منابع مشابه
Exclusive Radiative B Meson Decays
We have investigated exclusive, radiative B meson decays to charmless mesons (ρ, ω, φ, K(892), K 2 (1430)) in 9.7× 106 BB̄ decays accumulated with the CLEO detector. The B → K(892)γ branching fractions are determined to be B(B0 → K∗0(892)γ) = (4.55 +0.72 −0.68 ± 0.34)×10−5 and B(B+ → K∗+(892)γ) = (3.76 +0.89 −0.83 ± 0.28)×10−5. We have searched for CP asymmetry in B → K(892)γ decays and measure ...
متن کاملPQCD analysis of exclusive B meson decays
Recently, perturbative QCD (PQCD) has been proposed to be an alternative approach to the study of heavy hadron decays [1{3], which complements the heavy quark e ective theory (HQET) [4] for inclusive processes and the Bauer-Stech-Wirbel (BSW) method [5] for exclusive processes. The basic idea is the factorization theorem, which states that nonperturbative dynamics involved in a physical quantit...
متن کاملWeak Form Factors for Heavy Meson Decays
We calculate the form factors for weak decays of B(s) and D(s) mesons to light pseudoscalar and vector mesons within a relativistic dispersion approach based on the constituent quark picture. This approach gives the form factors as relativistic double spectral representations in terms of the wave functions of the initial and final mesons. The form factors have the correct analytic properties an...
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 کاملForm Factors in D Meson Decays
We study the dΓ/dq spectra and the branching fractions of the D meson exclusive semileptonic decays with the lepton mass effects into consideration. We investigate their sensitivity to form factor models, and find that the decays to a pseudoscalar meson and a lepton pair are sensitive to the property of the form factor F1(q ), and those to a vector meson and a lepton pair to the form factor A1(...
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 Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
سال: 1995
ISSN: 0168-9002
DOI: 10.1016/0168-9002(95)00999-x