Full $\mathcal{O}(\ensuremath{\alpha})$ corrections to ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{\stackrel{\texttildelow{}}{f}}_{i}{\overline{\stackrel{\texttildelow{}}{f}}}_{j}$

Full $O (α)$ corrections to $e^{+} e^{-} \to {\tilde{f}}_{i} {\bar{\tilde{f}}}_{j}$

K. Kovařík, C. Weber, H. Eberl, and W. Majerotto

Phys. Rev. D 72, 053010 – Published 22 September 2005

Abstract

We present a complete precision analysis of the sfermion pair production process $e^{+} e^{-} \to {\tilde{f}}_{i} {\bar{\tilde{f}}}_{j} (f = t, b, τ, ν_{τ})$ in the minimal supersymmetric standard model. Our results extend the previously calculated weak corrections by including all one-loop corrections together with higher order QED corrections. We present the details of the analytical calculation and discuss the renormalization scheme. The numerical analysis shows the results for total cross sections, forward-backward, and left-right asymmetries. It is based on the $SPS 1 a^{'}$ point from the SPA project. The complete corrections are about 10% and have to be taken into account in a high precision analysis.

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Received 3 June 2005

DOI:https://doi.org/10.1103/PhysRevD.72.053010

Authors & Affiliations

K. Kovařík^*

Institut für Hochenergiephysik der Österreichischen Akademie der Wissenschaften, A-1050 Vienna, Austria
and Department of Theoretical Physics, FMFI UK Comenius University, SK-84248 Bratislava, Slovakia

C. Weber^†, H. Eberl^‡, and W. Majerotto^§

Institut für Hochenergiephysik der Österreichischen Akademie der Wissenschaften, A-1050 Vienna, Austria

^*Electronic address: kovarik@hephy.oeaw.ac.at
^†Electronic address: weber@hephy.oeaw.ac.at
^‡Electronic address: helmut@hephy.oeaw.ac.at
^§Electronic address: majer@hephy.oeaw.ac.at

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Vol. 72, Iss. 5 — 1 September 2005

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Physical Review D

covering particles, fields, gravitation, and cosmology

Full $O (α)$ corrections to $e^{+} e^{-} \to {\tilde{f}}_{i} {\bar{\tilde{f}}}_{j}$

K. Kovařík, C. Weber, H. Eberl, and W. Majerotto

Phys. Rev. D 72, 053010 – Published 22 September 2005

Abstract

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Physical Review D

covering particles, fields, gravitation, and cosmology

Full O(α) corrections to e+e−→f˜if˜¯j

K. Kovařík, C. Weber, H. Eberl, and W. Majerotto

Phys. Rev. D 72, 053010 – Published 22 September 2005

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Full $O (α)$ corrections to $e^{+} e^{-} \to {\tilde{f}}_{i} {\bar{\tilde{f}}}_{j}$