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Title: Light axions with large hadronic couplings

Journal Article · · Journal of High Energy Physics (Online)

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.

Research Organization:
Stanford Univ., CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC0012012
OSTI ID:
1499140
Journal Information:
Journal of High Energy Physics (Online), Vol. 2018, Issue 5; ISSN 1029-8479
Publisher:
Springer BerlinCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 14 works
Citation information provided by
Web of Science

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Cited By (4)

Axions in a highly protected gauge symmetry model journal January 2019
Axion-like relics: new constraints from old comagnetometer data journal January 2020
Axions in a highly protected gauge symmetry model text January 2018
A light complex scalar for the electron and muon anomalous magnetic moments text January 2018

Figures / Tables (4)


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