1997/04/30 by Dmitri Melikhov, D. Melikhov, N. Nikitin +2 · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1016/s0370-2693(97)00928-3
published as Phys.Lett. B410 (1997) 290-298 · revised version to appear in Physics Letters B. No conclusions have been changed
arxiv created 1997/08/07 · openalex publication_date 1997/10/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Long-distance effects in exclusive rare semileptonic transitions B -> (K, K*) are analysed within a relativistic quark model. The meson transition form factors, describing the meson amplitudes of the effective weak Hamiltonian, are calculated within the dispersion formulation of the quark model as relativistic double spectral representations through the wave functions of the initial and final mesons. The dilepton spectra and lepton asymmetries are considered within the framework provided by the Standard Model. It is found that, while the non-resonant decay rates are very sensitive to quark model parameters, the model dependence of the predicted dilepton forward-backward and lepton polarization asymmetries is remarkably small, providing only an overall ~10% uncertainty.