B-anomalies in U(2) flavor symmetry
Physik-Institut, Universität Zu¨rich, CH-8057 Zürich, Switzerland
2 Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
* This talk is based on the work with Javier Fuentes-Martín, Gino Isidori and Julie Pagès . It is given at theWorkshop “Flavour changing and conserving processes” 29-31 August ’19 (Capri Island, Italy) e-mail: email@example.com
Published online: 27 April 2020
We analyzed how to test flavor and helicity structures of the corresponding amplitudes in view of future data, motivated by the recent hints of lepton flavor universality violation observed in semileptonic B decays. The general assumption that non-standard effects are controlled by a U(2)5 flavor symmetry, minimally broken as in the Standard Model Yukawa sector, leads to stringent predictions on leptonic and semileptonic B decays. Future measurements will allow to prove or falsify this general hypothesis independently of its dynamical origin.
© The Authors, published by EDP Sciences, 2020
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