Unification with vector-like fermions and signals at LHC
| Autor: | Sudhir K. Vempati, Biplob Bhattacherjee, Pritibhajan Byakti, Ashwani Kushwaha |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Quantum chromodynamics
Physics Nuclear and High Energy Physics Particle physics 010308 nuclear & particles physics Proton decay Physics beyond the Standard Model High Energy Physics::Phenomenology Yukawa potential FOS: Physical sciences Fermion 01 natural sciences High Energy Physics - Phenomenology Seesaw mechanism High Energy Physics - Phenomenology (hep-ph) Beyond Standard Model 0103 physical sciences Higgs boson lcsh:QC770-798 GUT lcsh:Nuclear and particle physics. Atomic energy. Radioactivity Neutrino 010306 general physics |
| Zdroj: | Journal of High Energy Physics Journal of High Energy Physics, Vol 2018, Iss 5, Pp 1-52 (2018) |
| Popis: | We look for minimal extensions of Standard Model with vector like fermions leading to precision unification of gauge couplings. Constraints from proton decay, Higgs stability and perturbativity are considered. The simplest models contain several copies of vector fermions in two different (incomplete) representations. Some of these models encompass Type III seesaw mechanism for neutrino masses whereas some others have a dark matter candidate. In all the models, at least one of the candidates has non-trivial representation under $SU(3)_{color}$. In the limit of vanishing Yukawa couplings, new QCD bound states are formed, which can be probed at LHC. The present limits based on results from 13 TeV already probe these particles for masses around a TeV. Similar models can be constructed with three or four vector representations, examples of which are presented. 48 pages; v3:major corrections with discussion on threshold corrections, version accepted for publication in JHEP |
| Databáze: | OpenAIRE |
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