Running of fermion observables in non-supersymmetric SO(10) models

Publisher's version (útgefin grein). We investigate the complete renormalization group running of fermion observables in two different realistic non-supersymmetric models based on the gauge group SO(10) with intermediate symmetry breaking for both normal and inverted neutrino mass orderings. Co...

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Bibliographic Details
Published in:Journal of High Energy Physics
Main Authors: Ohlsson, Tommy, Pernow, Marcus
Other Authors: Raunvísindastofnun (HÍ), Science Institute (UI), Verkfræði- og náttúruvísindasvið (HÍ), School of Engineering and Natural Sciences (UI), Háskóli Íslands (HÍ), University of Iceland (UI)
Format: Article in Journal/Newspaper
Language:English
Published: Springer Science and Business Media LLC 2018
Subjects:
Beyond Standard Model
GUT
Öreindir
Roland
Stella
Iceland
Online Access:https://hdl.handle.net/20.500.11815/1398
https://doi.org/10.1007/JHEP11(2018)028
Description
Summary:Publisher's version (útgefin grein). We investigate the complete renormalization group running of fermion observables in two different realistic non-supersymmetric models based on the gauge group SO(10) with intermediate symmetry breaking for both normal and inverted neutrino mass orderings. Contrary to results of previous works, we find that the model with the more minimal Yukawa sector of the Lagrangian fails to reproduce the measured values of observables at the electroweak scale, whereas the model with the more extended Yukawa sector can do so if the neutrino masses have normal ordering. The difficulty in finding acceptable fits to measured data is a result of the added complexity from the effect of an intermediate symmetry breaking as well as tension in the value of the leptonic mixing angle θℓ23 . We would like to thank Sofiane Boucenna, Davide Meloni, Stella Riad, and Shun Zhou for useful discussions. T.O. acknowledges support by the Swedish Research Council (Vetenskapsr˚adet) through contract No. 2017-03934 and the KTH Royal Institute of Technology for a sabbatical period at the University of Iceland. M.P. thanks “Stiftelsen Olle Engkvist Byggm¨astare” and “Roland Gustafssons Stiftelse f¨or teoretisk fysik” for financial support. Numerical computations were performed on resources provided by the Swedish National Infrastructure for Computing (SNIC) at PDC Center for High Performance Computing (PDC-HPC) at KTH Royal Institute of Technology in Stockholm, Sweden under project number PDC-2017-115. Peer Reviewed

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