PT Journal
AU Gunion, JF
   Lopez-Fogliani, DE
   Roszkowski, L
   Ruiz de Austri, R
   Varley, TA
TI Next-to-minimal supersymmetric model Higgs scenarios for partially universal GUT scale boundary conditions
SO Physical Review D
JI Phys. Rev. D
PY 2011
BP 055026
EP 17pp
VL 84
IS 5
DI 10.1103/PhysRevD.84.055026
LA English
AB We examine the extent to which it is possible to realize the NMSSM "ideal Higgs" models espoused in several papers by Gunion et al. in the context of partially universal GUT scale boundary conditions. To this end we use the powerful methodology of nested sampling. We pay particular attention to whether ideal-Higgs-like points not only pass LEP constraints but are also acceptable in terms of the numerous constraints now available, including those from the Tevatron and B-factory data, (g – 2)(mu) and the relic density Omega h(2). In general for this particular methodology and range of parameters chosen, very few points corresponding to said previous studies were found, and those that were found were at best 2 sigma away from the preferred relic density value. Instead, there exist a class of points, which combine a mostly singlet-like Higgs with a mostly singlino-like neutralino coannihilating with the lightest stau, that are able to effectively pass all implemented constraints in the region 80 < m(h) < 100. It seems that the spin-independent direct detection cross section acts as a key discriminator between ideal Higgs points and the hard to detect singlino-like points.
ER