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Advances in High Energy Physics
Volume 2017, Article ID 7498795, 13 pages
Research Article

LHC Probes of TeV-Scale Scalars in Grand Unification

Department of Physics and Astronomy, Uppsala University, P.O. Box 516, 751 20 Uppsala, Sweden

Correspondence should be addressed to Tanumoy Mandal; es.uu.scisyhp@ladnam.yomunat

Received 14 February 2017; Accepted 24 April 2017; Published 30 May 2017

Academic Editor: Anna Cimmino

Copyright © 2017 Ufuk Aydemir and Tanumoy Mandal. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The publication of this article was funded by SCOAP3.


We investigate the possibility of TeV-scale scalars as low energy remnants arising in the nonsupersymmetric grand unification framework where the field content is minimal. We consider a scenario where the gauge symmetry is broken into the gauge symmetry of the Standard Model (SM) through multiple stages of symmetry breaking, and a colored and hypercharged scalar picks a TeV-scale mass in the process. The last stage of the symmetry breaking occurs at the TeV-scale where the left-right symmetry, that is, , is broken into that of the SM by a singlet scalar field of mass  TeV, which is a component of an -triplet scalar field, acquiring a TeV-scale vacuum expectation value. For the LHC phenomenology, we consider a scenario where is produced via gluon-gluon fusion through loop interactions with and also decays to a pair of SM gauge bosons through in the loop. We find that the parameter space is heavily constrained from the latest LHC data. We use a multivariate analysis to estimate the LHC discovery reach of into the diphoton channel.