2013/01/17 by Damir Becirevic, Damir Bečirević, Nejc Kosnik +5
Computer Science · Physics and Astronomy · #Computational Physics and Python Applications #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.48550/arxiv.1301.4037
8 pages, Confinement X proceedings
openalex publication_date 2013/01/17 · arxiv created 2013/02/10 · arxiv updated 2013/02/12 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28
Recent experimental results for the ratio of the branching fractions of B → D(*)τντ and B→ D(*) μνμ decays came as a surprise and lead to a discussion of possibility to constraining new physics through these modes. Here we focus on Br(B → D τντ)/Br(B → D μνμ) and argue that the result is consistent with the Standard Model within 2 σ and that the test of compatibility of this ratio with the Standard Model can be done experimentally with a minimal theory input. We also show that these two decay channels can provide us with quite good constraints of the new physics couplings.