Theory Seminar (High Energy/Cosmology)

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Events on Thursday, April 18th, 2019

Why the Higgs is light, Why it has SM couplings to gauge bosons and fermions, and where there are more Higgses to be found.
Time: 2:30 pm
Place: 5280 Chamberlin Hall
Speaker: Ken Lane, Boston University
Abstract: Current LHC data indicate that H(125) is either the single Higgs of the Standard Model or, to a good approximation, an “aligned Higgs”. We propose that H is the pseudo-Goldstone dilaton of Gildener and Weinberg. This naturally and, we conjecture, uniquely accounts for its low mass and its alignment. It further implies the existence of additional Higgs bosons in ~200 to ~550 GeV. We illustrate this in a version of a 2HDM of Lee and Pilaftsis. Our version is consistent with all published precision EW (LEP) and LHC (ATLAS & CMS) data. We propose tests to confirm or exclude this model with available LHC data.
Host: Kevin Black
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