1 / 3

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

will
Télécharger la présentation

sll Runs 1-6 analysis

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 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

  2. 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

  3. 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

More Related