Constrained SUSY seesaws with a 125 GeV Higgs

被引：23

作者：

Hirsch, M. ^{[1
]}

Joaquim, F. R. ^{[2
,3
]}

Vicente, A. ^{[4
]}

机构：

[1] Univ Valencia, CSIC, Inst Fis Corpuscular, AHEP Grp, Edificio Inst Paterna,Apartado 22085, E-46071 Valencia, Spain

[2] Univ Tecn Lisboa, Dept Fis, P-1049001 Lisbon, Portugal

[3] Univ Tecn Lisboa, Ctr Fis Teor Particulas, Inst Super Tecn, P-1049001 Lisbon, Portugal

[4] Univ Paris 11, Phys Theor Lab, CNRS, UMR 8627, F-91405 Orsay, France

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2012年 / 11期

关键词：

Higgs Physics; Rare Decays; Neutrino Physics; Supersymmetric Standard Model; SOFT SUPERSYMMETRY-BREAKING; NEUTRINO MASSES; BOSON MASSES; 2-LOOP CORRECTIONS; DARK-MATTER; MODELS; MSSM; NATURALNESS; SEARCHES; PROGRAM;

D O I：

10.1007/JHEP11(2012)105

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

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.

引用

页数：33

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