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LHC Probes of TeV-Scale Scalars in SO(10) Grand Unification
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.ORCID iD: 0000-0001-7268-549X
2017 (English)In: Advances in High Energy Physics, ISSN 1687-7357, E-ISSN 1687-7365, article id 7498795Article in journal (Refereed) Published
Abstract [en]

We investigate the possibility of TeV-scale scalars as low energy remnants arising in the nonsupersymmetric SO(10) grandunification framework where the field content is minimal.We consider a scenario where the SO(10) gauge symmetry is broken intothe gauge symmetry of the Standard Model (SM) through multiple stages of symmetry breaking, and a colored and hyperchargedscalar πœ’ picks a TeV-scale mass in the process. The last stage of the symmetry breaking occurs at the TeV-scale where the leftrightsymmetry, that is, SU(2)𝐿 βŠ— SU(2)𝑅 βŠ— U(1)π΅βˆ’πΏ βŠ— SU(3)𝐢, is broken into that of the SM by a singlet scalar field S of mass𝑀S ∼ 1TeV, which is a component of an SU(2)𝑅-triplet scalar field, acquiring a TeV-scale vacuum expectation value. For the LHCphenomenology, we consider a scenario where S is produced via gluon-gluon fusion through loop interactions with πœ’ and alsodecays to a pair of SM gauge bosons through πœ’ in the loop.We find that the parameter space is heavily constrained from the latestLHC data.We use a multivariate analysis to estimate the LHC discovery reach of S into the diphoton channel.

Place, publisher, year, edition, pages
HINDAWI LTD , 2017. article id 7498795
Keywords [en]
RIGHT SYMMETRIC MODELS; SPONTANEOUS VIOLATION; ATLAS DETECTOR; NEUTRINO; HIGGS; PARITY; MASS; SEARCH; LEPTON; BOSONS
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:uu:diva-328275DOI: 10.1155/2017/7498795ISI: 000403360200001OAI: oai:DiVA.org:uu-328275DiVA, id: diva2:1168236
Funder
Swedish Research Council, 621-2011-5107Carl Tryggers foundation , CTS-14:206Available from: 2017-12-20 Created: 2017-12-20 Last updated: 2017-12-20Bibliographically approved

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