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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
17
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pubmed:dateCreated |
2006-12-12
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pubmed:abstractText |
The photon spectrum in B-->Xs gamma decay, where Xs is any strange hadronic state, is studied using a data sample of 88.5 x 10(6) e+ e- --> Upsilon(4S) --> BB decays collected by the BABAR experiment at the Stanford Linear Accelerator Center. The partial branching fraction, DeltaB(B --> Xs gamma) = (3.67+/-0.29(stat)+/-0.34(syst)+/-0.29(model)) x 10(-4), the first moment <E gamma> = 2.288+/-0.025+/-0.017+/-0.015 GeV, and the second moment E2(gamma) = 0.0328+/-0.0040+/-0.0023+/-0.0036 GeV2 are measured for the photon energy range 1.9 GeV < E gamma < 2.7 GeV. They are also measured for narrower E gamma ranges. The moments are then fit to recent theoretical calculations to extract the heavy quark expansion parameters m(b) and mu2(pi) and to extrapolate the partial branching fraction to E gamma > 1.6 GeV. In addition, the direct CP asymmetry A(CP)(B-->X(s+d gamma) is measured to be -0.110+/-0.115(stat)+/-0.017(syst).
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pubmed:language |
eng
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pubmed:journal |
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pubmed:status |
PubMed-not-MEDLINE
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pubmed:month |
Oct
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pubmed:issn |
0031-9007
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pubmed:author |
pubmed-author:SchubertJJ,
pubmed-author:WilsonJ RJR,
pubmed-author:LUGG,
pubmed-author:SuzukiKK,
pubmed-author:BurkeJ PJP,
pubmed-author:GeorgeK AKA,
pubmed-author:WilsonM GMG,
pubmed-author:ChenSS,
pubmed-author:PetersKK,
pubmed-author:PeraFF,
pubmed-author:WandSS,
pubmed-author:BrandtTT,
pubmed-author:De GrootNN,
pubmed-author:ChengBB,
pubmed-author:KochHH,
pubmed-author:SofferAA,
pubmed-author:BrownC MCM,
pubmed-author:ChenCC,
pubmed-author:ZiaS HSH,
pubmed-author:WalkerDD,
pubmed-author:EckmannRR,
pubmed-author:WagnerS RSR,
pubmed-author:LuCC,
pubmed-author:BaasUU,
pubmed-author:FreyRR,
pubmed-author:LundPP,
pubmed-author:WilliamsJ CJC,
pubmed-author:BlancFF,
pubmed-author:TeodorescuLL,
pubmed-author:MarksJJ,
pubmed-author:ChanLL,
pubmed-author:LynchGG,
pubmed-author:FryJ RJR,
pubmed-author:TaylorFF,
pubmed-author:KhanAA,
pubmed-author:SeidelCC,
pubmed-author:MoriiMM,
pubmed-author:SchmittR GRG,
pubmed-author:KaganHH,
pubmed-author:ClausRR,
pubmed-author:CapraRR,
pubmed-author:PayneD JDJ,
pubmed-author:HaireMM,
pubmed-author:AngeliniCC,
pubmed-author:ChauveauJJ,
pubmed-author:LegendreMM,
pubmed-author:AlbertJJ,
pubmed-author:WandHH,
pubmed-author:WrightD HDH,
pubmed-author:PaolucciPP,
pubmed-author:BrunetSS,
pubmed-author:OlsenJJ,
pubmed-author:WilsonR JRJ,
pubmed-author:ThompsonJ MJM,
pubmed-author:LiuHH,
pubmed-author:BernardDD,
pubmed-author:BianchiFF,
pubmed-author:EmerySS,
pubmed-author:RaoS VSV,
pubmed-author:ForthEE,
pubmed-author:OlivanJJ,
pubmed-author:WuJJ,
pubmed-author:BangH OHO,
pubmed-author:DavisC LCL,
pubmed-author:AhmedSS,
pubmed-author:SaleebFF,
pubmed-author:BonaMM,
pubmed-author:NealHH,
pubmed-author:WilliamsD CDC,
pubmed-author:KimHH,
pubmed-author:DavidPP,
pubmed-author:HopkinsD ADA,
pubmed-author:RitchieJ LJL,
pubmed-author:SaccoRR,
pubmed-author:ChanGG,
pubmed-author:EdwardsA JAJ,
pubmed-author:HamanoKK,
pubmed-author:CurrySS,
pubmed-author:BelliniFF,
pubmed-author:LuMM,
pubmed-author:ITOI YIY,
pubmed-author:SharmaVV,
pubmed-author:RizzoGG
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