Indirect bounds on new physics for R(D^(*))

2022/09/30 by Benjamı́n Grinstein, Grinstein, Benjamin, Jason Aebischer +1
Medicine · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Medical Imaging Techniques and Applications #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2209.15269

openalex publication_date 2022/09/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The Standard Model prediction of the B_c lifetime is discussed, together with the dominant uncertainties and strategies on how to improve them. Furthermore, a new method to compute the B_c lifetime based on the operator product expansion is proposed. It relies on differences of B, D and B_c meson decay rates, in which the free-quark contributions cancel out, reducing the uncertainty of the theory prediction.

Related

• τ_Bc in the Standard Model
• The B_c lifetime in the Standard Model
• Lifetime of the B⁺_c meson in relation to flavour anomalies
• The B_c decay rate in the Standard Model
• Exclusive Decays and Lifetime of B_c Meson in QCD sum rules