CERN Accelerating science

Article
Report number	arXiv:0908.0532
Title	Gaugephobic Higgs Signals at the LHC
Author(s)	Galloway, Jamison (UC, Davis) ; McElrath, Bob (CERN) ; McRaven, John (UC, Davis) ; Terning, John (UC, Davis)
Publication	2009
Imprint	06 Aug 2009
Note	Comments: 16 pages, 8 figures
In:	JHEP 11 (2009) 031
DOI	10.1088/1126-6708/2009/11/031
Subject category	Particle Physics - Phenomenology
Accelerator/Facility, Experiment	CERN LHC
Abstract	The Gaugephobic Higgs model provides an interpolation between three different models of electroweak symmetry breaking: Higgsless models, Randall-Sundrum models, and the Standard Model. At parameter points between the extremes, Standard Model Higgs signals are present at reduced rates, and Higgsless Kaluza-Klein excitations are present with shifted masses and couplings, as well as signals from exotic quarks necessary to protect the Zbb coupling. Using a new implementation of the model in SHERPA, we show the LHC signals which differentiate the generic Gaugephobic Higgs model from its limiting cases. These are all signals involving a Higgs coupling to a Kaluza-Klein gauge boson or quark. We identify the clean signal $p p \to W^(i) \to W H$ mediated by a Kaluza-Klein W, which can be present at large rates and is enhanced for even Kaluza-Klein numbers. Due to the very hard lepton coming from the W decay, this signature has little background, and provides a better discovery channel for the Higgs than any of the Standard Model modes, over its entire mass range. A Higgs radiated from new heavy quarks also has large rates, but is much less promising due to very high multiplicity final states.
Copyright/License	Open Access

Corresponding record in: Inspire