Based on recent HQET sum rule and lattice calculations we present updated Standard Model predictions for the mass differences of neutral B mesons: ΔMsSM=(18.4−1.2+0.7)ps−1 and ΔMdSM=(0.533−0.036+0.022)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 ΔMsSM2025=(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.
∆Ms theory precision confronts flavour anomalies
Di Luzio L.;
2019
Abstract
Based on recent HQET sum rule and lattice calculations we present updated Standard Model predictions for the mass differences of neutral B mesons: ΔMsSM=(18.4−1.2+0.7)ps−1 and ΔMdSM=(0.533−0.036+0.022)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 ΔMsSM2025=(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.File in questo prodotto:
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