${{\bar{B}_{u,d,s}^* \to D_{u,d,s}^* V\,(V = D_{d,s}^{*-}\,,K^{*-}\,,{\rho}^-)}} $ weak decays
نویسندگان
چکیده
منابع مشابه
B?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 کامل1 / 2 Enhancement and CP Violation for K → ππ , K → ππγ Weak Decays
Abstract Data indicate that ∆I=3/2 transitions account for 4.5–4.7% of both CP conserving and CP violating K→2π decays, as well as CP conserving radiative K→ππγ processes. Observed K → ππγ/ππ branching ratios are shown to scale near α/π or α/2π. The KL-KS mixing angle φ and the semileptonic weak-rate asymmetry δ are reviewed, and shown to be consistent with data. Also, K→ 2π ∆I =1/2 dominance i...
متن کاملViolation and ∆ I = 1 / 2 Enhancement for K → ππ , K → ππγ Weak Decays
Data indicate that ∆I=3/2 transitions account for 4.5–4.7% of both CP conserving and CP violating K→2π decays, as well as CP conserving radiative K→ππγ processes. Observed K→ππγ/ππ branching ratios are shown to scale near α/π or α/2π. The KLKS mixing angle φ and the semileptonic weak-rate asymmetry δ are reviewed, and theory is shown to be consistent with data. Also, K→2π ∆I=1/2 dominance is st...
متن کاملHeavy Flavor Weak Decays
Weak decays of heavy flavor hadrons play a special role in our understanding of physics of the Standard Model and beyond. The measured quantities, however, result from a complicated interplay of weak and strong interactions. Weak leptonic and semileptonic decays are reasonably well understood, whereas weak hadronic decays present challenges to theory. In this talk, we review the present status ...
متن کاملRadiative Weak Annihilation Decays
A class of meson decay modes sensitive to only one quark topology at leading GF order (annihilation of valence quarks through a W ) is described. No experimental observations, nor even upper limits, have been reported for these decays. This work presents a simpleminded (order-of-magnitude) calculation of their branching fractions, and compares to results of previous calculations where available...
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: Chinese Physics C
سال: 2019
ISSN: 1674-1137,2058-6132
DOI: 10.1088/1674-1137/43/10/103104