Semileptonic and rare B meson decays into a light pseudoscalar meson
نویسندگان
چکیده
منابع مشابه
Semileptonic and rare B meson decays into a light pseudoscalar meson
In the framework of a QCD relativistic potential model we evaluate the form factors describing the exclusive decays B → πlν and B → Kll. The present calculation extends a previous analysis of B meson decays into light vector mesons. We find results in agreement with the data, when available, and with the theoretical constraints imposed by the Callan-Treiman relation and the infinite heavy quark...
متن کاملSemileptonic B Meson Decays
We review some of the most important topics in the semileptonic decays of B mesons, with emphasis on recent results from CLEO and LEP. We discuss the current data samples, inclusive and exclusive semileptonic decay branching fractions, and form factor measurements in the context of HQET.
متن کاملExclusive Semileptonic and Rare B Meson Decays in QCD
We present first complete results for the semileptonic and rare radiative form factors of B mesons weak decay into a light vector meson (ρ, ω,K, φ) in the light-cone sum rule approach. The calculation includes radiative corrections, higher twist corrections and SU(3) breaking effects. The theoretical uncertainty is investigated in detail. A simple parametrization of the form factors is given in...
متن کاملSemileptonic decays of pseudoscalar mesons to scalar f0 meson
The transition form factors of Ds → f0lν, D → f0lν and Bu → f0lν decays are calculated in 3–point QCD sum rule method, assuming that f0 is a quark–antiquark state with a mixture of strange and light quarks. The branching ratios of these decays are calculated in terms of the mixing angle. e-mail: [email protected] permanent address:Institute of Physics,Baku,Azerbaijan e-mail: [email protected]
متن کاملSemileptonic B Meson Decays and Interfering Amplitudes
Consequences of the interference between external and internal spectator amplitudes for the lifetimes and semileptonic decay fractions of B and B mesons are discussed. Extrapolating from the constructive interference observed in 11 exclusive hadronic B decays we find an inclusive semileptonic decay fraction of (11.2± 0.5 ± 1.7)%, significantly closer to the experimental results than previous pr...
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: Physics Letters B
سال: 1999
ISSN: 0370-2693
DOI: 10.1016/s0370-2693(99)00386-x