The University of Southampton
University of Southampton Institutional Repository

# Higgs pair production at the LHC through the flavon

[Unknown type: UNSPECIFIED]

Record type: UNSPECIFIED

## Abstract

The detection of a single Higgs boson at the Large Hadron Collider (LHC) has allowed one to probe some properties of it, including the Yukawa and gauge couplings. However, in order to probe the Higgs potential, one has to rely on new production mechanisms, such as Higgs pair production. In this paper, we show that such a channel is also sensitive to the production and decay of a so-called `Flavon' field ($H_F$), a new scalar state that arises in models that attempt to explain the hierarchy of the Standard Model (SM) fermion masses. In particular, we show that, with 300 fb$^{-1}$ of accumulated data at 14 TeV (the Run 3 stage) of the LHC an heavy Flavon $H_F$ with mass $M_{H_F} \simeq 2m_t$ can be explored with $5\sigma$ significance through the channel $pp \to H_F\to hh~(h\to \gamma \gamma, h\to b \bar{b})$. However, to probe the $M_{H_F} \sim 1$ TeV range, one has to rely on the High-Luminosity LHC (HL-LHC).

Text
2205.12641v1 - Author's Original

Published date: 25 May 2022
Additional Information: 28 pages, 14 figures
Keywords: hep-ph

## Identifiers

Local EPrints ID: 472290
URI: http://eprints.soton.ac.uk/id/eprint/472290
PURE UUID: 679143aa-2fba-43c1-95c4-78d72f50bb78
ORCID for Stefano Moretti: orcid.org/0000-0002-8601-7246

## Catalogue record

Date deposited: 30 Nov 2022 17:47

## Contributors

Author: Marco A. Arroyo-Ureña
Author: Amit Chakraborty
Author: J. Lorenzo Díaz-Cruz
Author: Dilip Kumar Ghosh
Author: Najimuddin Khan
Author: Stefano Moretti