Authors: Stefano Di Chiara Kimmo Tuominen
Publish Date: 2015/11/26
Volume: 2015, Issue: 11, Pages: 188-
Abstract
We study an extension of the Standard Model featuring a hidden sector that consists of a new scalar charged under a new SUN D gauge group singlet under all Standard Model gauge interactions and coupled with the Standard Model only via a Higgs portal We assume that the theory is classically conformal with electroweak symmetry breaking dynamically induced via the ColemanWeinberg mechanism operating in the hidden sector Due to the symmetry breaking pattern the SUN D gauge group is completely Higgsed and the resulting massive vectors of the hidden sector constitute a stable dark matter candidate We perform a thorough scan over the parameter space of the model at different values of N = 2 3 and 4 and investigate the phenomenological constraints We find that N = 2 3 provide the most appealing model setting in light of present data from colliders and dark matter direct search experiments We expect a heavy Higgs to be discovered at LHC by the end of Run II or the N = 3 model to be ruled outThis article is published under an open access license Please check the Copyright Information section for details of this license and what reuse is permitted If your intended use exceeds what is permitted by the license or if you are unable to locate the licence and reuse information please contact the Rights and Permissions team
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