Sll Runs 1-6 analysis
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sll Runs 1-6 analysis Requires special do-it-yourself modified B->Xsll skim for events with optimal PID selectors, otherwise have to wait until Summer 2009 ~300000 batch jobs run at SLAC (Sep-Dec) Primary skim over data, generic MC, signal MC

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sll Runs 1-6 analysis

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Sll runs 1 6 analysis

  • sll Runs 1-6 analysis

    • Requires special do-it-yourself modified B->Xsll skim for events with optimal PID selectors, otherwise have to wait until Summer 2009

      • ~300000 batch jobs run at SLAC (Sep-Dec)

        • Primary skim over data, generic MC, signal MC

        • Secondary data skim with no lepton PID and tight deltaE, mES cuts in order to characterize directly from data the pion-as-lepton misid bkgd

      • Finished over holiday break

    • The changed momentum acceptance of the new lepton selectors necessitated re-training all event selection trees

      • Finished this week

      • Inputs, architecture, etc. previously shown


Sll runs 1 6 analysis

  • NN and trees trained on R18 data did not optimally select events

    • table below shows ratio of best R18 BDT sensitivity to best R18 NN sensitivity for R22 data


Sll runs 1 6 analysis

  • 24 retrained trees required

    • bb, udsc ; e, mu ; 2 m(l+l-) bins ; 3 mHad bins

    • http://babar-hn.slac.stanford.edu:5090/hn/aux/kflood/slltrees_r22/jun1608/sll_evtsel_r22.html

    • http://babar-hn.slac.stanford.edu:5090/hn/aux/kflood/slltrees_r22/jun1608/plots_jan0709/tree_output

elec, m(ll)<m(J/psi), mHad<1.1


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