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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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Check stripping cuts #7

Closed jackfrost373 closed 5 years ago

jackfrost373 commented 5 years ago

Proton has higher low-momentum cut. Check if this is indeed already happens in the stripping. Also, ensure hasRICH==1 for all final-state particles (proton, kaon, pion), to ensure good PID performance.

cpawley commented 5 years ago

Per http://lhcbdoc.web.cern.ch/lhcbdoc/stripping/config/stripping29r2/charm/strippinglambdacforpromptcharm.html

Proton

  | (    ( PT           > 250  * MeV ) &     ( CLONEDIST    > 5000      ) &     (  TRGHOSTPROB  < 0.5       ) &     in_range ( 2         , ETA , 4.9        ) &    in_range ( 10 * GeV  , P   , 150 * GeV ) &     HASRICH                      &    ( MIPCHI2DV()  > 9         )      )&( PROBNNp  > 0.1 )
-- | --

Kaon

  | (    ( PT          > 250 *  MeV ) &     ( CLONEDIST   > 5000      ) &     ( TRGHOSTPROB  < 0.5       ) &    in_range ( 2          , ETA , 4.9       )  &    in_range ( 3.2 * GeV  , P   , 150 * GeV ) &    HASRICH                      &    ( MIPCHI2DV()  > 9        )    )&(  PROBNNk  > 0.1 )
-- | --

Pion

  | (    ( PT          > 250 *  MeV ) &     ( CLONEDIST   > 5000      ) &     ( TRGHOSTPROB  < 0.5       ) &    in_range ( 2          , ETA , 4.9       )  &    in_range ( 3.2 * GeV  , P   , 150 * GeV ) &    HASRICH                      &    ( MIPCHI2DV()  > 9        )    )&(  PROBNNpi > 0.1 )
-- | --
cpawley commented 5 years ago

Simon to do 1-20 GEV in 100 bins for signal and MC to show this is happening