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Radiative Corrections to Chargino Production in Electron-Positron Collisions

Marco A. Diaz·Steve F. King·Douglas A. Ross
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Abstract

We discuss the one-loop radiative corrections to the reaction e^+ e^- -> X^+_a X^-_b, for a,b=1,2 where X^+_{1,2} are the charginos of the minimal supersymmetric standard model. We calculate the leading one loop radiative corrections involving loops of top, stop, bottom and sbottom quarks, working in the MS-bar scheme. At LEP2 we find positive radiative corrections typically of 10% to 15% and with a maximum value of approximately 30% if the squark mass parameters are of the order of 1 TeV. If \sqrt{s}=500 GeV we find smaller corrections but they can be also negative, with extreme values of 13% and -4%. For a center of mass given by \sqrt{s}=2 TeV we find larger corrections, with typical values between 20% and -20%.

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Marco A. Diaz, Steve F. King, Douglas A. Ross. 1997-11-12. Radiative Corrections to Chargino Production in Electron-Positron Collisions. https://doi.org/10.1016/s0550-3213(98)00611-7

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