Complete one-loop calculation of electroweak supersymmetric effects in t-channel single top production at CERN LHC

被引:23
作者
Beccaria, M. [1 ,2 ]
Calame, C. M. Carloni [3 ]
Macorini, G. [4 ,5 ]
Mirabella, E. [6 ]
Piccinini, F. [7 ]
Renard, F. M. [8 ]
Verzegnassi, C. [4 ,5 ]
机构
[1] Univ Salento, Dipartimento Fis, I-73100 Lecce, Italy
[2] INFN, Sez Lecce, Rome, Italy
[3] Univ Southampton, Sch Phys & Astron, Southampton S017 1BJ, England
[4] Univ Trieste, Dipartimento Fis Teor, Trieste, Italy
[5] INFN, Sez Trieste, Trieste, Italy
[6] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany
[7] INFN, Sez Pavia, I-27100 Pavia, Italy
[8] Univ Montpellier 2, Lab Phys Theor & Astroparticules, UMR 5207, F-34095 Montpellier 5, France
来源
PHYSICAL REVIEW D | 2008年 / 77卷 / 11期
关键词
D O I
10.1103/PhysRevD.77.113018
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We have computed the complete one-loop electroweak effects in the minimal supersymmetric standard model 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 supersymmetry contribution is generally quite modest in the minimal supergravity scenario. The experimental observables would therefore only practically depend, in this framework, on the Cabibbo-Kobayashi-Maskawa Wtb coupling.
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页数:10
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