TY  - JOUR
AU  - Hirsch, M.
AU  - Joaquim, F. R.
AU  - Vicente, A.
PY  - 2012
DA  - 2012//
TI  - Constrained SUSY seesaws with a 125 GeV Higgs
T2  - J. High Energy Phys.
JO  - Journal of High Energy Physics
SP  - 105
EP  - 33pp
VL  - 11
IS  - 11
PB  - Springer
KW  - Higgs Physics
KW  - Rare Decays
KW  - Neutrino Physics
KW  - Supersymmetric Standard Model
AB  - Motivated by the ATLAS and CMS discovery of a Higgs-like boson with a mass around 125 GeV, and by the need of explaining neutrino masses, we analyse the three canonical SUSY versions of the seesaw mechanism (type I, II and III) with CMSSM boundary conditions. In type II and III cases, SUSY particles are lighter than in the CMSSM (or the constrained type I seesaw), for the same set of input parameters at the universality scale. Thus, to explain m(h0) similar or equal to 125 GeV at low energies, one is forced into regions of parameter space with very large values of m(0), M-1/2 or A(0). We compare the squark and gluino masses allowed by the ATLAS and CMS ranges for m(h0) (extracted from the 2011-2012 data), and discuss the possibility of distinguishing seesaw models in view of future results on SUSY searches. In particular, we briefly comment on the discovery potential of LHC upgrades, for squark/gluino mass ranges required by present Higgs mass constraints. A discrimination between different seesaw models cannot rely on the Higgs mass data alone, therefore we also take into account the MEG upper limit on BR(mu -> e gamma) and show that, in some cases, this may help to restrict the SUSY parameter space, as well as to set complementary limits on the seesaw scale.
SN  - 1126-6708
UR  - http://arxiv.org/abs/1207.6635
UR  - https://doi.org/10.1007/JHEP11(2012)105
DO  - 10.1007/JHEP11(2012)105
LA  - English
N1  - WOS:000312198500040
ID  - Hirsch_etal2012
ER  -