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Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,J.,Berryhill,Analysis Tools Workshop,09/30/05,*,Extreme Penguins:Tools requirements at the analysis frontier,Jeffrey,Berryhill,(UCSB),for the,Radiative,Penguin AWG,BaBar,Analysis Tools Workshop,September 30,2005,Analysis Tools and“Extreme”Analyses,Tool development does not occur in a vacuum,Necessity is the mother of invention,Development driven by analyses with strongest motivation,to improve standard methods(“,extreme analyses,”),because it is a limiting factor/systematic OR,because it is a high priority/high manpower result,Extreme analysts:*the*natural source of manpower for tools groups,If you have,extremal,needs why are you not part of a tools group?,Complaining is evidence of the desire to volunteer,2,Extreme,Muon,ID,B,K(*),mm,requires tight PID requirements,(2-4%fake rate),to suppress 50X background from B,K(*),pp,AND,Highest efficiency possible to measure,BF 10,-6,Close interaction between analysts and PID group to,continuously improve,muon,selection(neural net based selector,muNNTight,),Next step:,take maximal advantage of,LSTs,retuned matching chi2,We are very happy,with PID killing!,See J.,Hollars,talk,tomorrow,3,Extreme,Pion,ID,Rare b,d,g,penguin decays have large(40X)peaking background from,b,s,g,decays (Ex:B,0,K*,0,g,mimics B,0,r,0,g,),Requires efficient,pion,ID with low K fake rate,Run 4 analysis,improved upon,pionLHVeryTight,by adding,consistency cut for#of,photons in DIRC,80%,eff,.and 1-3,GeV,Does anyone else care about these?,8,Other Extremes,Combinatorics in reconstruction,Exclusive reconstruction of B,K+n,p+g,or,K+n,p+,ll,n=1-4,is computationally very expensive;can efficiency be improved?,Photon energy resolution improvement,Will improve S/B in,D,E for rare decays,EMC edge correction helped!,Modelling of fragmentation of Xs,Xd,Limiting systematic for sum-of-exclusive analysis of,b,s,g,b,sll,Control sample studies in BRECO samples or,charmonium,samples,may be helpful,9,Other Extremes,Kaon,tracking,Precision tracking studies typically look at only,pions,Dedicated control sample of,kaons,would be useful for precisely,constraining,tracking efficiency and CP asymmetry,systematics,Isospin,asymmetry,High precision measurements in K*,g,and sum-of-exclusive b,s,g,B,0,/B,+,production ratio already an important systematic;can it be,Improved?,10,Charmless,Wish List,Incremental improvement in,hadron,PID,Common supported recipe for,hadron,PID,systematics,Incremental improvement in,p,0,systematic error,11,Conclusions,The,radiative,penguin group has a variety of analysis concerns which,are limiting factors for their analysis performance,Optimal background suppression for rare decays,Precision efficiency,resolution and background subtraction in,bs,g,Primary concerns:,PID,Neutrals(single photon),Secondary concerns:tagging,vertexing,tracking,BRECO,We should be contributing more manpower to improve the tools,12,