Addressing the B-physics anomalies in a fundamental Composite Higgs Model

TL;DR

This paper proposes a composite Higgs model that explains electroweak naturalness and B-meson decay anomalies by introducing scalar leptoquarks as pseudo Nambu-Goldstone bosons from a new strong sector, with broad phenomenological implications.

Contribution

It introduces a novel composite Higgs framework with scalar leptoquarks arising as pseudo Nambu-Goldstone bosons to address B-physics anomalies and naturalness.

Findings

Leptoquarks $S_1$ and $S_3$ emerge as pseudo Nambu-Goldstone bosons.

The model links electroweak naturalness with B-physics anomalies.

Rich phenomenology including flavor, Higgs, and collider signatures.

Abstract

I present a model addressing coherently the naturalness problem of the electroweak scale and the observed pattern of deviations from the Standard Model in semi-leptonic decays of $B$ mesons. The Higgs and the two scalar leptoquarks responsible for the $B$-physics anomalies, $S_1 = ({\bf \bar 3}, {\bf 1}, 1/3)$ and $S_3 = ({\bf \bar 3}, {\bf 3}, 1/3)$, arise as pseudo Nambu-Goldstone bosons of a new strongly coupled sector at the multi-TeV scale. I focus on an explicit realization of such a dynamics in terms of a new strongly coupled gauge interaction and extra vectorlike fermions charged under it. The model presents a very rich phenomenology, ranging from flavour observables, Higgs and electroweak precision measurements, and direct searches of new states at the LHC.