DecayBs→ϕℓ+ℓ−in covariant quark model

2016/02/29 by S. Dubnička, Stanislav Dubnička, Anna Z. Dubničková +9
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th

paper · pdf · doi:10.1103/physrevd.93.094022

16 pages, 13 figures. arXiv admin note: text overlap with arXiv:1511.04887

arxiv created 2016/05/20 · openalex publication_date 2016/05/23 · arxiv updated 2016/06/22 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Our article is devoted to the study of the rare B_s\ensuremath→\ensuremathφ\ensuremathℓ⁺\ensuremathℓ^\ensuremath- decay where \ensuremathℓ=\ensuremathμ, \ensuremathτ. We compute the relevant form factors in the framework of the covariant quark model with infrared confinement in the full kinematical momentum transfer region. The calculated form factors are used to evaluate branching fractions and polarization observables in the cascade decay B\ensuremath→\ensuremathφ(\ensuremath→K⁺K^\ensuremath-)\ensuremathℓ⁺\ensuremathℓ^\ensuremath-. We compare the obtained results with available experimental data and the results from other theoretical approaches.

Citations

• Decay B→ K^∗(→ Kπ) ℓ⁺ ℓ^- in covariant quark model
• B(s), D(s)→ π, K, η, ρ, K*, ω, ϕ TRANSITION FORM FACTORS AND DECAY RATES WITH EXTRACTION OF THE CKM PARAMETERS |Vub|, |Vcs|, |Vcd|
• Lattice QCD calculation of form factors describing the rare decaysB→K*ℓ+ℓ−andBs→ϕℓ+ℓ−
• Relativistic constituent quark model with infrared confinement
• Form factors from light-cone sum rules withB-meson distribution amplitudes
• Lagrangian theory of composite particles
• Heavy-to-light form factors on the light cone
• Compositeness Criteria of Particles in Quantum Field Theory and S‐Matrix Theory
• Big-Bang Nucleosynthesis