Study lepton flavor violation B⁰→l_i^±l_j^∓ within the Mass Insertion Approximation

2023/05/26 by Yitong Wang, Wang, Yi-Tong, Ma, Jiao +9
Medicine · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Neutrino Physics Research #Particle physics theoretical and experimental studies #Radiation Therapy and Dosimetry

paper · pdf · doi:10.48550/arxiv.2305.16595

openalex publication_date 2023/05/26 · openalex created_date 2023/05/30 · openalex updated_date 2026/07/28

Abstract

We study lepton flavor violating (LFV) decays B⁰→l_i^±l_j^∓ (B⁰→ eμ, B⁰→ eτ and B⁰→ μτ) in the U(1)_XSSM (SSM is acronym for the supersymmetric standard model), which is the U(1)_X extension of the minimal supersymmetric standard model (MSSM). The local gauge group of U(1)_XSSM is SU(3)_C× SU(2)_L × U(1)_Y × U(1)_X. These processes (B⁰→ eμ, B⁰→ eτ and B⁰→ μτ) are strictly forbidden in the standard model (SM), but these LFV decays are a signal of new physics (NP). We use the Mass Insertion Approximation (MIA) to find sensitive parameters that directly influence the result of the branching ratio of LFV decay B_d→l_i^±l_j^∓. Combined with the latest experimental results, we analyze the relationship between different sensitive parameters and the branching ratios of the three processes. According to the numerical analysis, these elements are very restricted from the non observation of CLFV.

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