Heavier boson, dark matter, and gravitational waves from strings in an SO(10) axion model
May 10, 2022
20 pages
Published in:
- Phys.Rev.D 106 (2022) 5, 055009
- Published: Sep 1, 2022
e-Print:
- 2205.04824 [hep-ph]
DOI:
- 10.1103/PhysRevD.106.055009 (publication)
View in:
Citations per year
Abstract: (APS)
Inspired by the recent determination of the -boson mass by the CDF collaboration, we revisit an axion model in which a scalar triplet field with zero hypercharge is known to acquire a nonzero vacuum expectation value (VEV) through its mixing with the Standard Model Higgs doublet. The triplet VEV provides a sizable contribution to the mass, which helps in significantly lowering the discrepancy between the Standard Model prediction and the higher CDF value for . We show that the relatively light triplet mass () is compatible with gauge coupling unification and observable proton decay. An unbroken gauge symmetry, coupled with the presence of two fermionic 10-plets required to resolve the axion domain wall problem means that both axions and a stable intermediate mass () fermion are plausible dark matter candidates. We also display the gravitational wave spectrum from the intermediate scale topologically stable cosmic strings predicted by the model.Note:
- 20 pages, 6 figures, published version
- model: axion
- symmetry: gauge
- gravitational radiation: spectrum
- W: mass
- cosmic string: stability
- p: decay
- coupling: gauge
- Higgs particle: doublet
- axion: domain wall
- triplet
References(106)
Figures(6)
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