Authors:	Kivel, Alexey Laux, Julien Yu, Felix
Title:	Supersizing axions with small size instantons
Online publication date:	23-Feb-2024
Year of first publication:	2022
Language:	english
Abstract:	We construct a new framework to calculate the enhancement of axion masses and concomitant effects on axion-meson mixing arising from small size instantons (SSIs), which originate in models featuring an extended color gauge symmetry. The framework is based on an explicit evaluation of ‘t Hooft determinantal operators that partition into instanton amplitudes, affording a more precise determination of the axion-diphoton coupling than previous results. Using an explicit model first presented in ref. [1], we demonstrate that axions solving the strong CP problem can have electroweak scale masses and higher, driven by SSI effects. Such collider axions are prime targets for resonance searches at the Large Hadron Collider and afford a unique anchor for motivating extended color symmetries.
DDC:	530 Physik 530 Physics
Institution:	Johannes Gutenberg-Universität Mainz
Department:	FB 08 Physik, Mathematik u. Informatik
Place:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-10112
Version:	Published version
Publication type:	Zeitschriftenaufsatz
Document type specification:	Scientific article
License:	CC BY
Information on rights of use:	https://creativecommons.org/licenses/by/4.0/
Journal:	Journal of high energy physics 2022 11
Pages or article number:	088
Publisher:	Springer
Publisher place:	Berlin ; Heidelberg
Issue date:	2022
ISSN:	1029-8479
Publisher DOI:	10.1007/JHEP11(2022)088
Appears in collections:	DFG-491381577-D