One leptoquark to rule them all

• Verfasst von: Bauer, Martin [VerfasserIn]
• Verfasst von: Neubert, Matthias [VerfasserIn]
• Titel: One leptoquark to rule them all
• Titelzusatz: a minimal explanation for RD(∗), RK and (g−2)[mu]
• Verf.angabe: Martin Bauer and Matthias Neubert
• Fussnoten: Im Titel sind "D", "*" "K" und "mu" tiefgestellt ; Gesehen am 10.01.2018
• Titel Quelle: Enthalten in: De.arxiv.org
• Jahr Quelle: 2016
• Band/Heft Quelle: (2016) Artikel-Nummer 1511.01900, 6 Seiten
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1567020887

Abstract

We show that by adding a single new scalar particle to the Standard Model, a TeV-scale leptoquark with the quantum numbers of a right-handed down quark, one can explain in a natural way three of the most striking anomalies of particle physics: the violation of lepton universality in $\bar B\to\bar K\ell^+\ell^-$ decays, the enhanced $\bar B\to D^{(*)}\tau\bar\nu$ decay rates, and the anomalous magnetic moment of the muon. Constraints from other precision measurements in the flavor sector can be satisfied without fine-tuning. Our model predicts enhanced $\bar B\to\bar K^{(*)}\nu\bar\nu$ decay rates and a new-physics contribution to $B_s\!-\!\bar B_s$ mixing close to the current central fit value.