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Viability of Strongly-Coupled Scenarios with a Light Higgs-like Boson

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Viability of Strongly-Coupled Scenarios with a Light Higgs-like Boson

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dc.contributor.author Pich Zardoya, Antonio
dc.contributor.author Rosell Escribà, Ignasi
dc.contributor.author Sanz Cillero, Juan José
dc.date.accessioned 2014-02-19T10:01:12Z
dc.date.available 2014-02-19T10:01:12Z
dc.date.issued 2013
dc.identifier.citation Pich Zardoya, Antonio Rosell Escribà, Ignasi Sanz Cillero, Juan José 2013 Viability of Strongly-Coupled Scenarios with a Light Higgs-like Boson Physical Review Letters 110 18 181801
dc.identifier.uri http://hdl.handle.net/10550/33063
dc.description.abstract We present a one-loop calculation of the oblique S and T parameters within strongly coupled models of electroweak symmetry breaking with a light Higgs-like boson. We use a general effective Lagrangian, implementing the chiral symmetry breaking SU(2)(L) circle times SU(2)(R) -> SU(2)(L+R) with Goldstone bosons, gauge bosons, the Higgs-like scalar, and one multiplet of vector and axial-vector massive resonance states. Using a dispersive representation and imposing a proper ultraviolet behavior, we obtain S and T at the next-to-leading order in terms of a few resonance parameters. The experimentally allowed range forces the vector and axial-vector states to be heavy, with masses above the TeV scale, and suggests that the Higgs-like scalar should have a WW coupling close to the standard model one. Our conclusions are generic and apply to more specific scenarios such as the minimal SO(5)/SO(4) composite Higgs model.
dc.relation.ispartof Physical Review Letters, 2013, vol. 110, num. 18, p. 181801
dc.subject Física
dc.title Viability of Strongly-Coupled Scenarios with a Light Higgs-like Boson
dc.type journal article es_ES
dc.date.updated 2014-02-19T10:01:12Z
dc.identifier.doi 10.1103/PhysRevLett.110.181801
dc.identifier.idgrec 091319
dc.rights.accessRights open access es_ES
dc.identifier.url 10.1103/PhysRevLett.110.181801

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