Explaining the Flavor Anomalies with a Vector Leptoquark (Moriond 2019 update)

Saturnino, Francesco; Crivellin, Andreas (4 October 2019). Explaining the Flavor Anomalies with a Vector Leptoquark (Moriond 2019 update). PoS - proceedings of science, DIS2019, p. 163. Trieste, Italy: Scuola Internazionale Superiore di Studi Avanzati SISSA 10.22323/1.352.0163

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Several experiments revealed intriguing hints for lepton flavor universality (LFU) violating new physics (NP) in semi-leptonic B meson decays, mainly in b → cτν and b → sl+l− transitions at the 3 − 5 σ level. Leptoquarks (LQ) are prime candidates to address these anomalies as they contribute to semi-leptonic decays already at tree level while effects in other flavor observables, agreeing with the standard model (SM), are loop suppressed. In these proceedings we review the vector leptoquark SU(2)L singlet, contained in the famous Pati-Salam model, which is able to address both b → cτν and b → sμ+μ− data simultaneously. Due to the large couplings to tau leptons needed to account for the b → cτν data, sizable loop effects arise which we include in our phenomenological analysis. Updating our result of Ref. [1] with the recent measurements of LHCb [2] and BELLE [3, 4] we find an even better fit to data than before.

Item Type:

Conference or Workshop Item (Paper)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Saturnino, Francesco and Crivellin, Andreas

Subjects:

500 Science > 530 Physics

ISSN:

1824-8039

Publisher:

Scuola Internazionale Superiore di Studi Avanzati SISSA

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

17 Feb 2020 09:18

Last Modified:

17 Feb 2020 09:18

Publisher DOI:

10.22323/1.352.0163

ArXiv ID:

1906.01222

BORIS DOI:

10.7892/boris.139794

URI:

https://boris.unibe.ch/id/eprint/139794

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