Limits on anomalous couplings of the Higgs boson to electroweak gauge bosons from LEP and the LHC

Massó, Eduard and Sanz, Verónica (2013) Limits on anomalous couplings of the Higgs boson to electroweak gauge bosons from LEP and the LHC. Physical Review D, 87 (3). 033001. ISSN 1550-7998

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Abstract

In this paper we assume the Higgs is an elementary scalar, and study how new physics could affect its couplings to electroweak gauge bosons. Adding LHC data to LEP data provides new, more stringent limits, particularly when the Higgs to two photon decay signal strength is taken into account. We then study the effect of anomalous angular correlations in the decay to WW*. We obtain a new limit on the rare decay to photon-Z, and use it to constrain supersymmetry, to find that staus with large mixing would be most sensitive to this channel. We also use these limits to constrain radion exchange in warped extra dimensions, finding a limit on the radion mass and interaction scale of the order of TeV. Finally, we have extrapolated the current data to obtain prospects for the full 2012 data set.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics > QC0770 Nuclear and particle physics. Atomic energy. Radioactivity > QC0793 Elementary particle physics
Depositing User: Veronica Sanz
Date Deposited: 24 May 2013 09:17
Last Modified: 06 Mar 2017 17:11
URI: http://sro.sussex.ac.uk/id/eprint/44850

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