B-decay Anomalies in a Composite Leptoquark Model

Abstract

The collection of a few anomalies in semileptonic $B$-decays, especially in $b\to c\tau \bar{\nu }$, invites to speculate about the emergence of some striking new phenomena, perhaps interpretable in terms of a weakly broken $U(2{)}^n$ flavor symmetry and of leptoquark mediators. Here we aim at a partial UV completion of this interpretation by generalizing the minimal composite Higgs model to include a composite vector leptoquark as well.

Comments: 29 pages, 4 figures, 1 table