Supersymmetric correction to top quark pair production near threshold

Shufang Su, Mark B. Wise

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We studied the leading supersymmetric contribution to top-antitop threshold production using the NRQCD framework. The one-loop matching to the potential and the Wilson coefficient of the leading 3S1 production current were considered. We point out that the leading correction to the potential is zero due to SU(3)c gauge invariance. This is true in general for any new physics that enters above the electroweak scale. The shape of the top quark pair production cross section is therefore almost unaffected near threshold, allowing a precise determination of the top quark mass based on the Standard Model calculations. The supersymmetric correction to the Wilson coefficient c1 of the production current decouples for heavy super particles. Its contribution is smaller than the Standard Model next-to-next-leading-log results.

Original languageEnglish (US)
Pages (from-to)205-210
Number of pages6
JournalPhysics Letters B
Volume510
Issue number1-4
DOIs
StatePublished - Jun 21 2001
Externally publishedYes

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pair production
quarks
thresholds
gauge invariance
coefficients
physics
cross sections

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Supersymmetric correction to top quark pair production near threshold. / Su, Shufang; Wise, Mark B.

In: Physics Letters B, Vol. 510, No. 1-4, 21.06.2001, p. 205-210.

Research output: Contribution to journalArticle

Su, Shufang ; Wise, Mark B. / Supersymmetric correction to top quark pair production near threshold. In: Physics Letters B. 2001 ; Vol. 510, No. 1-4. pp. 205-210.
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