Non-universal Z ' from SO(10) GUTs with vector-like family and the origin of neutrino masses

Antusch, Stefan and Hohl, Christian and King, Steve F. and Susic, Vasja. (2018) Non-universal Z ' from SO(10) GUTs with vector-like family and the origin of neutrino masses. Nuclear Physics B, 934. pp. 578-605.

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Official URL: https://edoc.unibas.ch/67304/

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A Z' gauge boson with mass around the (few) TeV scale is a popular example of physics beyond the Standard Model (SM) and can be a fascinating remnant of a Grand Unified Theory (GUT). Recently, Z' models with non-universal couplings to the SM fermions due to extra vector-like states have received attention as potential explanations of the present R-K, R-K* anomalies; this includes GUT model proposals based on the SO(10) group. In this paper we further develop GUT models with a flavour non-universal low scale Z' and clarify several outstanding issues within them. First, we successfully incorporate a realistic neutrino sector (with linear and/or inverse low scale seesaw mechanism), which was so far a missing ingredient. Second, we investigate in detail their compatibility with the R-K, R-K* anomalies; we find that the anomalies do not have a consistent explanation within such models. Third, we demonstrate that these models have other compelling phenomenological features; we study the correlations between the flavour violating processes of mu -> 3e and mu-e conversion in a muonic atom, showing how a GUT imprint could manifest itself in experiments. (C) 2018 The Authors. Published by Elsevier B.V.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik (Antusch)
UniBasel Contributors:Antusch, Stefan
Item Type:Article, refereed
Article Subtype:Research Article
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:24 Jan 2019 18:49
Deposited On:24 Jan 2019 18:49

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