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26 April 2024

» arxiv » 0802.1994

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A complete one-loop calculation of electroweak supersymmetric effects in $t$-channel single top production at LHC
M. Beccaria ; C. M. Carloni Calame ; G. Macorini ; E. Mirabella ; F. Piccinini ; F. M. Renard ; C. Verzegnassi ;
Date:	14 Feb 2008
Abstract:	We have computed the complete one-loop electroweak effects in the MSSM for single top (and single antitop) production in the $t$-channel at hadron colliders, generalizing a previous analysis performed for the dominant $dt$ final state and fully including QED effects. The results are quite similar for all processes. The overall Standard Model one-loop effect is small, of the few percent size. This is due to a compensation of weak and QED contributions that are of opposite sign. The genuine SUSY contribution is generally quite modest in the mSUGRA scenario. The experimental observables would therefore only practically depend, in this framework, on the CKM $Wtb$ coupling.
Source:	arXiv, 0802.1994
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