Flavor Violations in B-Mesons within Non-Minimal SU(5)

2024/12/20 by Bhubanjyoti Bhattacharya, Bhattacharya, Bhubanjyoti, Alakabha Datta +7 · 2 citations
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2412.16115

openalex publication_date 2024/12/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Recent anomalies in B-meson decays, such as deviations in R_D^(*) and B→ Kνν, suggest possible lepton flavor universality violation and new exotic interactions. In this work, we explore these anomalies within a non-minimal SU(5) grand unified theory (GUT) framework, which introduces a 45-dimensional Higgs representation predicting exotic scalar particles, including the leptoquark R₂ and diquark S₆. The R₂ leptoquark addresses charged current anomalies in b→ cτν transitions, the S₆ diquark contributes to nonleptonic neutral current processes, such as B→ Kπ, while at the loop level, the exchange of a leptoquark and diquark contributes to B→ Kνν offering solutions to longstanding puzzles.

Cited by

• Probing vector- vs scalar-mediator dark-matter scenarios in B→ (K,K^*) M_X decays
• Anomalies in Hadronic B Decays: an Update

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