Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-02-17
Nucl.Phys.B850:1-30,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
44+1 pages, 2 figures
Scientific paper
10.1016/j.nuclphysb.2011.04.009
We determine the anomaly free discrete R symmetries, consistent with the MSSM, that commute with SU(5) and suppress the $\mu$ parameter and nucleon decay. We show that the order M of such $Z_M^R$ symmetries has to divide 24 and identify 5 viable symmetries. The simplest possibility is a $Z_4^R$ symmetry which commutes with SO(10). We present a string-derived model with this $Z_4^R$ symmetry and the exact MSSM spectrum below the GUT scale; in this model $Z_4^R$ originates from the Lorentz symmetry of compactified dimensions. We extend the discussion to include the singlet extensions of the MSSM and find $Z_4^R$ and $Z_8^R$ are the only possible symmetries capable of solving the $\mu$ problem in the NMSSM. We also show that a singlet extension of the MSSM based on a $Z_{24}^R$ symmetry can provide a simultaneous solution to the $\mu$ and strong CP problem with the axion coupling in the favoured window.
Lee Hyun Min
Raby Stuart
Ratz Michael
Ross Graham G.
Schieren Roland
No associations
LandOfFree
Discrete R symmetries for the MSSM and its singlet extensions 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 Discrete R symmetries for the MSSM and its singlet extensions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discrete R symmetries for the MSSM and its singlet extensions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-380672