The low energy effective action of string theory depends strongly on the process of compactification and the localization of fields in extra dimensions. Explicit string constructions towards the minimal supersymmetric standard model (MSSM) reveal interesting results leading to the concept of local grand unification. Properties of the MSSM indicate that we might live at a special location close ...

We investigate the sensitivity of observables measurable in e+e−, γγ and μ+μ− collisions for distinguishing the properties of the light neutral CP-even Higgs boson in the minimal supersymmetric extension of the Standard Model (MSSM) from those of a Standard Model (SM) Higgs boson with the same mass. We explore first the available parameter space in the constrained MSSM (CMSSM), with universal s...

We evaluate O(αbαs) corrections in the Higgs boson sector of the CP-conserving MSSM, generalising the known result in the literature to arbitrary values of tanβ. A detailed analysis of the renormalisation in the bottom/scalar bottom sector is performed. Concerning the lightest MSSM Higgs boson mass, we find relatively small corrections for positive μ, while for μ < 0 the genuine two-loop O(αbαs...

A bstract In this work, we analyse and demonstrate possible strategies to explore extended Higgs sector of the Minimal Supersymmetric Standard Model (MSSM). particular concentrate on heavy decays electroweakinos. We electroweakino in allowed MSSM parameter space after taking into account 13 TeV LHC searches for supersymmetric particles phenomenological constraints such as flavour physics, measu...

Quark confinement in MSSM QCD as a consequence of supersymmetry and instanton effects. Abstract It is shown, that instanton effects naturally produce quark confinement in MSSM QCD. The confinement scale, calculated from the first principles, is in a good agreement with the experimental data. The proposed explanation is quite different from the dual Higgs mechanism.

We calculate the full one-loop SUSY-QCD corrections to stop annihilation into gluons and light quarks including Sommerfeld enhancement effect discuss their impact on neutralino relic density in MSSM.

The expected SUSY discovery potential of the CMS experiment at LHC is described, both in the MSSM and in the more constrained framework of mSugra, with emphasis on inclusive searches, the MSSM Higgs sector, and one example of complete reconstruction of a SUSY decay chain. Presented at SUGRA20, Boston, USA, 17-21 March, 2003.