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Dresden 2013 – scientific programme

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T: Fachverband Teilchenphysik

T 15: Beyond the Standard Model (Theorie) 2

T 15.7: Talk

Monday, March 4, 2013, 18:15–18:30, WIL-A124

Multi-Scale-Breaking of Pati-Salam-GUTs — •Florian Hartmann, Wolfgang Kilian, and Karsten Schnitter — Universität Siegen, Deutschland

As left-right-symmetric extensions of the SM, Pati-Salam GUTs contain right-handed neutrinos. By a multi-step breaking of the symmetry, their mass scale can be chosen near its best-fit value of ∼1014 GeV. We show in various cases that a full unification of all gauge couplings near the Planck scale is possible. In addition, we construct the Higgs parts of the Pati-Salam superpotential. We investigate the possibility of a strict Z2 symmetry between the left and right-handed part. This may lead to interesting new features such as massless states which are associated to the Goldstone modes.

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