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Title: Light axions with large hadronic couplings

Abstract

We present models in which axions have large couplings to hadrons while remaining naturally light. By assigning U(1)PQ charges to Standard Model quarks such that U(1)PQ is not anomalous under QCD, the derivative couplings naturally arise while no potential is generated for the axion upon QCD confinement. We present simple models that implement this idea both for an axion-like particle and for the QCD axion. We show that both models lead to sizable flavor violations that could be probed by future experiments. Our construction shows that the axion coupling to hadrons can be essentially independent from its mass and thus motivates experimental searches in a wide range of axion parameter space.

Authors:
 [1]; ORCiD logo [1]
  1. Stanford Univ., CA (United States). Stanford Inst. for Theoretical Physics
Publication Date:
Research Org.:
Stanford Univ., CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1499140
Grant/Contract Number:  
SC0012012
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2018; Journal Issue: 5; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Marques-Tavares, Gustavo, and Teo, Mae. Light axions with large hadronic couplings. United States: N. p., 2018. Web. doi:10.1007/jhep05(2018)180.
Marques-Tavares, Gustavo, & Teo, Mae. Light axions with large hadronic couplings. United States. doi:10.1007/jhep05(2018)180.
Marques-Tavares, Gustavo, and Teo, Mae. Tue . "Light axions with large hadronic couplings". United States. doi:10.1007/jhep05(2018)180. https://www.osti.gov/servlets/purl/1499140.
@article{osti_1499140,
title = {Light axions with large hadronic couplings},
author = {Marques-Tavares, Gustavo and Teo, Mae},
abstractNote = {We present models in which axions have large couplings to hadrons while remaining naturally light. By assigning U(1)PQ charges to Standard Model quarks such that U(1)PQ is not anomalous under QCD, the derivative couplings naturally arise while no potential is generated for the axion upon QCD confinement. We present simple models that implement this idea both for an axion-like particle and for the QCD axion. We show that both models lead to sizable flavor violations that could be probed by future experiments. Our construction shows that the axion coupling to hadrons can be essentially independent from its mass and thus motivates experimental searches in a wide range of axion parameter space.},
doi = {10.1007/jhep05(2018)180},
journal = {Journal of High Energy Physics (Online)},
number = 5,
volume = 2018,
place = {United States},
year = {2018},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 3 works
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Figures / Tables:

Table 1 Table 1: U(1)PQ charge assignments for the first two generations, where we have taken all fields to be left-handed spinors. The third generation quarks are neutral under U(1)PQ.

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.