Abstract
It is pointed out that a class of flipped SU(5) models based on F-theory naturally explains the gauge coupling unification. It is because the gauge group SU(5)×U(1)X is embedded in SO(10) and E8. To prohibit the dimension 4 and 5 proton decay processes, the structure group associated with monodromy should be SU(3)⊥ or smaller. Extra heavy vector-like pairs of {5-2,52} except only one pair of Higgs should be disallowed, because they could induce the unwanted dimension 5 proton decays. We construct a simple global F-theory model considering these points. To maintain sin2θW0=38 at the GUT scale, the fluxes are turned on only on the flavor branes.
Original language | English |
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Pages (from-to) | 1-20 |
Number of pages | 20 |
Journal | Nuclear Physics, Section B |
Volume | 855 |
Issue number | 1 |
DOIs | |
State | Published - 1 Feb 2012 |
Bibliographical note
Funding Information:We are grateful to Eung-Jin Chun, Hirotaka Hayashi, Jonathan Heckman, Jihn E. Kim and Timo Weigand for discussion. This research is supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (Grant No. 2010-0009021 ).
Keywords
- F-theory
- Gauge coupling unification
- Proton decay
- Weak mixing angle