A SUSY GUT of flavour with S-4 X U(5) to NLO

作者：Hagedorn Claudia^*; King Stephen F; Luhn Christoph

来源：The Journal of High Energy Physics, 2010, (6): 048.

DOI：10.1007/JHEP06(2010)048

• Beyond Standard Model
• Neutrino Physics
• GUT
• Discrete and Finite Symmetries

We construct a Supersymmetric (SUSY) Grand Unified Theory (GUT) of Flavour based on S-4 X SU(5), together with an additional (global or local) Abelian symmetry, and study it to next-to-leading order (NLO) accuracy. The model includes a successful description of quark and lepton masses and mixing angles at leading order (LO) incorporating the Gatto-Sartori-Tonin (GST) relation and the Georgi-Jarlskog (GJ) relations. We study the vacuum alignment arising from F-terms to NLO and such corrections are shown to have a negligible effect on the results for fermion masses and mixings achieved at LO. Tri-bimaximal (TB) mixing in the neutrino sector is predicted very accurately up to NLO corrections of order 0.1%. Including charged lepton mixing corrections implies small deviations from TB mixing described by a precise sum rule, accurately maximal atmospheric mixing and a reactor mixing angle close to three degrees.

• 出版日期2010-6