Forward-backward Asymmetry and Branching Ratio of B → K1l+l− Transition in Supersymmetric Models
نویسندگان
چکیده
The mass eigen states K1(1270) and K1(1400) are mixture of the strange members of two axial-vector SU(3) octet, P1(K A 1 ) and P1(K B 1 ). Taking into account this mixture, the forward-backward asymmetry and branching ratio of B → K1(1270, 1400) l+l− transitions are studied in the framework of different supersymmetric models. It is found that the results have considerable deviation from the standard model predictions. Any measurement of these physical observables and their comparison with the results obtained in this paper can give useful information about the nature of interactions beyond the standard model. e-mail: [email protected] e-mail: [email protected]
منابع مشابه
Se p 20 07 Form factors , branching ratio and forward - backward asymmetry in B → K 1 l + l − decays
We study long-distance effects in rare exclusive semileptonic decays B → K1ll , K1 is the axial vector meson.The form factors, describing the meson transition amplitudes of the effective Hamiltonian, are calculated using Ward identites which are then used to calculate branching ratio and forward-backward asymmetry in these decay modes. The zero of forward-backward asymmetry is of special intere...
متن کاملExclusive Semileptonic Rare Decays B → (K,K∗)l+l− in Supersymmetric Theories
The invariant mass spectrum, forward-backward asymmetry, and lepton longitude polarization of the exclusive processes B → K(K)ll, l = μ, τ are analyzed under supersymmetric context. Special attention is given to the effects of neutral Higgs bosons. Our analysis shows that for the process B → Kμμ, the branching ratio can be quite largely modified by the effects neutral Higgs bosons and the forwa...
متن کاملForm factors , branching ratio and forward – backward asymmetry in B → K 1 + − decays
We study long-distance effects in the rare exclusive semileptonic decays B →K1 + , where K1 is the axial vector meson. The form factors describing the meson transition amplitudes of the effective Hamiltonian are calculated using the Ward identities, which are then used to calculate the branching ratio and the forward–backward asymmetry in these decay modes. The zero of the forward–backward asym...
متن کاملA Comparative Study of the Decays B → ( K , K ∗ ) l + l − in Standard Model and Supersymmetric Theories ∗
Using improved theoretical calculations of the decay form factors in the Light Cone-QCD sum rule approach, we investigate the decay rates, dilepton invariant mass spectra and the forward-backward (FB) asymmetry in the decays B → (K, K *)ℓ + ℓ − (ℓ ± = e ± , µ ± , τ ±) in the standard model (SM) and a number of popular variants of the supersymmetric (SUSY) models. Theoretical precision on the di...
متن کاملXsl l in the MSSM at NNLO
We present the results of the calculation of QCD corrections to the matching conditions for the Wilson coefficients of operators mediating the transition b → sl+l− in the context of the MSSM. Within a scenario with decoupled heavy gluino the calculated contributions together with those present already in the literature allow for the first time a complete NNLO analysis of B̄ → Xsl+l−. We study th...
متن کامل