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Intermediate scales in non-supersymmetric SO(10) grand unified theories
KTH, School of Engineering Sciences (SCI), Theoretical Physics, Theoretical Particle Physics.
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, Published paper (Refereed)
Abstract [en]

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.
Series
Proceedings of Science, ISSN 1824-8039
Keyword [en]
Gauge coupling unification, Grand unified theories, Lower bounds, Neutrino mass, Neutrino oscillations, Parametric spaces, Physical data, Proton decay
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-141883Scopus ID: 2-s2.0-84891929025OAI: oai:DiVA.org:kth-141883DiVA: diva2:699648
Conference
European Physical Society Europhysics Conference on High Energy Physics, EPS-HEP 2009; Krakow; Poland; 16 July 2009 through 22 July 2009
Note

QC 20140228

Available from: 2014-02-28 Created: 2014-02-25 Last updated: 2014-02-28Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
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  • vancouver
  • Other style
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  • de-DE
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Output format
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