Flavour from the Planck scale to the electroweak scale

2019/05/07 by King, S. F.
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.1905.02660

Abstract

We discuss a theory of flavour in which Higgs Yukawa couplings are related to those of the new scalar triplet leptoquark and/or Z' responsible for R_K^(*), with all couplings arising effectively from mixing with a vector-like fourth family, whose mass may be anywhere from the Planck scale to the electroweak scale for the leptoquarks explanation, but is pinned down to the TeV scale if the Z' exchange plays a role. However, in this particular model, only leptoquark exchange can contribute significantly to R_K^(*), since Z' exchange is too constrained from B_s mixing and τ→ 3 μ, although other Higgs Yukawa matrix structures may allow it.

Related

• Theories of flavour from the Planck scale to the electroweak scale
• Flavour hierarchies and B-anomalies in a twin Pati-Salam theory of flavour
• A Simplified Twin Pati-Salam Theory of Flavour with a TeV Scale Vector Leptoquark
• Implications of a vector-like lepton doublet and scalar Leptoquark on R(D^(*))
• Phenomenology of a Deconstructed Electroweak Force