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Higgs-less Higgs mechanism: low-energy expansion

Abstract : In this talk, we describe an effective theory for electroweak symmetry breaking without a physical Higgs, based on a symmetry larger than the electroweak gauge group. This symmetry forbids deviations from the Standard Model at the leading order in the appropriate chiral expansion. Indeed, the large symmetry allows for a consistent expansion of the effective theory in powers of momenta and spurions. The latter are automatically present: they define the covariant reduction from the large symmetry to the electroweak group.
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Submitted on : Monday, March 13, 2006 - 11:45:35 AM
Last modification on : Wednesday, September 16, 2020 - 4:08:29 PM

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J. Hirn, J. Stern. Higgs-less Higgs mechanism: low-energy expansion. 40èmes Rencontres de Moriond on Electroweak Interactions and Unified Theories, Mar 2005, pp.6. ⟨in2p3-00025764⟩



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