GUTs with dim-5 interactions: Gauge Unification and Intermediate Scales

Details GUTs with dim-5 interactions: Gauge Unification and Intermediate Scales GUTs with dim-5 interactions: Gauge Unification and Intermediate Scales

2009-09-22

arxiv.org/abs/0909.3905v2

Phys.Rev.D81:055004,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, 8 figures, 10 tables, Treatment of U(1) mixing effects corrected. Published version.

Scientific paper

10.1103/PhysRevD.81.055004

Dimension-5 corrections to the gauge kinetic term of Grand Unified Theories (GUTs) may capture effects of quantum gravity or string compactification. Such operators modify the usual gauge coupling unification prediction in a calculable manner. Here we examine SU(5), SO(10), and E(6) GUTs in the light of all such permitted operators and calculate the impact on the intermediate scales and the unification programme. We show that in many cases at least one intermediate scale can be lowered to even 1-10 TeV, where a neutral Z' and possibly other states are expected.

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