Radiative corrections to scalar-fermion pair production in high energy e+e- collisions

Abstract

We study the one-loop radiative corrections to pair production of the supersymmetric scalar partners of the standard fermions in e+e- annihilation. Both electroweak and SUSY-QCD corrections are considered. Applications are for production of scalar fermions of the third generation, $e^+e^-\to \wt{f}_i \wt{f}_j^*$ (i,j=1,2), $f=t,b,\tau$, as well as for production of scalar quarks of the first and second generation. Effects on integrated cross sections are discussed and also the one-loop induced forward-backward asymmetries are studied. It is found that at low energy, \sqrt{s}\approx 500 \to 1000 GeV, the corrections are dominated by the QCD contributions, At high energy, $\sqrt{s}\ge 2$ TeV, the electroweak box diagrams give a substantial contribution and even dominate in some regions of parameters space. The purely loop-induced forward-backward asymmetry can reach values of several per cent.

23 pages, latex, 13 figures

References in corpus (4)

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• Sudakov expansions at one loop and beyond for charged scalar and fermion pair production in SUSY models at future Linear Colliders
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• One-loop calculations of the decay of the next-to-lightest neutralino in the MSSM
• One-loop calculations for SUSY processes
• Towards Measuring the Stop Mixing Angle at the LHC
• Full O(alpha) corrections to e+e- -> sf_i sf_j
• Strongly first-order electroweak phase transition by relatively heavy additional Higgs bosons
• Sneutrino Production at e+e- Linear Colliders: Addendum to Slepton Production
• Third generation sfermions decays into Z and W gauge bosons: full one-loop analysis
• Slepton Production at e+e- Colliders in the Complex MSSM: A Full One-Loop Analysis
• A Method for the Precision Mass Measurement of the Stop Quark at the International Linear Collider
• Full one-loop QCD and electroweak corrections to sfermion pair production in $\gamma \gamma$ collisions