Subleading shape functions in B→Xuℓν̄ and the determination of |Vub|
نویسندگان
چکیده
منابع مشابه
Subleading Shape Functions and the Determination
It is argued that the dominant subleading shape-function contributions to the endpoint region of the charged-lepton energy spectrum in B → Xu l ν decays can be related in a model-independent way to an integral over the B → Xsγ photon spectrum. The square root of the fraction of B → Xu l ν events with chargedlepton energy above E0 = 2.2GeV can be calculated with a residual theoretical uncertaint...
متن کاملSubleading Shape Functions and the Determination of |v Ub |
It is argued that the dominant subleading shape-function contributions to the endpoint region of the charged-lepton energy spectrum in B → Xu l ν decays can be related in a model-independent way to an integral over the B → Xsγ photon spectrum. The square of the fraction of B → Xu l ν events with charged-lepton energy above E0 = 2.2GeV can be calculated with a residual theoretical uncertainty fr...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 2002
ISSN: 0370-2693
DOI: 10.1016/s0370-2693(02)02444-9