A flavour physics scenario for the 750 GeV diphoton anomaly

TL;DR

This paper proposes that the 750 GeV diphoton anomaly could be explained by a flavon from a flavour symmetry scheme, with TeV scale vector-like T-quarks providing the necessary signals, linking flavor physics with collider observations.

Contribution

It introduces a novel interpretation of the diphoton anomaly as a flavon within a flavour symmetry framework, connecting flavor physics to collider phenomenology.

Findings

Correlation predictions between CKM elements and T-quark mass.

Potential tests in future LHC and B physics experiments.

A unified explanation linking flavor symmetry and diphoton signals.

Abstract

A simple variant of a realistic flavour symmetry scheme for fermion masses and mixings provides a possible interpretation of the diphoton anomaly as an electroweak singlet "flavon". The existence of TeV scale vector-like T-quarks required to provide adequate values for CKM parameters can also naturally account for the diphoton anomaly. Correlations between $V_{ub}$ and $V_{cb}$ with the vector-like T-quark mass can be predicted. Should the diphoton anomaly survive in a future Run, our proposed interpretation can also be tested in upcoming B and LHC studies.