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Testing coupling relations in SUSY-QCD at a Linear Collider

A. Brandenburg·M. Maniatis·M. M. Weber
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Abstract

Supersymmetry predicts that gauge couplings are equal to the corresponding gaugino-sfermion-fermion Yukawa couplings. This prediction can be tested for the QCD sector of the MSSM by studying the processes eplus+eminus -> squark+antisquark+gluon and eplus+eminus -> squark+antiquark+gluino at a future linear collider. We present results for these processes at next-to-leading order in alpha_s in the framework of the MSSM. We find sizable SUSY-QCD corrections. The renormalization scale dependence is significantly reduced at next-to-leading order.

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A. Brandenburg, M. Maniatis, M. M. Weber. 2002-07-23. Testing coupling relations in SUSY-QCD at a Linear Collider. https://arxiv.org/abs/hep-ph/0207278

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