Significant deviations from the standard model are observed in semileptonic charged and neutral-current B decays, the muon magnetic moment, and the extraction of the Cabibbo angle. We propose that these deviations point towards a coherent pattern of new physics effects induced by two scalar mediators, a leptoquark S-1 and a charged singlet phi(+). While S-1 can provide solutions to charged-current B decays and the muon magnetic moment, and phi(+) can accommodate the Cabibbo-angle anomaly independently, their one-loop level synergy can also address neutral-current B decays. This framework provides the most minimal explanation to the above-mentioned anomalies, while being consistent with all other phenomenological constraints.

Minimal Explanation of Flavor Anomalies: B-Meson Decays, Muon Magnetic Moment, and the Cabibbo Angle / Marzocca, David; Trifinopoulos, Sokratis. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 127:6(2021), pp. 1-6. [10.1103/PhysRevLett.127.061803]

Minimal Explanation of Flavor Anomalies: B-Meson Decays, Muon Magnetic Moment, and the Cabibbo Angle

Marzocca, David;
2021-01-01

Abstract

Significant deviations from the standard model are observed in semileptonic charged and neutral-current B decays, the muon magnetic moment, and the extraction of the Cabibbo angle. We propose that these deviations point towards a coherent pattern of new physics effects induced by two scalar mediators, a leptoquark S-1 and a charged singlet phi(+). While S-1 can provide solutions to charged-current B decays and the muon magnetic moment, and phi(+) can accommodate the Cabibbo-angle anomaly independently, their one-loop level synergy can also address neutral-current B decays. This framework provides the most minimal explanation to the above-mentioned anomalies, while being consistent with all other phenomenological constraints.
2021
127
6
1
6
061803
10.1103/PhysRevLett.127.061803
https://arxiv.org/abs/2104.05730
Marzocca, David; Trifinopoulos, Sokratis
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/132012
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