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Journal of High Energy Physics Volume 2009 JHEP11(2009) Create an alert RSS this journal

Yanou Cui et al JHEP11(2009)080 doi:10.1088/1126-6708/2009/11/080

Emergent electroweak symmetry breaking with composite W, Z bosons

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Yanou Cuia, Tony Gherghettab and James D. Wellsc,d

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Abstract References Cited By
We present a model of electroweak symmetry breaking in a warped extra dimension where electroweak symmetry is broken at the UV (or Planck) scale. An underlying conformal symmetry is broken at the IR (or TeV) scale generating masses for the electroweak gauge bosons without invoking a Higgs mechanism. By the AdS/CFT correspondence the W, Z bosons are identified as composite states of a strongly-coupled gauge theory, suggesting that electroweak symmetry breaking is an emergent phenomenon at the IR scale. The model satisfies electroweak precision tests with reasonable fits to the S and T parameter. In particular the T parameter is sufficiently suppressed since the model naturally admits a custodial SU(2) symmetry. The composite nature of the W, Z-bosons provide a novel possibility of unitarizing WW scattering via form factor suppression. Constraints from LEP and the Tevatron as well as discovery opportunities at the LHC are discussed for these composite electroweak gauge bosons.

Keywords

Phenomenology of Field Theories in Higher Dimensions

 

E-print Number: 0907.0906

Cited: by |

Refers: to

PACS

11.30.Qc Spontaneous and radiative symmetry breaking

14.70.Fm W bosons

12.15.-y Electroweak interactions

14.70.Hp Z bosons

13.66.Fg Gauge and Higgs boson production in e-e+ interactions

13.85.Qk Inclusive production with identified leptons, photons, or other nonhadronic particles

Subjects

Particle physics and field theory

Dates

Issue 11 (November 2009)

Received 13 July 2009, accepted for publication 27 October 2009

Published 18 November 2009



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