6533b86ffe1ef96bd12cdf07

RESEARCH PRODUCT

Supersymmetric mass spectra and the seesaw type-I scale

Martin HirschCarolina ArbeláezLaslo Reichert

subject

PhysicsNuclear and High Energy PhysicsParticle physics010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyFOS: Physical sciencesFísicaObservableSupersymmetryParameter spaceType (model theory)01 natural sciencesSelectron tubeHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Seesaw mechanismSeesaw molecular geometry0103 physical sciencesHigh Energy Physics::ExperimentNeutrino010306 general physics

description

We calculate supersymmetric mass spectra with cMSSM boundary conditions and a type-I seesaw mechanism added to explain current neutrino data. Using published, estimated errors on SUSY mass observables for a combined LHC+ILC analysis, we perform a theoretical $\chi^2$ analysis to identify parameter regions where pure cMSSM and cMSSM plus seesaw type-I might be distinguishable with LHC+ILC data. The most important observables are determined to be the (left) smuon and selectron masses and the splitting between them, respectively. Splitting in the (left) smuon and selectrons is tiny in most of cMSSM parameter space, but can be quite sizeable for large values of the seesaw scale, $m_{SS}$. Thus, for very roughly $m_{SS} \ge 10^{14}$ GeV hints for type-I seesaw might appear in SUSY mass measurements. Since our numerical results depend sensitively on forecasted error bars, we discuss in some detail the accuracies, which need to be achieved, before a realistic analysis searching for signs of type-I seesaw in SUSY spectra can be carried out.

10.1007/jhep02(2012)112http://arxiv.org/abs/1112.4771