Imprinting New Physics by using Angular profiles of the FCNC process B_c→ D_s^*(→ D_sπ)ℓ⁺ℓ^-

2024/08/30 by Hira Waseem, Waseem, Hira, Abdul Hafeez +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2408.17436

openalex publication_date 2024/08/30 · openalex created_date 2024/09/29 · openalex updated_date 2026/07/28

Abstract

The decays governed by the flavor-changing-neutral-current transitions (FCNC), such as b→ sℓ⁺ℓ^-, provide an important tool to test the physics in and beyond the Standard Model (SM). This work focuses on investigating the FCNC process B_c→ D_s^* (→ D_sπ)ℓ⁺ℓ^-(ℓ=e,μ,τ). Being an exclusive process, the initial and final state meson matrix elements involve the form factors, which are non-perturbative quantities and need to be calculated using specific models. By using the form factors calculated in the covariant light-front quark model, we analyze the branching fractions and angular observables such as the forward-backward asymmetry A_FB, polarization fractions (Longitudinal and transverse) F_L(T), CP asymmetry coefficients A_i and CP-averaged angular coefficients S_i, both in the SM and some new physics (NP) scenarios. Some of these physical observables are a potential source of finding the physics beyond the SM and help us distinguish various NP scenarios.

Related

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