H. Eberl

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High-precision analyses of supersymmetry parameters aim at reconstructing the fundamental supersymmetric theory and its breaking mechanism. A well defined theoretical framework is needed when higher-order corrections are included. We propose such a scheme, Supersymmetry Parameter Analysis SPA, based on a consistent set of conventions and input parameters. A(More)
Introduction Quantum Key Distribution (QKD) or "quantum cryptography" is a Quantum Mechanics based cryptographic primitive, which, in principle, holds the potential of absolutely secure communication, which can not be compromised by any eavesdropping technique. The strength of the QKD primitive is the simultaneous generation of two identical bit streams at(More)
We summarize the current status and future prospects for low energy (weak scale) supersymmetry. In particular, we evaluate the capabilities of various e + e ? , p p and pp colliders to discover evidence for supersymmetric particles. Furthermore, assuming supersymmetry is discovered, we discuss capabilities of future facilities to disentangle the anticipated(More)
The proposed International Linear Collider (ILC) is well-suited for discovering physics beyond the Standard Model and for precisely unraveling the structure of the underlying physics. The physics return can be maximized by the use of polarized beams. This report shows the paramount role of polarized beams and summarizes the benefits obtained from polarizing(More)
Analysis of the chargino and neutralino mass parameters at one–loop level Abstract In the Minimal Supersymmetric Standard Model (MSSM) the masses of the neutralinos and charginos depend on the gaugino and higgsino mass parameters M , M ′ and µ. If supersymmetry is realized, the extraction of these parameters from future high energy experiments will be(More)
We calculate the supersymmetric O(α s) QCD corrections to the decays˜q i → q ′ ˜ χ ± j (i, j = 1, 2) and˜q i → q ˜ χ 0 k (k = 1,. .. 4) within the Minimal Supersymmetric Standard Model. In particular we consider the decays of squarks of the third generation, ˜ t i and˜b i (i = 1, 2), where the left–right mixing must be taken into account. The corrections(More)
We present a high precision calculation of chargino and neutralino pair production at e + e − colliders. Within the Minimal Supersymmetric Standard Model, the full one-loop and higher order QED corrections are included. Special care has been taken in the definition of the Lagrangian input parameters. Furthermore, the proper inclusion of QED corrections and(More)
We discuss production and decays of stops, sbottoms, τ-sneutrinos, and staus in e + e − annihilation in the energy range √ s = 0.5 − 1 TeV. We present numerical predictions within the Minimal Supersymmetric Standard Model for cross sections and decay rates, including one–loop radiative corrections as well as initial state radiation. We also study the(More)