Generalized skyrmions in QCD and the electroweak sector

John Ellis, Marek Karliner, Michal Praszalowicz

Research output: Contribution to journalArticlepeer-review

Abstract

We discuss the stability and masses of topological solitons in QCD and strongly-interacting models of electroweak symmetry breaking with arbitrary combinations of two inequivalent Lagrangian terms of fourth order in the field spatial derivatives. We find stable solitons for only a restricted range of the ratio of these combinations, in agreement with previous results, and we calculate the corresponding soliton masses. In QCD, the experimental constraints on the fourth-order terms force the soliton to resemble the original Skyrmion solution. However, this is not necessarily the case in strongly-interacting models of electroweak symmetry breaking, in which a non-Skyrmion-like soliton is also possible. This possibility will be constrained by future LHC measurements and dark matter experiments. Current upper bounds on the electroweak soliton mass range between 18 and 59 TeV, which would be reduced to 4.6 to 8.1 TeV with the likely sensitivity of LHC data to the fourth-order electroweak Lagrangian parameters.

Original languageEnglish
Article number163
JournalJournal of High Energy Physics
Volume2013
Issue number3
DOIs
StatePublished - Mar 2013

Keywords

  • Beyond Standard Model
  • Higgs Physics
  • Technicolor and Composite Models

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