Abstract
We study the implications of dimension five operators involving Higgs chiral superfields for the masses of neutralinos and charginos in the minimal supersymmetric standard model (MSSM). These operators can arise from additional interactions beyond those of MSSM involving new degrees of freedom at or above the TeV scale. In addition to the masses of the neutralinos and charginos, we study the sum rules involving the masses and squared masses of these particles for different gaugino mass patterns in presence of the dimension five operators. We derive a relation for the higgsino mixing mass parameter and tanβ in the presence of the dimension five operators.
Highlights
Supersymmetry (SUSY) is a leading candidate [1] for physics beyond the Standard Model (SM)
The necessary SUSY breaking can be introduced through soft supersymmetry breaking terms that do not disturb the stability of the hierarchy between the weak scale and the large scale
The simplest implementation of the idea of low energy broken supersymmetry is the minimal supersymmetric standard model (MSSM) obtained by introducing the supersymmetric partners of the SM states, and introducing an additional Higgs doublet with opposite hypercharge to that of SM Higgs doublet, in order to cancel the gauge anomalies and generate masses for all the fermions of the Standard Model, with soft supersymmetry breaking terms generated by a suitable supersymmetry breaking mechanism [3]
Summary
Supersymmetry (SUSY) is a leading candidate [1] for physics beyond the Standard Model (SM). The allowed range of the lightest Higgs mass from the LHC experiments, which is of interest for supersymmetric models, extends from the LEP limit to around 130 GeV [9]. All this suggests that there may be additional degrees of freedom in the theory beyond those of the MSSM [10]. It has been shown that the dimension five operator in (I.1) raises the lightest Higgs boson mass of MSSM above the LEP limit without fine tuning, and, without loss of naturalness [10].
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