| Article | |
| Report number | arXiv:1904.04121 ; CERN-TH-2019-041 |
| Title | Quark masses, CKM angles and Lepton Flavour Universality violation |
| Author(s) | Barbieri, Riccardo (Pisa, Scuola Normale Superiore ; INFN, Pisa) ; Ziegler, Robert (CERN) |
| Publication | 2019-07-04 |
| Imprint | 2019-04-08 |
| Number of pages | 19 |
| Note | 19 pages, 2 figures; in v2 several points clarified, no change of results, matches published version |
| In: | JHEP 1907 (2019) 023 |
| DOI | 10.1007/JHEP07(2019)023 |
| Subject category | hep-ph ; Particle Physics - Phenomenology |
| Abstract | A properly defined and suitably broken $U(2)$ flavour symmetry leads to successful quantitative relations between quark mass ratios and CKM angles. At the same time the intrinsic distinction introduced by $U(2)$ between the third and the first two families of quarks and leptons may support anomalies in charged and neutral current semi-leptonic $B$-decays of the kind tentatively observed in current flavour experiments. We show how this is possible by the exchange of the $(3,1)_{2/3}$ vector leptoquark in two $U(2)$-models with significantly different values of Lepton Flavour Universality violation, observable in foreseen experiments. |
| Copyright/License | publication: (License: CC-BY-4.0) preprint: (License: CC-BY-4.0) |
Corresponding record in: Inspire
Record created 2019-04-10, last modified 2023-10-04