Study Of Exclusive Charmless Semileptonic B Decays And Vertical Bar V-Ub Vertical Bar

Adam N E,Alexander J P,Berkelman K,Cassel D G,Duboscq J E,Ehrlich R,Fields L, Gibbons L,Gray R,Gray S W,Hartill D L,Heltsley B K,Hertz D,Jones C D,Kandaswamy J,Kreinick D L,Kuznetsov V E,Mahlke-Krüger H,Meyer T O,Onyisi P U E,Patterson J R,Peterson D,Pivarski J,Riley D, Ryd A,Sadoff A J,Schwarthoff H,Shi X,Stroiney S,Sun W M,Wilksen T,Weinberger M,Athar S B,Patel R,Potlia V,Yelton J,Rubin P,Cawlfield C,Eisenstein B I,Karliner I,Kim D,Lowrey N,Naik P,Selen M,White E J,Wiss J,Mitchell R E,Shepherd M R,Besson D,Pedlar T K,Cronin-Hennessy D,Gao K Y,Hietala J,Kubota Y,Klein T,Lang B W,Poling R,Scott A W,Smith A,Zweber P,Dobbs S,Metreveli Z,Seth K K,Tomaradze A,Ernst J,Ecklund K M, Severini H,Love W, Savinov V,Aquines O,Li Z,Lopez A,Mehrabyan S,Mendez H,Ramirez J,Huang G S,Miller D H, Pavlunin V,Sanghi B,Shipsey I P J,Xin B,Adams G S,Anderson M,Cummings J P,Danko I,Hu D,Moziak B,Napolitano J,He Q,Insler J,Muramatsu H,Park C S,Thorndike E H,Yang F,Coan T E,Gao Y S,Artuso M,Blusk S,Butt J,Li J,Menaa N,Mountain R,Nisar S,Randrianarivony K,Sia R,Skwarnicki T,Stone S,Wang J C,Zhang K,Bonvicini G,Cinabro D,Dubrovin M,Lincoln A,Asner D M,Edwards K W, Briere R A,Ferguson T,Tatishvili G,Vogel H,Watkins M E,Rosner J L, Null Null

PHYSICAL REVIEW LETTERS（2007）

引用 86|浏览40

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摘要

We study semileptonic B decay to the exclusive charmless states pi, rho/omega, eta, and eta(') using the 16 fb(-1) CLEO Upsilon(4S) data sample. We find B(B-0 ->pi(-)l(+)nu) = (1.37 +/- 0.15(stat) +/- 0.11(sys)) x 10(-4) and B(B-0 -> rho(-)l(+)nu) = (2.93 +/- 0.37(stat) +/- 0.37(sys)) x 10(-4) and find evidence for B+ -> eta(')l(+)nu, with B(B+ -> eta(')l(+)nu)=(2.66 +/- 0.80(stat) +/- 0.56(sys)) x 10(-4). From our B -> pi l nu rate for q(2) > 16 GeV2 and lattice QCD, we find vertical bar V-ub vertical bar = (3.6 +/- 0.4(stat) +/- 0.2(syst-0.4thy)(+0.6))x10(-3).

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physics,lattice qcd,multidisciplinary

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