The Price of an Electroweak Monopole
Abstract
In a recent paper, Cho, Kim and Yoon (CKY) have proposed a version of the SU(2) × U(1) Standard Model with finite-energy monopole and dyon solutions. The CKY model postulates that the effective U(1) gauge coupling ∞ very rapidly as the Englert-Brout-Higgs vacuum expectation value 0, but in a way that is incompatible with LHC measurements of the Higgs boson H γ γ decay rate. We construct generalizations of the CKY model that are compatible with the H γ γ constraint, and calculate the corresponding values of the monopole and dyon masses. We find that the monopole mass could be < 5.5 TeV, so that it could be pair-produced at the LHC and accessible to the MoEDAL experiment.
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