Weak mixing angle and proton stability in F-theory GUT

Kang Sin Choi, Bumseok Kyae

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


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 languageEnglish
Pages (from-to)1-20
Number of pages20
JournalNuclear Physics, Section B
Issue number1
StatePublished - 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 ).


  • F-theory
  • Gauge coupling unification
  • Proton decay
  • Weak mixing angle


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