Weak mixing angle and proton stability in F-theory GUT

作者：Choi Kang Sin; Kyae Bumseok^*

来源：Nuclear Physics B, 2012, 855(1): 1-20.

DOI：10.1016/j.nuclphysb.2011.09.023

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

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) x U(1)(X) is embedded in SO(10) and E-8. To prohibit the dimension 4 and 5 proton decay processes, the structure group associated with monodromy should be SU(3)(perpendicular to) or smaller. Extra heavy vector-like pairs of {5(-2), (5) over bar (2)} 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 sin(2)theta(0)(W) = 3/8 at the GUT scale, the fluxes are turned on only on the flavor branes.

• 出版日期2012-2-1