Inclusive semileptonic B decays at BABAR

被引:0
作者
Langenegger, Urs [1 ]
机构
[1] Stanford Univ, Stanford Linear Accelerator Ctr, Stanford, CA 94309 USA
来源
EUROPEAN PHYSICAL JOURNAL C | 2004年 / 33卷
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中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We report updates on two analyses of inclusive semileptonic B decays based on a dataset of 89 million B (B) over bar events recorded with the BABAR detector at the (sic)(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) over bar meson. In the first analysis, the measurement of the first and second moment of the hadronic mass distribution in Cabibbo-favored (B) over bar -> X(c)l (nu) over bar. decays allows for the determination of the nonperturbative parameters (Lambda) over bar and lambda(1) of Heavy Quark Effective Theory (HQET) and vertical bar V(cb)vertical bar. In the second analysis, the hadronic mass distribution is used to measure the inclusive charmless semileptonic branching fraction and to determine vertical bar V(ub)vertical bar.
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页码:S207 / S209
页数:3
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