Contents of root-tuples                                                                        Kenji Hamano

Last modified : Jul 13, 2005                                              Back to Home Back to privious page

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Contents of root-tuples

Event block

     nChgTrk = number of ChargedTracks
     nGTL = number of GoodTrackLoose
     nPhoton = munber of single EMC bumps
     nGamma = number of gammas from CalorNeutral list with E_gamma > 80 MeV
     isABhabha = Bhabha event
     nDlCand = number of Dl candidate

     MCdecModB1 = decay mode of one B
     MCdecModB2 = decay mode of the other B

MC Truth block

     nMc = number of candidate in the MCTruthList
     MCpLab
     MCmass
     MCthetaLab
     MCphiLab
     MCid = Lund ID of the candidate
     MCdecMode = decay mode of the candidate => see MCdecModB1
     MCmoth = show the n-th candidate is the mother
     MCmomId = Lund ID of the mother
     MCnDau = number of daughters
     MCx = x coordinate of the decay vertex
     MCy = y coordinate of the decay vertex
     MCz = x coordinate of the decay vertex

Dlnu block

     nDl = number of selected Dl candidiate

     trueD = D
     trueDhad = D or Dstar
     trueDstar = Dstar
     trueDFromB = D from B
     trueDlnu = D and l from the same B and the D has 3 daughters.
     trueDlhadFromB = Dhadron from B
     trueDlstarFromB = Dstar from B
     trueLepFromB = lepton originated from B including b->D->X+l, etc.
     trueLepFromSameB = lepton brom the same B as Dhadron
     trueDhadlnu = Dhadron and l from the same B
     trueDstarlnu = Dsatr and l from the same B
     mcDirectLepFromB = lepton directly came from B
     mcLepID = lepton ID
     mcLepBID = Id of the mother B of the lepton
     trueBDecMod = B decay mode

     DhadType = type of Dhadron; D* =>1, D =>0
     DhadMode = Lund ID of Dhadron (D* or D)
         D_plus => +411
         D_minus => -411
         D0 => +421
         anti_D0 => -421
         D_star_plus => +413
         D_star_minus => -413
         D_star0 => +423
         anti_D_star0 => -423
     DDecayMode = D0/D+ decay mode
         1 => D0ToKpi
         2 => D0ToK3pi
         3 => D0ToKpipi0
         4 => D0ToKspipi
         5 => DchToKpipi
         6 => DchToKspipi0
         7 => DchToKspi
     DhadChrg = Charge of D hadron
     DChrg = Charge of D
     DlLepChrg = Dlnu side lepton charge
     AddLepChrg = AddLep side lepton (electron + muon) charge
     AddLepType = AddLep side lepton type: electron -> 1, muon -> 2
     numAddElec = number of non-overlap AddLep electrons per candidate
     numADDMu = number of non-overlap AddLep muons per candidate
     numAddLep = number of non-overlap AddLep leptons per candidate
     DhadMass = Dhadron (D* or D) mass
     DMass = D mass
     DhadMom = Dhadron (D* or D) momentum in CM
     DMom = D momentum in CM
     DlLeptMom = Dl siide lepton momentum in CM
     AddLepMom = AddLep lepton(electron+muon) momentum in CM
     DLcosBY = cosTheta_ B-Dl

     DlThrust = thrust of Dl candidate
     DlThrustAx = x component of thrust axis of Dl
     DlThrustAy = y component of thrust axis of Dl
     DlThrustAz = z component of thrust axis of Dl
     nonDlThrust = thrust of particles and gamma other than Dl
     nonDlThrustAx = x component of thrust axis
     nonDlThrustAy = y component of thrust axis
     nonDlThrustAz = z component of thrust axis

One BToDlnu candidate consists of one Dhadron and one Lepton.
Dhadron may be D* (D*+, D*-, D*0, or D*0bar) or D (D+, D-, D0, or D0bar).

DhadMode, DDecayMode, tagLepChrg, and recoLepChrg are useful to distinguish the types of processes.
DhadType, DhadChrg, DChrg should be consistent with DhadMode and DDecayMode.

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