Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-04-06
Nucl.Phys.B649:39-87,2003
Physics
High Energy Physics
High Energy Physics - Phenomenology
Version to appear in Nucl. Phys. B
Scientific paper
10.1016/S0550-3213(02)00978-1
We study gauge coupling unification and various phenomenological issues, such as baryon number conservation, the $\mu $ problem and neutrino anomalies, within SUSY 5D orbifold models. The 5D MSSM on an $S^{(1)}/Z_2$ orbifold with 'minimal' field content does not lead to low scale unification, while some of its extensions can give unification near the multi TeV scale. Within the orbifold SU(5) GUT, low scale unification can not be realized due to full SU(5) multiplets participating in the renormalization above the compactification scale. As alternative examples, we construct 5D N=1 SUSY Pati-Salam $SU(4)_c\tm SU(2)_L\tm SU(2)_R\equiv G_{422}$ and flipped $SU(5)\tm U(1)\equiv G_{51}$ GUTs [both maximal subgroups of SO(10)] on an $S^{(1)}/Z_2\tm Z_2'$ orbifold. New examples of low scale unifications within $G_{422}$ are presented. For $G_{51}$ the unification scale is shown to be necessarily close to $\sim 10^{16}$ GeV. The possible influence of brane couplings on the gauge coupling unification is also outlined. For the resolution of the various phenomenological problems extensions with a discrete ${\cal Z}$ symmetry turn out to be very effective.
Correia Filipe Paccetti
Schmidt Michael G.
Tavartkiladze Zurab
No associations
LandOfFree
Gauge Coupling Unification and Phenomenology of Selected Orbifold 5D N=1 SUSY Models 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 Gauge Coupling Unification and Phenomenology of Selected Orbifold 5D N=1 SUSY Models, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gauge Coupling Unification and Phenomenology of Selected Orbifold 5D N=1 SUSY Models will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-595248