Form factors and decay rate of Bc * $ \rightarrow$ Dsl+l- decays in the QCD sum rules

Abstract

Rare exclusive B * c → D s l + l − decays are analyzed in the framework of the three-point QCD sum rules approach.The two gluon condensate corrections to the correlation function are included and the form factors of this transition are evaluated. Using the form factors, the decay width and integrated decay rate for these decays are also calculated.2

$$\bar{B}_{d,s} \rightarrow D^{*}_{d,s} V$$ B ¯ d , s → D d , s ∗ V and $$\bar{B}_{d,s}^* \rightarrow D_{d,s} V$$ B ¯ d , s ∗ → D d , s V decays in QCD factorization and possible puzzles

“…Recently, a few interesting theoretical studies of B * weak decays have been made, for instance Refs. [40][41][42][43][44]. In our previous work [38], theB * 0 → D + V − decays have been studied in the framework of naive factorization (NF).…”

Study ofB¯d,s⁎0→Dd,sChang1, Hu2, Chang3 et al. 2016Advances in High Energy Physics1000View full textAdd to dashboardCite

“…It is mainly induced by the theoretical prediction Γ( * 0 → 0 )/Γ( * 0 → 0 ) ≈ 2 (see (19)) and the assumption Γ tot ( * ) ≃ Γ( * → ). Explicitly, such relation could be expressed as…”

“…Recently, a few interesting theoretical studies of * decays have been performed. For instance, in [18][19][20], the theoretical estimates of the semileptonic * decays are made within QCD sum rules framework. In [17], the pure leptonic * → and *…”

Investigation on the New Physics effects of the vector leptoquark on semileptonic $$\bar{B}^*\rightarrow V \tau ^-\bar{\nu _{\tau }}$$ decays

“…Recently, some interesting theoretical research for the B * weak decays have been done within the SM and the NP scenarios [65,[75][76][77][78][79][80]. Motivated by these facts that a vector LQ can explain the anomalies in the b → c(u)lν l and b → sl + l − processes , in this work we will pay our attention to the contributions of the vector LQ forB * → V lν l (V = D * u,d,s , J/ ).…”