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umd-lhcb / plot_scripts

LHCb analysis plotting and table-making utilities
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Branches to be renamed in Phoebe ntuples #5

Closed manuelfs closed 1 year ago

manuelfs commented 4 years ago

As @yipengsun suggested, we can use this issue to keep a list of the variables that we use from Phoebe's ntuples, what name we'd like them to have, and any explanation of the variable as we find it. Let us use the format that babymaker will use, for instance

FFweight: w_ff
# Some MC weight, need to find out what it contains
mcWeight: w_mc
# Missing mass squared in GeV
m_nu1: mm2

My general conventions for branch naming, still to be discussed, are:

Particle names are defined in reco_Dst.py. For instance, Phoebe's Y_P would be b0_p for us, or pislow_PT would be spi_pt.

Hum, I wonder if we should rename the slow pion pis_ so that it is easier to search in the string.

afernez commented 4 years ago

This comment will need to be edited. I'll note the variable types (notably, most variables are doubles, but many are really acting as booleans or ints). I'll also make notes of relevant lines in Phoebe's AddB.C defining variables, if this is available. I'll group variables based on whether they were used to select components, used for cuts/to select control samples, or used in weight calculations; these will inevitably intersect, and I'll just write each variable once. Of course, anyone is free to edit the names I choose for the variables or my (mis)understanding of its meaning.

Selecting components

DstIDprod: dst_id_prod   # =D0_ID*piminus_ID?, double, 2534
IDprod: id_prod   # =D0_ID*muplus_ID?, double, 2533
muPID: mu_pid   # (is MC and correct TRUEID) or (isMuon and PIDmu > 2)?, float, 2540
flagDstSB: flag_dst_sb   # part of D* mass sideband, double, 4296 matches line 2305 in redoHistos_Dst.C
isData: is_data   # event is data, double, 2439
totweight: w_tot   # weight used for comb bkgd and misID, double, affected by many lines
flagtaumu: flag_tau   # MC semi-tauonic B decay, double, 2743-2746
JustDst: just_dst   # D* from B, not D**, double, 2814
DstOk: dst_ok   # ?, double, 2547 (with comment about variable use)
Btype: b_type   # type of B meson (B0==511, B-==521, B0s==531), int
flagBmu: flag_mu   # MC semi-muonic B decay, double, 2742-2747
Y_BKGCAT: b_bkg_cat   # ?, int
Dststtype: dss_type   # type of D** (D1+==10413, D10==10423, D2*+==415, D2*0==425, Ds2*==435, D1'+==20413, D1'0==20423, Ds1'==10433?), int, 2822-2831
ishigher: is_2pi   # 2S D** instead of 1P D**? Phoebe says checks if 2pi cocktail member, bool, 3255-3277
mm_mom: mm_dst_mom   # missing mass between D* and mother?, double, 3136-3142
Dst_2010_minus_MC_MOTHER_ID: dst_mom_id  # ID of charged D* mother, int
flagTauonicD: flag_two_d_tau   # semitauonic with tau from 431 (what particle is this?) and assumedly with two D mesons, double, 2791
flagDoubleD: flag_two_d_mu   #  MC semimuonic with mu from 411 or 421 or 431 and two D mesons, double, 2757

Control Sample Selection, Cuts

TODO

Weight calculations

TODO

Other

ISOnum: iso_num   # ?
yipengsun commented 4 years ago

I've added all Selecting components in our step 2 ntuples.

yipengsun commented 4 years ago

Related issue: umd-lhcb/lhcb-ntuples-gen#50.

yipengsun commented 1 year ago

This has been implemented in lhcb-ntuple-gen. Closed.