3(0,0,0) # Get the muons parameters in the CM frame pTop1CM.SetPxPyPzE(p1.Px(),p1.Py(),p1.Pz(),p1.E()) pTop2CM.SetPxPyPzE(p2.Px(),p2.Py(),p2.Pz(),p2.E()) # Obtain the Ditop parameters in the CM frame pDitopCM=pTop1CM+pTop2CM # Translate the muon parameters in the Ditop rest frame beta=(-1./pDitopCM.E())*pDitopCM.Vect() if(beta.Mag()>=1): return 666. pTop1Ditop=pTop1CM pTop2Ditop=pTop2CM pTop1Ditop.Boost(beta) pTop2Ditop.Boost(beta) # Determine the z axis for the calculation of the polarization angle (i.e. the direction of the Ditop in the CM system) zaxis=(pDitopCM.Vect()).Unit() # Calculation of the polarization angle (angle between mu+ and the z axis defined above) cost = -999. if(charge1>0): cost = zaxis.Dot((pTop1Ditop.Vect()).Unit()) else: cost = zaxis.Dot((pTop2Ditop.Vect()).Unit()) return cost
def findMatch_track_old_random(lepton, tracks):
drmin = 10
idx = -1
if lepton.pt() > 0:
leptonTlv = TLorentzVector()
leptonTlv.SetPxPyPzE(lepton.px(), lepton.py(), lepton.pz(),
lepton.energy())
for itrack, track in enumerate(tracks):
if track.numberOfValidHits() == 0: continue
if track.ndof() == 0: continue
if track.charge() == 0: continue
# if not passesPreselection_basic_track(track): continue
if not track.charge() * lepton.charge() < 0: continue
# if not abs(track.pt() - lepton.pt()) / lepton.pt() < 0.2: continue
trackTlv = TLorentzVector()
trackTlv.SetPxPyPzE(track.px(), track.py(), track.pz(),
track.pt() * TMath.CosH(track.eta()))
dr = trackTlv.DeltaR(leptonTlv)
if dr < drmin:
drmin = dr
idx = itrack
return idx, drmin
def selection(event):
vect = TLorentzVector()
vect.SetPxPyPzE(event.GenJet[0], event.GenJet[1], event.GenJet[2],
event.GenJet[3])
if abs(vect.Eta()) > 0.5 or vect.Pt() < 50 or vect.Pt() > 70:
return False
vect.SetPxPyPzE(event.Jet[0], event.Jet[1], event.Jet[2], event.Jet[3])
if abs(vect.Eta()) > 0.5 or vect.Pt() < 50:
return False
else:
return True
def PhiHE(p1, charge1, p2): # Phi decay angle (top (Q=+2/3)) in the Helicity frame pTop1Lab = TLorentzVector(0,0,-1,1) # In the lab. frame pTop2Lab = TLorentzVector(0,0,-1,1) # In the lab. frame pProjLab = TLorentzVector(0,0,-1,1) # In the lab. frame pTargLab = TLorentzVector(0,0,-1,1) # In the lab. frame pDitopLab = TLorentzVector(0,0,-1,1) # In the lab. frame pTop1Ditop = TLorentzVector(0,0,-1,1) # In the Ditop rest frame pTop2Ditop = TLorentzVector(0,0,-1,1) # In the Ditop rest frame pProjDitop = TLorentzVector(0,0,-1,1) # In the Ditop rest frame pTargDitop = TLorentzVector(0,0,-1,1) # In the Ditop rest frame beta = TVector3(0,0,0) xaxis = TVector3(0,0,0) yaxis = TVector3(0,0,0) zaxis = TVector3(0,0,0) mp = 0.93827231 ep = 6500. # Get the muons parameters in the LAB frame pTop1Lab.SetPxPyPzE(p1.Px(),p1.Py(),p1.Pz(),p1.E()) pTop2Lab.SetPxPyPzE(p2.Px(),p2.Py(),p2.Pz(),p2.E()) # Obtain the Ditop parameters in the LAB frame pDitopLab=pTop1Lab+pTop2Lab zaxis=(pDitopLab.Vect()).Unit() # Translate the muon parameters in the Ditop rest frame beta=(-1./pDitopLab.E())*pDitopLab.Vect() if(beta.Mag()>=1.): return 666. pProjLab.SetPxPyPzE(0.,0.,-ep,TMath.Sqrt(ep*ep+mp*mp)) pTargLab.SetPxPyPzE(0.,0.,+ep,TMath.Sqrt(ep*ep+mp*mp)) pProjDitop=pProjLab pTargDitop=pTargLab pProjDitop.Boost(beta) pTargDitop.Boost(beta) yaxis=((pProjDitop.Vect()).Cross(pTargDitop.Vect())).Unit() xaxis=(yaxis.Cross(zaxis)).Unit() pTop1Ditop=pTop1Lab pTop2Ditop=pTop2Lab pTop1Ditop.Boost(beta) pTop2Ditop.Boost(beta) phi = -999. if(charge1>0.): phi = TMath.ATan2((pTop1Ditop.Vect()).Dot(yaxis),(pTop1Ditop.Vect()).Dot(xaxis)) else: phi = TMath.ATan2((pTop2Ditop.Vect()).Dot(yaxis),(pTop2Ditop.Vect()).Dot(xaxis)) return phi
def PhiCS(p1, charge1, p2): # Phi decay angle (top (Q=+2/3)) in the Collins-Soper frame pTop1CM = TLorentzVector(0,0,-1,1) # In the CM frame pTop2CM = TLorentzVector(0,0,-1,1) # In the CM frame pProjCM = TLorentzVector(0,0,-1,1) # In the CM frame pTargCM = TLorentzVector(0,0,-1,1) # In the CM frame pDitopCM = TLorentzVector(0,0,-1,1) # In the CM frame pTop1Ditop = TLorentzVector(0,0,-1,1) # In the Ditop rest frame pTop2Ditop = TLorentzVector(0,0,-1,1) # In the Ditop rest frame pProjDitop = TLorentzVector(0,0,-1,1) # In the Ditop rest frame pTargDitop = TLorentzVector(0,0,-1,1) # In the Ditop rest frame beta = TVector3(0,0,0) yaxisCS = TVector3(0,0,0) xaxisCS = TVector3(0,0,0) zaxisCS = TVector3(0,0,0) mp = 0.93827231 ep = 6500. # Fill the Lorentz vector for projectile and target in the CM frame pProjCM.SetPxPyPzE(0.,0.,-ep,TMath.Sqrt(ep*ep+mp*mp)) pTargCM.SetPxPyPzE(0.,0.,+ep,TMath.Sqrt(ep*ep+mp*mp)) # Get the muons parameters in the CM frame pTop1CM.SetPxPyPzE(p1.Px(),p1.Py(),p1.Pz(),p1.E()) pTop2CM.SetPxPyPzE(p2.Px(),p2.Py(),p2.Pz(),p2.E()) # Obtain the Ditop parameters in the CM frame pDitopCM=pTop1CM+pTop2CM # Translate the Ditop parameters in the Ditop rest frame beta=(-1./pDitopCM.E())*pDitopCM.Vect() if(beta.Mag()>=1): return 666. pTop1Ditop=pTop1CM pTop2Ditop=pTop2CM pProjDitop=pProjCM pTargDitop=pTargCM pTop1Ditop.Boost(beta) pTop2Ditop.Boost(beta) pProjDitop.Boost(beta) pTargDitop.Boost(beta) # Determine the z axis for the CS angle zaxisCS=(((pProjDitop.Vect()).Unit())-((pTargDitop.Vect()).Unit())).Unit() yaxisCS=(((pProjDitop.Vect()).Unit()).Cross((pTargDitop.Vect()).Unit())).Unit() xaxisCS=(yaxisCS.Cross(zaxisCS)).Unit() phi = -999. if(charge1>0.): phi = TMath.ATan2((pTop1Ditop.Vect()).Dot(yaxisCS),((pTop1Ditop.Vect()).Dot(xaxisCS))) else: phi = TMath.ATan2((pTop2Ditop.Vect()).Dot(yaxisCS),((pTop2Ditop.Vect()).Dot(xaxisCS))) if(phi>TMath.Pi()): phi = phi-TMath.Pi() return phi
def get_incoming_partons(ZZjj_p4):
com_energy_half = ZZjj_p4.M() / 2.
parton_1 = TLorentzVector()
parton_1.SetPxPyPzE(0, 0, com_energy_half, com_energy_half)
parton_2 = TLorentzVector()
parton_2.SetPxPyPzE(0, 0, -com_energy_half, com_energy_half)
boost = ZZjj_p4.BoostVector()
parton_1.Boost(boost)
parton_2.Boost(boost)
return [p4_to_MG_vector(parton_1), p4_to_MG_vector(parton_2)]
def CostCS(p1, charge1, p2): #Cosine of the theta decay angle (top (Q=+2/3)) in the Collins-Soper frame pTop1CM = TLorentzVector(0,0,-1,1) # In the CM. frame pTop2CM = TLorentzVector(0,0,-1,1) # In the CM. frame pProjCM = TLorentzVector(0,0,-1,1) # In the CM. frame pTargCM = TLorentzVector(0,0,-1,1) # In the CM. frame pDitopCM = TLorentzVector(0,0,-1,1) # In the CM. frame pTop1Ditop = TLorentzVector(0,0,-1,1) # In the Ditop rest frame pTop2Ditop = TLorentzVector(0,0,-1,1) # In the Ditop rest frame pProjDitop = TLorentzVector(0,0,-1,1) # In the Ditop rest frame pTargDitop = TLorentzVector(0,0,-1,1) # In the Ditop rest frame beta = TVector3(0,0,0) zaxisCS = TVector3(0,0,0) mp = 0.93827231 ep = 6500. # Fill the Lorentz vector for projectile and target in the CM frame pProjCM.SetPxPyPzE(0.,0.,-ep,TMath.Sqrt(ep*ep+mp*mp)) pTargCM.SetPxPyPzE(0.,0.,+ep,TMath.Sqrt(ep*ep+mp*mp)) # Get the Topons parameters in the CM frame pTop1CM.SetPxPyPzE(p1.Px(),p1.Py(),p1.Pz(),p1.E()) pTop2CM.SetPxPyPzE(p2.Px(),p2.Py(),p2.Pz(),p2.E()) # Obtain the Ditop parameters in the CM frame pDitopCM=pTop1CM+pTop2CM # Translate the Ditop parameters in the Ditop rest frame beta=(-1./pDitopCM.E())*pDitopCM.Vect() if(beta.Mag()>=1): return 666. pTop1Ditop=pTop1CM pTop2Ditop=pTop2CM pProjDitop=pProjCM pTargDitop=pTargCM pTop1Ditop.Boost(beta) pTop2Ditop.Boost(beta) pProjDitop.Boost(beta) pTargDitop.Boost(beta) # Determine the z axis for the CS angle zaxisCS=(((pProjDitop.Vect()).Unit())-((pTargDitop.Vect()).Unit())).Unit(); # Determine the CS angle (angle between Top+ and the z axis defined above) cost = -999 if(charge1>0): cost = zaxisCS.Dot((pTop1Ditop.Vect()).Unit()) else: cost = zaxisCS.Dot((pTop2Ditop.Vect()).Unit()) return cost
def invariantMass(electron1, electron2):
electronTlv1 = TLorentzVector()
electronTlv2 = TLorentzVector()
electronTlv1.SetPxPyPzE(electron1.px(), electron1.py(), electron1.pz(),
electron1.energy())
electronTlv2.SetPxPyPzE(electron2.px(), electron2.py(), electron2.pz(),
electron2.energy())
invMass = (electronTlv1 + electronTlv2).M()
return invMass
def wreco(lepp4, metpt, metphi):
nu4 = TLorentzVector()
px = metpt * cos(metphi)
py = metpt * sin(metphi)
pz = 0.
pxl = lepp4.Px()
pyl = lepp4.Py()
pzl = lepp4.Pz()
El = lepp4.E()
a = MW_ * MW_ + 2. * pxl * px + 2. * pyl * py
A = 4. * (El * El - pzl * pzl)
B = -4. * a * pzl
C = 4. * El * El * (px * px + py * py) - a * a
tmproot = B * B - 4. * A * C
if tmproot < 0:
pz = -1. * B / (2 * A)
else:
tmpsol1 = (-B + math.sqrt(tmproot)) / (2.0 * A)
tmpsol2 = (-B - math.sqrt(tmproot)) / (2.0 * A)
if abs(tmpsol2 - pzl) < abs(tmpsol1 - pzl):
pz = tmpsol2
else:
pz = tmpsol1
if abs(pz) > 300:
if abs(tmpsol1) < abs(tmpsol2):
pz = tmpsol1
else:
pz = tmpsol2
nu4.SetPxPyPzE(px, py, pz, math.sqrt(px * px + py * py + pz * pz))
wp4 = lepp4 + nu4
return wp4
def toLV(track):
lv = TLorentzVector()
lv.SetPxPyPzE(track.px() * 1000,
track.py() * 1000,
track.pz() * 1000,
track.e() * 1000) ## in MeV!
return lv
def GetEtaPhi(px, py, pz, en): l = TLorentzVector() l.SetPxPyPzE(px,py,pz,en) #print( "sizeof4Floats: %d, sizeofTL: %d" % ( 4*sys.getsizeof(e), sys.getsizeof(l) ) ) eta = l.Eta() phi = l.Phi() return eta, phi
def makeseed(cluster1,cluster2,i1,i2,particles): p = TLorentzVector() r1 = [ROOT.Double(), ROOT.Double(), ROOT.Double()] r2 = [ROOT.Double(), ROOT.Double(), ROOT.Double()] cluster1.GetPoint(i1,r1[0],r1[1],r1[2]) cluster2.GetPoint(i2,r2[0],r2[1],r2[2]) x0 = 0 z0 = zofx(r1,r2,x0) xExit = xofz(r1,r2,zDipoleExit)*cm2m q = 1 if(particles=="electrons") else -1 H = (zDipoleExit-z0)*cm2m R = H*(LB)/xExit + xExit ## look this up in my sides P = 0.3*B*R v1 = TVector2(r1[2],r1[1]) v2 = TVector2(r2[2],r2[1]) u = rUnit2(v2,v1) uz = u.X() uy = u.Y() px = 0 py = P*uy pz = P*uz p.SetPxPyPzE(px,py,pz,math.sqrt(P*P+me2)) return p
def makeTL(tree, index):
particleFourVector = TLorentzVector()
# Define TLorentz Vector
particleFourVector.SetPxPyPzE(tree.mcPx[index], tree.mcPy[index],
tree.mcPz[index], tree.mcE[index])
# particleFourVector.SetPtEtaPhiE(tree.mcPt[index], tree.mcEta[index],
# tree.mcPhi[index],tree.mcE[index])
return particleFourVector
class particle:
def __init__(self, tree=None, i=None, original=None):
if tree: #Build particle instance from TTree
self.PID = tree.Particle[i].PID
self.mom = tree.Particle[i].Mother1
self.daughters = []
self.m = tree.Particle[i].M
self.e = tree.Particle[i].E
self.p = TLorentzVector()
self.p.SetPxPyPzE(tree.Particle[i].Px, tree.Particle[i].Py,
tree.Particle[i].Pz, tree.Particle[i].E)
self.pt = self.p.Pt()
self.eta = self.p.Eta()
self.phi = self.p.Phi()
self.SF = 1
self.smear = None
self.res = None
elif original: #Make a resolution smeared version of the original
self.PID = copy(original.PID)
self.mom = copy(original.mom)
self.daughters = copy(original.daughters)
self.res = jetEnergyResolution(original.p.E())
self.smearE = -1
while self.smearE < 0:
self.smearE = np.random.normal(0.985, self.res)
# self.offsetM = -1
# while self.offsetM+original.p.M() < 5: self.offsetM = np.random.normal(5, 5)
# self.smearM = -1
# while self.smearM < 0.5: self.smearM = np.random.normal(1, 1)
self.p = TLorentzVector()
self.p.SetPtEtaPhiM(original.p.Pt() * self.smearE,
original.p.Eta(), original.p.Phi(), 0)
# self.p.SetPtEtaPhiM( original.p.Pt() * self.smearE,
# original.p.Eta(),
# original.p.Phi(),
# (original.p.M()+self.offsetM) * self.smearM)
self.pt = self.p.Pt()
self.eta = self.p.Eta()
self.phi = self.p.Phi()
self.m = self.p.M()
self.e = self.p.E()
self.SF = 1
def getDump(self):
out = "PID " + str(self.PID).rjust(3) + " | mom " + str(
self.mom).rjust(3) + " | mass " + str(self.m).ljust(
12) + " | pt " + str(self.pt).ljust(20) + " | eta " + str(
self.eta).ljust(20) + " | phi " + str(self.phi).ljust(20)
if self.res:
out += " | res " + str(self.res).ljust(20) + " | smear " + str(
self.smear).ljust(20)
return out
def dump(self):
print(self.getDump())
def pointingAngle(track1, track2, pv_pos, sv_pos):
trk1Tlv = TLorentzVector()
trk1Tlv.SetPxPyPzE(track1.px(), track1.py(), track1.pz(),
track1.pt() * np.cosh(track1.eta()))
trk2Tlv = TLorentzVector()
trk2Tlv.SetPxPyPzE(track2.px(), track2.py(), track2.pz(),
track2.pt() * np.cosh(track2.eta()))
combinedMomentum = trk2Tlv - trk1Tlv
PVtoSV = [
sv_pos[0] - pv_pos.x(), sv_pos[1] - pv_pos.y(), sv_pos[2] - pv_pos.z()
]
pointingAngle = np.arctan2(PVtoSV[0] - combinedMomentum.X(),
PVtoSV[1] - combinedMomentum.Y())
return pointingAngle
def calculateFinalStateMomenta_GOLD(mB0, m23, mMuMu, cosTheta1, cosTheta2, phi,
mMuPlus, mMuMinus, mPi, mK, pion_ID):
if (pion_ID > 0): # anti-B0
if (phi > 0): phi = pi - phi
else: phi = -pi - phi
cosTheta1 = -cosTheta1
pJpsi = daughterMomentum(mB0, mMuMu, m23)
p4Jpsi = TLorentzVector(0, 0, +pJpsi, sqrt(mMuMu * mMuMu + pJpsi * pJpsi))
p4Kpi = TLorentzVector(0, 0, -pJpsi, sqrt(m23 * m23 + pJpsi * pJpsi))
pB = TLorentzVector(0, 0, 0, mB0)
# 4-momenta of muons, first in dimuon rest frame which are then boosted
# using p4Jpsi to B0 rest frame
pMu = daughterMomentum(mMuMu, mMuPlus, mMuMinus)
pMuPlus = TLorentzVector()
pMuMinus = TLorentzVector()
pPi = TLorentzVector()
pK = TLorentzVector()
pMuPlus.SetPxPyPzE(pMu * sqrt(1 - cosTheta1 * cosTheta1), 0,
pMu * cosTheta1, sqrt(mMuPlus * mMuPlus + pMu * pMu))
pMuMinus.SetPxPyPzE(-pMu * sqrt(1 - cosTheta1 * cosTheta1),
0, -pMu * cosTheta1,
sqrt(mMuMinus * mMuMinus + pMu * pMu))
pMuPlus.Boost(p4Jpsi.BoostVector())
pMuMinus.Boost(p4Jpsi.BoostVector())
# Now kaon and pion to finish
ppK = daughterMomentum(m23, mK, mPi)
pz = ppK * cosTheta2
pT = ppK * sqrt(1 - cosTheta2 * cosTheta2)
py = -pT * sin(phi)
px = -pT * cos(phi)
pK.SetPxPyPzE(px, -py, -pz, sqrt(mK * mK + ppK * ppK))
pPi.SetPxPyPzE(-px, py, pz, sqrt(mPi * mPi + ppK * ppK))
pK.Boost(p4Kpi.BoostVector())
pPi.Boost(p4Kpi.BoostVector())
return pMuPlus, pMuMinus, pPi, pK
def mcjetmatch(lmc, jet_px, jet_py, jet_pz, jet_en, drmax):
#lmc = TLorentzVector()
#lmc.SetPxPyPzE( amc_px, amc_py, amc_pz, amc_en )
aeta = lmc.Eta()
aphi = lmc.Phi()
n = len(jet_px)
for ijet in range(0, n):
ljet = TLorentzVector()
ljet.SetPxPyPzE( jet_px[ijet], jet_py[ijet], jet_pz[ijet], jet_en[ijet] )
if DeltaR( aeta, aphi, ljet.Eta(), ljet.Phi() ) < drmax:
return True
return False
def fourmomentum(gen):
"""Returns the four-momentum representation of a particle."""
Px = gen.pt() * math.cos(gen.phi())
Py = gen.pt() * math.sin(gen.phi())
Pz = gen.pt() * math.sinh(gen.eta())
M = gen.mass()
c = 1
P = math.sqrt(Px**2 + Py**2 + Pz**2)
E = math.sqrt(P**2 * c**2 + M**2 * c**4)
pVec = TLorentzVector()
pVec.SetPxPyPzE(Px, Py, Pz, E)
return pVec
def findMinDr_track(aTrack, tracks, threshold):
drmin = 10
idx = -1
matchingTrack = None
match = False
if aTrack.pt() > 0:
for itrack, track in enumerate(tracks):
if not passesPreselection_basic_track(track): continue
if not track.charge() * aTrack.charge() > 0: continue
if not abs(track.pt() - aTrack.pt()) / aTrack.pt() < 0.2: continue
if not abs(track.eta() - aTrack.eta()) < 0.1: continue
if not abs(deltaPhi(track.phi(), aTrack.phi())) < 1.57: continue
aTrackTlv = TLorentzVector()
aTrackTlv.SetPxPyPzE(aTrack.px(), aTrack.py(), aTrack.pz(),
aTrack.pt() * np.cosh(aTrack.eta()))
trkTlv = TLorentzVector()
trkTlv.SetPxPyPzE(track.px(), track.py(), track.pz(),
track.pt() * np.cosh(track.eta()))
dr = trkTlv.DeltaR(aTrackTlv)
if dr < drmin:
drmin = dr
idx = itrack
matchingTrack = track
if drmin < threshold: match = True
return match, idx, drmin, matchingTrack
def momentum_aftr_boost(df, args): #args must have 4 elements xyzt or pxpypzE
px, py, pz = getXYZ(df, args)
E = DfToNp(df[[args[3]]].dropna(axis=0))
l = TLorentzVector()
with np.nditer([px, py, pz, E, None, None, None, None]) as it:
for pi, pj, pk, el, pm, pn, po, eq in it:
l.SetPxPyPzE(pi, pj, pk, el)
bi = pi / el
l.Boost(-bi, 0, 0)
pm[...] = l.Px()
pn[...] = l.Py()
po[...] = l.Pz()
eq[...] = l.E()
return (it.operands[4], it.operands[5], it.operands[6], it.operands[7])
def IsMuonsGhosts(self, entry_number, entry, prev_muons):
"""
Check if muon angls between current candidate
and previous one are not too close
Returns:
Bool
"""
mu1 = TLorentzVector()
mu2 = TLorentzVector()
mu1.SetPxPyPzE(getattr(entry, self.daughter_leafs[0] + '_PX'),
getattr(entry, self.daughter_leafs[0] + '_PY'),
getattr(entry, self.daughter_leafs[0] + '_PZ'),
getattr(entry, self.daughter_leafs[0] + '_PE'))
mu2.SetPxPyPzE(getattr(entry, self.daughter_leafs[1] + '_PX'),
getattr(entry, self.daughter_leafs[1] + '_PY'),
getattr(entry, self.daughter_leafs[1] + '_PZ'),
getattr(entry, self.daughter_leafs[1] + '_PE'))
if entry_number == 1:
prev_muons.append(mu1)
prev_muons.append(mu2)
return False
else:
deltaThetaMu1 = prev_muons[0].Angle(mu1.Vect())
deltaThetaMu2 = prev_muons[1].Angle(mu2.Vect())
if deltaThetaMu1 > 0.9999 and deltaThetaMu2 > 0.9999:
prev_muons[0] = mu1
prev_muons[1] = mu2
return True
prev_muons[0] = mu1
prev_muons[1] = mu2
return False
def OffMissingET(jets, electrons, muons, MET):
""" Calculate the MissingET from jets, electrons and muons """
#Define TLorentzVector for jets, electrons and muons
met_j = TLorentzVector()
met_e = TLorentzVector()
met_mu = TLorentzVector()
## The x and y components must be with (-1)
MET_jX = 0
MET_jY = 0
for j in jets:
MET_jX = j.P4().Px() + MET_jX
MET_jY = j.P4().Py() + MET_jY
met_j.SetPxPyPzE(-MET_jX, -MET_jY, 0, 0)
MET_eX = 0
MET_eY = 0
for e in electrons:
MET_eX = e.P4().Px() + MET_eX
MET_eY = e.P4().Py() + MET_eY
met_e.SetPxPyPzE(-MET_eX, -MET_eY, 0, 0)
MET_mX = 0
MET_mY = 0
for m in muons:
MET_mX = m.P4().Px() + MET_mX
MET_mY = m.P4().Py() + MET_mY
met_mu.SetPxPyPzE(-MET_mX, -MET_mY, 0, 0)
##sum of the vector components
offmet = met_j + met_e + met_mu
for m in MET:
m.MET = abs(offmet.Mag())
m.Phi = offmet.Phi()
return MET
def boost(df, args): #args must have 4 elements xyzt or pxpypzE
px, py, pz = getXYZ(df, args)
E = DfToNp(df[[args[3]]].dropna(axis=0))
l = TLorentzVector()
with np.nditer([px, py, pz, E, None, None, None, None]) as it:
for pi, pj, pk, el, pm, en, phi, cost in it:
l.SetPxPyPzE(pi, pj, pk, el)
bi = pi / el
bj = pj / el
bk = pk / el
l.Boost(-bi, -bj, -bk)
pm[...] = l.Px()
en[...] = l.E()
phi[...] = l.Phi()
cost[...] = l.CosTheta()
return (it.operands[4], it.operands[5], it.operands[6], it.operands[7])
def cosThetaBoost(pa, ida, pb, idb, doflip=False): # http://xrootd.slac.stanford.edu/BFROOT/www/doc/workbook_backup_010108/analysis/analysis.html # A useful quantity in many analyses is the helicity angle. # In the reaction Y . X . a + b, the helicity angle of # particle a is the angle measured in the rest frame of the # deidaying parent particle, X, between the direction of the # deiday daughter a and the direction of the grandparent particle Y. pTmp = pa+pb; # this is the mumu system (Z) 4vector ZboostVector = pTmp.BoostVector() # this is the 3vector of the Z p = TLorentzVector(0,0,-1,1) # this is the muon 4vector if (ida>0): p.SetPxPyPzE(pa.Px(),pa.Py(),pa.Pz(),pa.E()) else: p.SetPxPyPzE(pb.Px(),pb.Py(),pb.Pz(),pb.E()) p.Boost(-ZboostVector) # boost p to the Ditop CM (rest) frame cosThetaB = p.Vect()*pTmp.Vect()/(p.P()*pTmp.P()) if(ySystem(pa,pb)<0. and doflip): cosThetaB *= -1. # reclassify ??? return cosThetaB
def position_aftr_boost(df, args): #args must have 4 elements xyzt or pxpypzE
px, py, pz = getXYZ(df, args)
E = DfToNp(df[[args[3]]].dropna(axis=0))
l = TLorentzVector()
with np.nditer([px, py, pz, E, None, None, None]) as it:
for pi, pj, pk, el, x, y, z in it:
l.SetPxPyPzE(pi, pj, pk, el)
#p = math.hypot(pi,pj)
#p = math.hypot(pk,p)
bi = pi / el
bj = pj / el
bk = pk / el
#print(b)
l.Boost(-bi, -bj, -bk)
z[...] = l.X()
y[...] = l.Y()
z[...] = l.Z()
return (it.operands[4], it.operands[5], it.operands[6])
def Analyze(n, event):
nphot = 0
for j in range(event.E.size()):
wgt = event.wgt[j]
nphot += wgt
### all photons
histos["h_E"].Fill(event.E[j], wgt)
p = TLorentzVector()
p.SetPxPyPzE(event.px[j], event.py[j], event.pz[j], event.E[j])
v = p.Vect()
vxHat = (v.X() / v.Mag())
vyHat = (v.Y() / v.Mag())
vzHat = (v.Z() / v.Mag())
r1 = TVector3(R1 * vxHat, R1 * vyHat, R1 * vzHat)
histos["h_R1_x"].Fill(r1.X(), wgt)
histos["h_R1_y"].Fill(r1.Y(), wgt)
histos["h_R1_xy"].Fill(r1.X(), r1.Y(), wgt)
histos["h_R1_xE"].Fill(r1.X(), event.E[j], wgt)
histos["h_R1_yE"].Fill(r1.Y(), event.E[j], wgt)
r2 = TVector3(R2 * vxHat, R2 * vyHat, R2 * vzHat)
histos["h_R2_x"].Fill(r2.X(), wgt)
histos["h_R2_y"].Fill(r2.Y(), wgt)
histos["h_R2_xy"].Fill(r2.X(), r2.Y(), wgt)
histos["h_R2_xE"].Fill(r2.X(), event.E[j], wgt)
histos["h_R2_yE"].Fill(r2.Y(), event.E[j], wgt)
xVtx = event.vx[j]
yVtx = event.vy[j]
zVtx = event.vz[j]
histos["h_xVtx"].Fill(xVtx, wgt)
histos["h_yVtx"].Fill(yVtx, wgt)
histos["h_zVtx"].Fill(zVtx, wgt)
histos["h_xyVtx"].Fill(xVtx, yVtx, wgt)
histos["h_photons"].Fill(nphot)
return nphot