Disformal dark energy at colliders

Brax, P., Burrage, C. and Englert, C. (2015) Disformal dark energy at colliders. Physical Review D, 92(4), 044036. (doi:10.1103/PhysRevD.92.044036)

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Abstract

Disformally coupled, light scalar fields arise in many of the theories of dark energy and modified gravity that attempt to explain the accelerated expansion of the universe. They have proved difficult to constrain with precision tests of gravity because they do not give rise to fifth forces around static non-relativistic sources. However, because the scalar field couples derivatively to standard model matter, measurements at high energy particle colliders offer an effective way to constrain and potentially detect a disformally coupled scalar field. Here we derive new constraints on the strength of the disformal coupling from LHC run 1 data and provide a forecast for the improvement of these constraints from run 2. We additionally comment on the running of disformal and standard model couplings in this scenario under the renormalisation group flow.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Englert, Dr Christoph
Authors: Brax, P., Burrage, C., and Englert, C.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review D
Publisher:American Physical Society
ISSN:1550-7998
ISSN (Online):1550-2368
Published Online:20 August 2015
Copyright Holders:Copyright © 2015 American Physical Society
First Published:First published in Physical Review D 92(4):044036
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher.
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