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jackfrost373 / LHCb_Xic_production

Honours programme analysis at MSP for MSP honours students, measuring the production ratio of Xi_c over L_c in the LHCb experiment.
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use DecayTreeFitter #6

Closed jackfrost373 closed 5 years ago

jackfrost373 commented 5 years ago

Use the DecayTreeFitted (DTF) variables for IPchi2 and lifetime, for the comparison plots. These are much more powerful, due to the re-fit with vertex constraints.

jackfrost373 commented 5 years ago

(Already in the nTuples)

cpawley commented 5 years ago

Simon has plot of DTF_CTau -> needs new axis labels (!). @jackfrost373 to provide with units.

jackfrost373 commented 5 years ago

I found evidence in the LHCb software that [ctau] from the TupleToolDecayTreeFitter is indeed in mm, as we suspected.

jackfrost373 commented 5 years ago

(also, the normal 'lifetime' is in [ns]).