| Autor: |
Luca Di Luzio, Matthew Kirk, Alexander Lenz, Thomas Rauh |
| Jazyk: |
angličtina |
| Rok vydání: |
2019 |
| Předmět: |
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| Zdroj: |
Journal of High Energy Physics, Vol 2019, Iss 12, Pp 1-26 (2019) |
| Druh dokumentu: |
article |
| ISSN: |
1029-8479 |
| DOI: |
10.1007/JHEP12(2019)009 |
| Popis: |
Abstract 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 $$ \varDelta {M}_s^{\mathrm{SM}}=\left({18.4}_{-1.2}^{+0.7}\right){\mathrm{ps}}^{-1} $$ and Δ M d SM = 0.533 − 0.036 + 0.022 ps − 1 $$ \varDelta {M}_d^{\mathrm{SM}}=\left({0.533}_{-0.036}^{+0.022}\right){\mathrm{ps}}^{-1} $$ 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 Δ M s SM 2025 = 18.4 ± 0.5 $$ \varDelta {M}_s^{\mathrm{SM}\;2025}=\left(18.4\pm 0.5\right) $$ ps −1. In particular, the latter yields upper bounds M Z′ ≲ 9TeV and M S 3 ≲ 30 TeV $$ {M}_{S_3}\lesssim 30\mathrm{TeV} $$ for the minimal Z′ and S 3 lepto-quark explanations of the b → sℓℓ anomalies, respectively. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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