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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
7
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pubmed:dateCreated |
2004-3-3
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pubmed:abstractText |
We report a measurement of the inclusive charmless semileptonic branching fraction of B mesons in a sample of 89 x 10(6) (-)BB events recorded with the BABAR detector at the Upsilon(4S) resonance. Events are selected by fully reconstructing the decay of one B meson and identifying a charged lepton from the decay of the other B meson. The number of signal events is extracted from the mass distribution of the hadronic system accompanying the lepton and is used to determine the ratio of branching fractions B((-)B-->X(u)lnu;)/B((-)B-->Xlnu;)=[2.06+/-0.25(stat)+/-0.23(syst)+/-0.36(theo)]x10(-2). Using the measured branching fraction for inclusive semileptonic B decays, we find B((-)B-->X(u)lnu;)=[2.24+/-0.27(stat)+/-0.26(syst)+/-0.39(theo)]x10(-3) and derive the Cabibbo-Kobayashi-Maskawa matrix element |V(ub)|=[4.62+/-0.28(stat)+/-0.27(syst)+/-0.48(theo)]x10(-3).
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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 |
Feb
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pubmed:issn |
0031-9007
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pubmed:author |
pubmed-author:AbeTT,
pubmed-author:AbeKK,
pubmed-author:WagnerGG,
pubmed-author:JohnsonJ RJR,
pubmed-author:BrownDD,
pubmed-author:WilsonM GMG,
pubmed-author:ChenSS,
pubmed-author:PetersKK,
pubmed-author:PeraFF,
pubmed-author:RoyJJ,
pubmed-author:WandSS,
pubmed-author:GeorgeSS,
pubmed-author:BrandtTT,
pubmed-author:De GrootNN,
pubmed-author:KochHH,
pubmed-author:SofferAA,
pubmed-author:BrownC MCM,
pubmed-author:WalshJJ,
pubmed-author:ZiaS HSH,
pubmed-author:EckmannRR,
pubmed-author:WagnerS RSR,
pubmed-author:LuCC,
pubmed-author:FreyRR,
pubmed-author:WilliamsJ CJC,
pubmed-author:KitayamaII,
pubmed-author:BlancFF,
pubmed-author:ChanLL,
pubmed-author:LavinDD,
pubmed-author:LynchGG,
pubmed-author:FryJ RJR,
pubmed-author:StarkJJ,
pubmed-author:TaylorFF,
pubmed-author:KhanAA,
pubmed-author:SeidelCC,
pubmed-author:MoriiMM,
pubmed-author:SchmittR GRG,
pubmed-author:McMahonSS,
pubmed-author:PayneD JDJ,
pubmed-author:HaireMM,
pubmed-author:AngeliniCC,
pubmed-author:ChauveauJJ,
pubmed-author:BrownC LCL,
pubmed-author:AlbertJJ,
pubmed-author:WrightD HDH,
pubmed-author:PaolucciPP,
pubmed-author:OlsenJJ,
pubmed-author:WilsonR JRJ,
pubmed-author:KoflerRR,
pubmed-author:BernardDD,
pubmed-author:BianchiFF,
pubmed-author:MacriMM,
pubmed-author:EmerySS,
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:ReidyJJ,
pubmed-author:NealHH,
pubmed-author:WilliamsD CDC,
pubmed-author:KimHH,
pubmed-author:LidMM,
pubmed-author:PerdueM LML,
pubmed-author:DavidPP,
pubmed-author:BabaM LML,
pubmed-author:RitchieJ LJL,
pubmed-author:JacksonFF,
pubmed-author:EdwardsA JAJ,
pubmed-author:LangerMM,
pubmed-author:BelliniFF,
pubmed-author:ITOI YIY,
pubmed-author:YangSS,
pubmed-author:VerkerkeWW,
pubmed-author:SharmaVV,
pubmed-author:RizzoGG,
pubmed-author:SchottGG,
pubmed-author:HillE JEJ,
pubmed-author:CalderiniGG,
pubmed-author:LewandowskiBB,
pubmed-author:SnyderAA,
pubmed-author:RicciardiSS
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