Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-09-22
Physics
High Energy Physics
High Energy Physics - Phenomenology
46 pages, 15 figures
Scientific paper
We undertake a phenomenological study of SU(5) F-theory GUT models with an additional U(1)_{PQ} symmetry. In such models, breaking SU(5) with hypercharge flux leads to the presence of non-GUT multiplets in the spectrum. We study the effect these have on the unification of gauge couplings, including two-loop running as well as low- and high-scale threshold corrections. We use the requirement of unification to constrain the size of thresholds from KK modes of SU(5) gauge and matter fields. Assuming the non-GUT multiplets play the role of messengers of gauge mediation leads to controlled non-universalities in the sparticle spectrum while maintaining grand unification, and we study the LHC phenomenology of this scenario. We find that the MSSM spectrum may become compressed or stretched out {by up to a factor of three} depending on the distribution of hypercharge flux. We present a set of benchmark points whose production cross-sections and decays we investigate, and argue that precision kinematic edge measurements will allow the LHC to distinguish between our model and mGMSB.
Dolan Matthew J.
Marsano Joseph
Schafer-Nameki Sakura
No associations
LandOfFree
Unification and Phenomenology of F-Theory GUTs with U(1)_PQ 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 Unification and Phenomenology of F-Theory GUTs with U(1)_PQ, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Unification and Phenomenology of F-Theory GUTs with U(1)_PQ will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-723786