Intermediate scales in non-supersymmetric SO(10) grand unified theories
2009 (English)In: Proceedings of Science: European Physical Society Europhysics Conference on High Energy Physics, Scuola Internazionale Superiore di Studi Avanzati (S I S S A) , 2009, PoS(EPS-HEP 2009)288- p.Conference paper (Refereed)
It is often argued that in the class of non-supersymmetric SO(10) grand unified theories there is barely any room for reconciling the lower bound on the position of the GUT scale emerging from the proton decay searches and the lower limit on the absolute neutrino mass scale derived from the neutrino oscillation experiments with the gauge coupling unification constraints. The recent two-loop reassessment of the gauge running provides the first complete picture of the situation, complementing the existing studies in several aspects. The improved analysis reveals a new room in the parametric space that could support a class of non-supersymmetric SO(10) models potentially compatible with all current physical data, including constraints on the relevant Yukawa sector emerging from the quark and lepton masses and mixings. This, in turn, brings back the question of viability of some of the simplest non-supersymmetric GUT scenarios.
Place, publisher, year, edition, pages
Scuola Internazionale Superiore di Studi Avanzati (S I S S A) , 2009. PoS(EPS-HEP 2009)288- p.
, Proceedings of Science, ISSN 1824-8039
Gauge coupling unification, Grand unified theories, Lower bounds, Neutrino mass, Neutrino oscillations, Parametric spaces, Physical data, Proton decay
IdentifiersURN: urn:nbn:se:kth:diva-141883ScopusID: 2-s2.0-84891929025OAI: oai:DiVA.org:kth-141883DiVA: diva2:699648
European Physical Society Europhysics Conference on High Energy Physics, EPS-HEP 2009; Krakow; Poland; 16 July 2009 through 22 July 2009
QC 201402282014-02-282014-02-252014-02-28Bibliographically approved