Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2009-06-03
Physics
High Energy Physics
High Energy Physics - Theory
v2: 108 pages, 3 figures, clarifications added
Scientific paper
We show that in F-theory GUTs, a natural explanation of flavor hierarchies in the quark and lepton sector requires a single point of E_8 enhancement in the internal geometry, from which all Yukawa couplings originate. The monodromy group acting on the seven-brane configuration plays a key role in this analysis. Moreover, the E_8 structure automatically leads to the existence of the additional fields and interactions needed for minimal gauge mediated supersymmetry breaking,__and almost nothing else__. Surprisingly, we find that in all but one Dirac neutrino scenario the messenger fields in the gauge mediated supersymmetry breaking sector transform as vector-like pairs in the 10 + 10* of SU(5). We also classify dark matter candidates available from this enhancement point, and rule out both annihilating and decaying dark matter scenarios as explanations for the recent experiments PAMELA, ATIC and FERMI. In F-theory GUT models, a 10-100 MeV mass gravitino remains as the prime candidate for dark matter, thus suggesting an astrophysical origin for recent experimental signals.
Heckman Jonathan J.
Tavanfar Alireza
Vafa Cumrun
No associations
LandOfFree
The Point of E_8 in F-theory GUTs does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Point of E_8 in F-theory GUTs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Point of E_8 in F-theory GUTs will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-193200