Scalar mesons in weak semileptonic decays of $B_{(s)}$

Abstract

The transition form factors of $B_{(s)}\to S$, with $S$ denoting a scalar meson, are investigated in the light-cone sum rules approach. The numerical values are approximately twice as large as that estimated in the light-front quark model and QCD sum rules approach. Using these form factors, we present the analysis of the decay rates for $B\to a_0(1450)l{\bar{\nu }}_l$, $B\to K_0^{\ast }(1430)l\bar{l}$, $B_s\to K_0^{\ast }(1430)l{\bar{\nu }}_l$ and $B_s\to f_0(1500)l\bar{l}$ with $l=e,\mu ,\tau$. The results indicate that magnitudes of $BR({\bar{B}}_0\to a_0(1450)l{\bar{\nu }}_l)$ and $BR(B_s\to K_0^{\ast }(1430)l{\bar{\nu }}_l)$ can arrive at the order of $10^{-4}$, which can be measured in the future experiments to clarify the inner structure of scalar mesons. It is also observed that $BR(B\to K_0^{\ast }(1430){\tau }^{+}{\tau }^{-})$ and $BR(B_s\to f_0(1500){\tau }^{+}{\tau }^{-})$ are an order of magnitude smaller than the corresponding channels of $e^{+}{e}^{-}$ and ${\mu }^{+}{\mu }^{-}$ final states due to the heavily suppressed phase space . Moreover, the longitudinal lepton polarization asymmetry for $B\to K_0^{\ast }(1430)l\bar{l}$ and $B_s\to f_0(1500)l\bar{l}$ are also investigated, whose values are close to -1 for the $e^{+}{e}^{-}$ and ${\mu }^{+}{\mu }^{-}$ pair except the region close to the end points.

arXiv comment20 pages, 4 figures

References in corpus (57)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• Weak Decays Beyond Leading Logarithms
• Glueballs, Hybrids, Multiquarks. Experimental facts versus QCD inspired concepts
• Penguin Enhancement and $B\to K\pi$ decays in perturbative QCD
• Fat penguins and imaginary penguins in perturbative QCD
• Symmetry-breaking corrections to heavy-to-light B meson form factors at large recoil
• Branching Ratio and CP Violation of B to pi pi Decays in Perturbative QCD Approach
• QCD at Low Energies
• $D^{\ast }D\pi$ and $B^{\ast }B\pi$ couplings in QCD
• Covariant Light-Front Approach for s-wave and p-wave Mesons: Its Application to Decay Constants and Form Factors
• A new look at scalar mesons
• Scalar mesons above and below 1 GeV
• Is $f_0(1500)$ a Scalar Glueball?
• B->pi and B->K Transitions from QCD Sum Rules on the Light-Cone
• Exclusive semileptonic and nonleptonic decays of the Bc meson
• Charmless hadronic B decays involving scalar mesons: Implications to the nature of light scalar mesons
• EVIDENCE FOR A SCALAR GLUEBALL
• Exclusive Radiative B-Decays in the Light-Cone QCD Sum Rule Approach
• The B Meson Decay Constant from Unquenched Lattice QCD
• Linking Parton Distributions to Form Factors and Compton Scattering
• Global analysis of inclusive B decays
• Light-cone sum rules for $B\to \pi$ form factors revisited
• Predictions on $B\to \pi \bar{l}{\nu }_l$, $D\to \pi \bar{l}{\nu }_l$ and $D\to K\bar{l}{\nu }_l$ from QCD Light-Cone Sum Rules
• f_B and f_B_s from QCD sum rules
• Scalar nonet quarkonia and the scalar glueball: mixing and decays in an effective chiral approach
• Baryonic Rare Decays of ${\Lambda }_b\to \Lambda {\ell }^{+}{\ell }^{-}$
• Scalar meson and glueball decays within a effective chiral approach
• Heavy-Light Meson Decay Constant from QCD Sum Rules in Three-Loop Approximation
• Light-Front Quark Model Analysis of Exclusive $0^{-}$$\to$$0^{-}$ Semileptonic Heavy Meson Decays
• $D^{\ast }D\pi$ and $B^{\ast }B\pi$ form factors from QCD Sum Rules
• Study of three-body charmless B decays
• The $J/\psi DD$ Vertex in QCD Sum Rules
• $B\to \pi \pi$ Decay in QCD
• Lepton Polarization Asymmetry in $B\to K^{(\ast )}{l}^{+}{l}^{-}$
• Twist-3 distribution amplitudes of scalar mesons from QCD sum rules
• QCD Sum Rules for Exclusive Decays of Heavy Mesons
• J/psi D*D* vertex from QCD sum rules
• Lepton asymmetries in exclusive $b\to s{\ell }^{+}{\ell }^{-}$ decays as a test of the Standard Model
• Radiative $B^{\ast }B\gamma$ and $D^{\ast }D\gamma$ coupling constants in light cone QCD sum rules
• Radiative $B^{\ast }\to B\gamma$ and $D^{\ast }\to D\gamma$ decays in light cone QCD sum rules
• Glueball-quarkonia content and decay of scalar-isoscalar mesons
• CP-Violation in the Decay $b\to s\gamma$ in the Left-Right Symmetric Model
• Weak productions of new charmonium in semi-leptonic decays of B_c
• Semileptonic Decay of $B$ and $D\to K_0^{\ast }(1430)\bar{\ell }\nu$ From QCD Sum Rule
• Annihilation effects in $B\to \pi \pi$ from QCD Light-Cone Sum Rules
• The contribution of the J/psi resonance to the radiative B decays
• Analysis of rare (B -> K_0*(1430) l^+ l^- decay) within QCD sum rules
• Semileptonic D decay into scalar mesons: a QCD sum rule approach
• Further evidence for a large glue component in the f0(1500) meson
• QCD Light-Cone Sum Rule Estimate of Charming Penguin Contributions in B -> pi pi
• Study of $B\to K_0^{\ast }(1430)\ell \bar{\ell }$ Decays
• Light-Front Heavy Quark Effective Theory and Heavy Meson Bound States
• Gluonic Penguins in $B\to \pi \pi$ from QCD Light-Cone Sum Rules
• Leptonic constant of pseudoscalar B_c meson
• Ward Identities, B-> ρForm Factors and |V_ub|
• Heavy Quark Effective Theory on the Light Front

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