Study of scalar meson f_0(980) and K_0^*(1430) from B \to f_0(980)ρ(ω, ϕ) and B \to K^*_0(1430)ρ(ω) Decays

Abstract

In the two-quark model supposition for $f_0(980)$ and $K_0^{\ast }(1430)$, the branching ratios and the direct CP-violating asymmetries for decays ${\bar{B}}^0\to f_0(980){\rho }^0(\omega ,\varphi ),K_0^{\ast 0}(1430){\rho }^0(\omega ),K_0^{\ast -}(1430){\rho }^{+}$ and $B^{-}\to f_0(980){\rho }^{-},K_0^{\ast 0}(1430){\rho }^{-},K_0^{\ast -}(1430){\rho }^0(\omega )$ are studied by employing the perturbative QCD (PQCD)factorization approach. we find the following results: (a) if the scalar meson $f_0(980)$ is viewed as a mixture of $s\bar{s}$ and $(u\bar{u}+d\bar{d})/\sqrt{2}$, the branching ratios of the decays ${\bar{B}}^0\to f_0(980){\rho }^0(\omega ,\varphi )$ and $B^{-}\to f_0(980){\rho }^{-}$, which are induced by $b\to d$ transition, are smaller than the currently experimental upper limits, and the predictions for the decay ${\bar{B}}^0\to f_0(980)\omega ,B^{-}\to f_0(980){\rho }^{-}$ are not far away from their limits; (b) in the decays $B\to K_0^{\ast }(1430)\rho (\omega )$, which are induced by $b\to s$ transition, the branch ratio of ${\bar{B}}^0\to K_0^{\ast 0}(1430){\rho }^0$ is the smallest one in two scenarios, at the order of $10^{-7}$ for scenario I, about $4.8\times 10^{-6}$ for scenario II; (c) the direct CP-asymmetries of the decays $B\to f_0(980)\rho (\omega )$ have a strong dependent on the mixing angle $\theta$: they are large in the range of $25^{\circ }<\theta <40^{\circ }$, and small in the range of $140^{\circ }<\theta <165^{\circ }$, while the direct CP-asymmetries of the decays $B\to K_0^{\ast }(1430)\rho (\omega )$ are not large in both scenarios and most of them are less than 20% in size.

17 pages, 5 figures, minor corrections, typos removed, accepted for publication in Phys. Rev. D

References in corpus (11)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• B->V gamma Beyond QCD Factorisation
• Twist-3 Distribution Amplitudes of K* and phi Mesons
• Evidence for Large Direct CP Violation in B+-=>rho(770)0K+- from Analysis of the Three-Body Charmless B+-=>K+-pi+-pi-+ Decay
• |V_td/V_ts| from B-> V gamma
• Charmless B decays to a scalar meson and a vector meson
• Branching ratios and CP asymmetries of $B\to K{\eta }^{(\prime )}$ decays in the pQCD approach
• Study of scalar mesons f_0(980) and f_0(1500) from $B\to f_0(980)K$ and $B\to f_0(1500)K$ Decays
• Study of Decay Modes B -->K_0^*(1430) phi
• Searches for B meson decays to phiphi, phirho, phifzero(980), and fzero(980)fzero(980) final states

Cited by in corpus (16)

• Revisiting charmless hadronic B decays to scalar mesons
• Chiral Dynamics and S-wave contributions in Semileptonic $D_s/B_s$ decays into ${\pi }^{+}{\pi }^{-}$
• B0 meson decays to rho0 K*0, f0 K*0, and rho-K*+, including higher K* resonances
• Study of $B_{(s)}\to (\pi \pi )(K\pi )$ decays in the perturbative QCD approach
• Two-body charmed B(Bs) decays involving a light scalar meson
• Implications of Family Nonuniversal $Z^{\prime }$ Model on B -->K_0^* pi Decays
• Search for lepton flavor violation in supersymmetric models via meson decays
• Branching Ratios and CP Violations of B \to K_0^*(1430) K^* Decays in the pQCD Approach
• Lepton flavor violation decays of vector mesons in unparticle physics
• Cabibbo-Kobayashi-Maskawa-favored $B$ decays to a scalar meson and a $D$ meson
• Study of $B\to K_0^{\ast }(1430)K^{(\ast )}$ decays in QCD Factorization Approach
• Branching Ratio and CP Asymmetry of B_s \to K^*_0(1430)ρ(ω,ϕ) Decays in the PQCD Approach
• Study of $B_{u,d,s}\to K_0^{\ast }(1430)P$ and $K_0^{\ast }(1430)V$ decays within QCD factorization
• $B\to D{K}_{0,2}^{\ast }$ Decays: PQCD analysis to determine CP violation phase angle $\gamma$
• Charmless $B_s\to VS$ Decays in PQCD Approach
• Branching Ratio and CP Asymmetry of B_s \to K^*_0(1430)πDecays in the PQCD Approach