Angular observables and branching ratio for B_s→ ϕℓ⁺ ℓ^- decay

2025/10/04 by Аidos Issadykov, Issadykov, Aidos
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2510.03739

openalex publication_date 2025/10/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

In this paper, an analysis of the B_s→ ϕℓ⁺ ℓ^- rare decay is presented within the framework of the covariant confined quark model. The B_s→ ϕ transition form factors are calculated and then used to compute the branching fractions and angular observables in various q² bins, including the forward-backward asymmetry A_FB, the longitudinal polarization F_L, and the optimized observables A_i and S_i. The results show agreement with the latest experimental data given by LHCb collaboration and compared with available theoretical predictions.

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