∆Ms theory precision confronts flavour anomalies

Di Luzio, Luca; Kirk, Matthew; Lenz, Alexander; Rauh, Thomas

Abstract

Based on recent HQET sum rule and lattice calculations we present updated Standard Model predictions for the mass differences of neutral B mesons: ΔMSMs=(18.4+0.7−1.2)ps−1 and ΔMSMd=(0.533+0.022−0.036)ps−1 study their impact onnew physics models that address the present hints of anomalous data in b → sℓℓ transitions. We also examine future prospects of further reducing the theory uncertainties and discuss the implications of a 2025 scenario with ΔMSM2025s=(18.4±0.5) ps−1. In particular, the latter yields upper bounds MZ′ ≲ 9TeV and MS3≲30TeVfor the minimal Z′ and S3 lepto-quark explanations of the b → sℓℓ anomalies, respectively.

Citation

Di Luzio, L., Kirk, M., Lenz, A., & Rauh, T. (2019). ∆Ms theory precision confronts flavour anomalies. Journal of High Energy Physics, 2019(12), Article 9. https://doi.org/10.1007/jhep12%282019%29009

• Journal Article Type: Article
• Acceptance Date: Nov 19, 2019
• Online Publication Date: Dec 2, 2019
• Publication Date: Dec 31, 2019
• Deposit Date: Jan 7, 2020
• Publicly Available Date: Jan 7, 2020
• Journal: Journal of High Energy Physics
• Print ISSN: 1126-6708
• Publisher: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
• Peer Reviewed: Peer Reviewed
• Volume: 2019
• Issue: 12
• Article Number: 9
• DOI: https://doi.org/10.1007/jhep12%282019%29009