Higgs production as a probe of chameleon dark energy

Brax, Philippe, Burrage, Clare, Davis, Anne-Christine, Seery, David and Weltman, Amanda (2010) Higgs production as a probe of chameleon dark energy. Physical Review D, 81 (10). ISSN 1550-7998

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Abstract

In this paper we study various particle physics effects of a light, scalar dark energy field with chameleonlike couplings to matter. We show that a chameleon model with only matter couplings will induce a coupling to photons. In doing so, we derive the first microphysical realization of a chameleonic dark energy model coupled to the electromagnetic field strength. This analysis provides additional motivation for current and near-future tests of axionlike and chameleon particles. We find a new bound on the coupling strength of chameleons in uniformly coupled models. We also study the effect of chameleon fields on Higgs production, which is relevant for hadron colliders. These are expected to manufacture Higgs particles through weak boson fusion, or associated production with a Z or W. We show that, like the Tevatron, the LHC will not be able to rule out or observe chameleons through this mechanism, because gauge invariance of the low energy Lagrangian suppresses the corrections that may arise.

Item Type: Article
Additional Information: Author list in alphabetical order.
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User: David Seery
Date Deposited: 06 Feb 2012 20:58
Last Modified: 14 Mar 2017 00:24
URI: http://sro.sussex.ac.uk/id/eprint/28889

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