Ms theory precision confronts flavour anomalies

A bstract Based on recent HQET sum rule and lattice calculations we present updated Standard Model predictions for the mass differences of neutral B mesons: Δ M s SM = 18.4 − 1.2 + 0.7 ps − 1 and Δ M d SM = 0.533 − 0.036 + 0.022 ps − 1 study their impact onnew physics models that address the present...

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Bibliographic Details
Published in:The journal of high energy physics 2019-12, Vol.2019 (12), Article 9
Main Authors: Di Luzio, Luca, Kirk, Matthew, Lenz, Alexander, Rauh, Thomas
Format: Article
Language:English
Subjects:
Classical and Quantum Gravitation
Elementary Particles
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
String Theory
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Summary:A bstract Based on recent HQET sum rule and lattice calculations we present updated Standard Model predictions for the mass differences of neutral B mesons: Δ M s SM = 18.4 − 1.2 + 0.7 ps − 1 and Δ M d SM = 0.533 − 0.036 + 0.022 ps − 1 study their impact onnew physics models that address the present hints of anomalous data in b → s ℓℓ transitions. We also examine future prospects of further reducing the theory uncertainties and discuss the implications of a 2025 scenario with Δ M s SM 2025 = 18.4 ± 0.5 ps − 1 . In particular, the latter yields upper bounds M Z ′  ≲ 9TeV and M S 3 ≲ 30 TeV for the minimal Z ′ and S 3 lepto-quark explanations of the b → s ℓℓ anomalies, respectively.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP12(2019)009