QCD-Factorization of inclusive B decays and |Vub|
نویسندگان
چکیده
منابع مشابه
QCD-Factorization of inclusive B decays and |Vub | ∗
Recent progress in the theoretical description of inclusive B → Xu l − ν̄ decays in the shape-function region is reported. Finite moments of the shape function are related to HQET parameters. Event fractions for several experimental cuts are presented, with a particular emphasis on the hadronic variable P+ = EH − |~ PH |. The aim of this talk is to introduce the P+ spectrum, to compare it to the...
متن کاملB?J/?(?,K) Decays within QCD Factorization Approach
We used QCD factorization for the hadronic matrix elements to show that the existing data, in particular the branching ratios BR ( ?J/?K) and BR ( ?J/??), can be accounted for this approach. We analyzed the decay within the framework of QCD factorization. We have complete calculation of the relevant hard-scattering kernels for twist-2 and twist-3. We calculated this decays in a special scale ...
متن کاملInclusive semileptonic B decays: |Vcb | and |Vub|
With the discovery of CP violation in the B mesons, and the precise measurement of the angle β [1] of the Unitarity Triangle (UT), the experimental effort focus on the measurements of other parameters to over-constraint the Cabibbo-KobayashiMaskawa (CKM) matrix [2]. In particular the information on the side Rb opposite to the angle β is crucial to test the standard model prediction for CP viola...
متن کاملExclusive and Semi-inclusive B Decays in QCD Factorization
Applications of QCD factorization to B → φK, charmless B → V V , B → J/ψK(K∗) and semi-inclusive decays B →MX are discussed.
متن کامل|Vub| Determinations from Inclusive Semileptonic B Decays
|Vcb| and |Vub| are two of the fundamental constants of the Standard Model. They need to be determined by experimental measurements. These can be done with leptonic, semileptonic, or nonleptonic decays of B mesons. In this talk I will discuss the determinations of |Vcb| and |Vub| from inclusive semileptonic B decays. An observable in these processes is schematically related to |Vcb| or |Vub| in...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 2005
ISSN: 0920-5632
DOI: 10.1016/j.nuclphysbps.2005.01.054