Journal
PHYSICAL REVIEW LETTERS
Volume 128, Issue 14, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.128.141801
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Funding
- Guangzhou Basic and Applied Basic Research Foundation [202102020885]
- Sun Yat-Sen University Science Foundation
- IBS [IBS-R018-D1]
- Office of Science, Office of High Energy Physics of the U.S. Department of Energy [DE-AC0205CH11231]
- NSF [PHY-1915314]
- JSPS [JP20K03942]
- MEXT [JP20H05850, JP20A203]
- WPI, MEXT, Japan
- Hamamatsu Photonics, K. K
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This study finds that the triplet Higgs can explain the neutrino masses, observed baryon asymmetry, and inflation simultaneously, and can be tested in upcoming experiments. This simple framework provides a unified solution to the three major unknowns in modern physics.
We find that the triplet Higgs of the type-II seesaw mechanism can simultaneously generate the neutrino masses and observed baryon asymmetry while playing a role in inflation. We survey the allowed parameter space and determine that this is possible for triplet masses as low as a TeV, with a preference for a small vacuum expectation value for the triplet v(Delta) < 10 keV. This requires that the triplet Higgs must decay dominantly into the leptonic channel. Additionally, this model will be probed at the future 100 TeV collider, upcoming lepton flavor violation experiments such as Mu3e, and neutrinoless double beta decay experiments. Thus, this simple framework provides a unified solution to the three major unknowns of modern physics-inflation, the neutrino masses, and the observed baryon asymmetry-while simultaneously providing unique phenomenological predictions that will be probed terrestrially at upcoming experiments.
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