B0andBs0decays intoJ/

Abstract

We extend a recent approach to describe the B 0 and B 0 s decays into J/ψ f 0 (500) and J/ψ f 0 (980), relating it to the B 0 and B 0 s decays into J/ψ and a vector meson, φ, ρ, K * . In addition the B 0 and B 0 s decays into J/ψ and κ(800) are evaluated and compared to the K * vector production. The rates obtained are in agreement with available experiment while predictions are made for the J/ψ plus κ(800) decay.

Chiral dynamics and S-wave contributions in semileptonicDs/Bsdecays intoπ+π−

“…[16,17], and a method without the analysis of hard-scattering kernels has been explored recently in Refs. [18][19][20][21][22][23]. See also Refs.…”

S-wave resonance contributions to theB(s)0→JWang1, Li2, Wang3 et al. 2015Phys. Rev. D

“…[21][22][23][24][25]. The chiral unitary approach including final state interaction [26][27][28] was employed to investigate the B 0 (s) → J/ψπ + π − decays recently. The B 0 → J/ψπ + π − branching ratio was calculated in the QCD-improved factorization approach, where a two-meson distribution amplitude for the pion pair and final state interaction were considered [29].…”

Predictions for the $\bar{B}^{0}\rightarrow \bar{K}^{\ast 0}$ X(YZ) and $\bar{B}^{0}_{s}\rightarrow\phi$ X(YZ) with X(4160), Y(3940), Z(3930)

“…Another estimate can be done starting fromB 0 s → J/ψφ, which has a branching ratio of 1.07 × 10 −3 and reducing this rate by one order of magnitude which is the reduction factor that is found for hadronization in ref. [55]. In both cases we find branching fractions of the order of 10 −4 , which are an order of magnitude bigger than many rates of the order of 10 −5 already catalogued in the PDG [75].…”

“…In ref. [55] ratios for the production of vector mesons in the final states were evaluated and predictions for thē B [59]. Related work to this latter one was done studying the semileptonic B s and B decays in ref.…”