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Exotic Higgs boson decays and the electroweak phase transition

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Abstract
Light new physics weakly coupled to the Higgs can induce a strong first-order electroweak phase transition (EWPT). Here, we argue that scenarios in which the EWPT is driven first-order by a light scalar with mass between ∼10  GeV−mh/2 and small mixing with the Higgs will be conclusively probed by the high-luminosity LHC and future Higgs factories. Our arguments are based on analytic and numerical studies of the finite-temperature effective potential and provide a well-motivated target for exotic Higgs decay searches at the LHC and future lepton colliders.
Type
article
article
Date
2020-01-01
Publisher
Degree
Advisors
License
UMass Amherst Open Access Policy
License
http://creativecommons.org/licenses/by/4.0/