$B_{(s)}\to S$ transitions in the light cone sum rules with the chiral current

Abstract

$B_{(s)}$ semi-leptonic decays to the light scalar meson, $B_{(s)}\to Sl{\bar{\nu }}_l,Sl\bar{l}(l=e,\mu ,\tau )$, are investigated in the QCD light-cone sum rules (LCSR) with chiral current correlator. Having little knowledge of ingredients of the scalar mesons, we confine ourself to the two quark picture for them and work with the two possible Scenarios. The resulting sum rules for the form factors receive no contributions from the twist-3 distribution amplitudes (DA's), in comparison with the calculation of the conventional LCSR approach where the twist-3 parts play usually an important role. We specify the range of the squared momentum transfer $q^2$, in which the operator product expansion (OPE) for the correlators remains valid approximately. It is found that the form factors satisfy a relation consistent with the prediction of soft collinear effective theory (SCET). In the effective range we investigate behaviors of the form factors and differential decay widthes and compare our calculations with the observations from other approaches. The present findings can be beneficial to experimentally identify physical properties of the scalar mesons.

22 pages,16 figures

References in corpus (10)

• $B\to S$ Transition Form Factors in the PQCD approach
• $B_s\to f_0(980)$ form factors and $B_s$ decays into $f_0(980)$
• The effective continuum threshold in dispersive sum rules
• The Scalar Meson f0(980) in Heavy-Meson Decays
• Scalar mesons in weak semileptonic decays of $B_{(s)}$
• K1(1270)-K1(1400) Mixing Angle and New-Physics Effects in B to K1 l+ l- Decays
• Analysis of rare (B -> K_0*(1430) l^+ l^- decay) within QCD sum rules
• Study of $B\to K_0^{\ast }(1430)\ell \bar{\ell }$ Decays
• $B\to K_0^{\ast }(1430)l^{+}{l}^{-}$ decays in supersymmetric theories
• Heavy-to-light transition form factors and their relations in light-cone QCD sum rules

Cited by in corpus (28)

• Decay properties of $P$-wave charmed baryons from light-cone QCD sum rules
• Generalized Heavy-to-Light Form Factors in Light-Cone Sum Rules
• Revisiting charmless hadronic B decays to scalar mesons
• Twist-3 light-cone distribution amplitudes of the scalar mesons within the QCD sum rules and their application to the $B\to S$ transition form factors
• Charmless weak $B_s$ decays in the relativistic quark model
• ${\bar{B}}_s\to f_0(980)$ form factors and the width effect from light-cone sum rules
• Form factors of the B-S-transitions in the covariant quark model
• Chiral Dynamics and S-wave contributions in Semileptonic $D_s/B_s$ decays into ${\pi }^{+}{\pi }^{-}$
• Study of $\mathbf{D}\to {\mathbf{a}}_0(980){\mathbf{e}}^{+}{\mathbf{\nu }}_{\mathbf{e}}$ decay in the light-cone sum rules approach
• $K_0^{\ast }(1430)$ Twist-2 Distribution Amplitude and $B_s,D_s\to K_0^{\ast }(1430)$ Transition Form Factors
• Two-body charmed B(Bs) decays involving a light scalar meson
• $B-S$ transition form-factors with the light-cone QCD sum rules
• Investigating the ratio of CKM matrix elements $|V_{ub}|/|V_{cb}|$ from semileptonic decay $B_s^0\to K^{-}{\mu }^{+}{\nu }_{\mu }$ and kaon twist-2 distribution amplitude
• Higher order light-cone distribution amplitudes of the Lambda baryon
• Study of $B\to K_0^{\ast }(1430)K^{(\ast )}$ decays in QCD Factorization Approach
• To understand the rare decay $B_s\to {\pi }^{+}{\pi }^{-}{\ell }^{+}{\ell }^{-}$
• $B\to A$ transitions in the light-cone QCD sum rules with the chiral current
• Probing $|V_{cs}|$ and lepton flavor universality through $D\to K_0^{\ast }(1430)\ell {\nu }_{\ell }$ decay
• Semileptonic $B_s\to K_0^{\ast }(1430)$ transitions with the light-cone sum rules
• Four-body Semileptonic Charm Decays $D\to P_1{P}_2{\ell }^{+}{\nu }_{\ell }$ Based on SU(3) Flavor Analysis
• Chiral dynamics and S-wave contributions in ${\bar{B}}^0/D^0\to {\pi }^{\pm }\eta l^{\mp }\nu$ decays
• Analysis of the electromagnetic form factors and the radiative decays of the vector heavy-light mesons
• Production of Chern-Simons bosons in decays of mesons
• Scrutinizing $B^0$-meson flavor changing neutral current decay into scalar $K_0^{\ast }(1430)$ meson with $b\to s{\ell }^{+}{\ell }^{-}(\nu \bar{\nu })$ transition
• Form factors of $B_{(s)}$ to light scalar mesons with the $B$-meson LCSR
• Searching for $a_0(980)$-meson parton distribution function
• Transition form factors for $D/B$ to $a_0(980)$ from light-cone QCD sum rules
• $B_{(s)}\to S(a_0(1450),K_0^{\ast }(1430),f_0(1500))$ helicity form factors within QCD light-cone sum rules