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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
9
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pubmed:dateCreated |
2007-3-15
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pubmed:abstractText |
We report the results of a study of the exclusive charmless semileptonic decay, B0-->pi(-l)(+nu), undertaken with approximately 227 x 10(6) BB pairs collected at the Upsilon(4S) resonance with the BABAR detector. The analysis uses events in which the signal B decays are reconstructed with an innovative loose neutrino reconstruction technique. We obtain partial branching fractions in 12 bins of q2, the momentum transfer squared, from which we extract the f + (q2) form-factor shape and the total branching fraction B(B0-->pi(-l)(+nu))=(1.46+/-0.07stat+/-0.08syst) x 10(-4). Based on a recent unquenched lattice QCD calculation of the form factor in the range q2>16 GeV2, we find the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element /Vub/ to be (4.1+/-0.2stat +/- 0.2syst(+0.6)-0.4_{FF}) x 10(-3), where the last uncertainty is due to the normalization of the form factor.
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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 |
Mar
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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:KochHH,
pubmed-author:SofferAA,
pubmed-author:ChenCC,
pubmed-author:ZiaS HSH,
pubmed-author:WalkerDD,
pubmed-author:SerranoJJ,
pubmed-author:EckmannRR,
pubmed-author:WagnerS RSR,
pubmed-author:LuCC,
pubmed-author:FreyRR,
pubmed-author:LundPP,
pubmed-author:LisHH,
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:KaganHH,
pubmed-author:ClausRR,
pubmed-author:PayneD JDJ,
pubmed-author:HaireMM,
pubmed-author:AngeliniCC,
pubmed-author:ChauveauJJ,
pubmed-author:LegendreMM,
pubmed-author:AlbertJJ,
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:BabaM LML,
pubmed-author:RitchieJ LJL,
pubmed-author:SaccoRR,
pubmed-author:ChanGG,
pubmed-author:MartinE CEC,
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,
pubmed-author:SchottGG,
pubmed-author:HillE JEJ,
pubmed-author:Del ReDD,
pubmed-author:LombardiLL
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