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1. chinaXiv:201605.01792 [pdf]

Supersymmetric electroweak corrections to single top quark production at the Fermilab Tevatron

Li, CS; Oakes, RJ; Yang, JM; Zhou, HY
Subjects: Physics >> The Physics of Elementary Particles and Fields

We calculate the O(alpha(cw)M(t)(2)/M-W(2)) supersymmetric (SUSY) electroweak corrections to single top quark production via --> at the Fermilab Tevatron in the minimal supersymmetric model. The supersymmetric electroweak corrections to the cross section are at most a few percent for tan beta > 1, but can exceed 10% for tan beta < 1. The combined effects of SUSY electroweak corrections and the Yukawa corrections can exceed 10% for favorable parameter values, which might be observable at a high-luminosity Tevatron.

submitted time 2016-05-16 Hits623Downloads318 Comment 0

2. chinaXiv:201605.01790 [pdf]

One-loop QCD corrections to top quark decay into a neutralino and light stop squark

Li, CS; Oakes, RJ; Yang, JM; Zhou, HY
Subjects: Physics >> The Physics of Elementary Particles and Fields

We calculate the one-loop QCD corrections to t-->(t) over tilde(1)<(chi)over tilde>(0)(j) using the dimensional reduction scheme, including QCD and supersymmetric QCD corrections. The analytic expressions for the corrections to the decay width are given, which can easily be extended to t--><(chi)over tilde>(+)(j)(b) over tilde(i). The numerical results show that the correction amounts to more than a 10% reduction in the partial width relative to the tree level result. We also compare the corrections in the no-mixing top squark case with those in the mixing top squark case.

submitted time 2016-05-16 Hits452Downloads227 Comment 0

3. chinaXiv:201605.01788 [pdf]

Supersymmetric QCD corrections to single top quark production at the Fermilab tevatron

Li, CS; Oakes, RJ; Yang, JM; Zhou, HY
Subjects: Physics >> The Physics of Elementary Particles and Fields

We evaluate the supersymmetric QCD corrections to single top quark production via q (q) over bar'-->t (b) over bar at the Fermilab Tevatron in the minimal supersymmetric model. We find that within the allowed range of squark and gluino masses the supersymmetric QCD corrections can enhance the cross section by a few percent. The combined effects of SUSY QCD, SUSY EW, and the Yukawa couplings can exceed 10% for the smallest allowed tan beta(similar or equal to 0.25) but are only a few percent for tan beta>1.

submitted time 2016-05-16 Hits493Downloads245 Comment 0

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