Split Sfermion Families, Yukawa Unification and Muon g2
Abstract
We consider two distinct classes of Yukawa unified supersymmetric SO(10) models with nonuniversal and universal soft supersymmetry breaking (SSB) gaugino masses at M_{\rm GUT}. In both cases, we assume that the third family SSB sfermion masses at M_{\rm GUT} are different from the corresponding sfermion masses of the first two families (which are equal). For the SO(10) model with essentially arbitrary (nonuniversal) gaugino masses at M_{\rm GUT}, it is shown that tb\tau Yukawa coupling unification is compatible, among other things, with the 125 GeV Higgs boson mass, the WMAP relic dark matter density, and with the resolution of the apparent muon g2 anomaly. The colored sparticles in this case all turn out to be quite heavy, of order 5 TeV or more, but the sleptons (smuon and stau) can be very light, of order 200 GeV or so. For the SO(10) model with universal gaugino masses and NUHM2 boundary conditions, the muon g2 anomaly cannot be resolved. However, the gluino in this class of models is not too heavy, \lesssim 3 TeV, and therefore may be found at the LHC.
 Publication:

arXiv eprints
 Pub Date:
 February 2014
 arXiv:
 arXiv:1402.4918
 Bibcode:
 2014arXiv1402.4918A
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 19 pages, 6 figures, 2 tables