B_s- B_s mixing interplay with B anomalies

2018/11/30 by Luca Di Luzio, Di Luzio, Luca, M. Kirk +3
Physics and Astronomy · Computer Science · #Particle physics theoretical and experimental studies #Algorithms and Data Compression #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.1811.12884

Abstract

After reviewing the theoretical uncertainties entering the Standard Model determination of the mass difference of the neutral B_s- B_s meson system, ΔM_s^{\rm SM}, we discuss the implications of its updated value for new physics models addressing the experimental anomalies in semi-leptonic B decays. Using the most recent FLAG average of lattice results for the non-perturbative matrix elements and the CKM-fitter determination of V_cb points to a 1.8 σ discrepancy in ΔM_s^{\rm SM} > ΔM_s^{\rm exp}. Extending the analysis in Ref. [1] we show that the latter tension cannot be easily accommodated within single mediator models, whenever the same mediator is also responsible for the b → s ℓ ℓ anomalies.

Citations

• Angular analysis of B⁰ → K^∗(892)⁰ ℓ⁺ ℓ^-

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