Theory Seminar (High Energy/Cosmology)
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