NNNLO results on top-quark pair production near threshold
classification
✦ hep-ph
keywords
nearnnnloproductionresultsthresholdcorrectionscrosserror
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We present new results on the NNNLO top-antitop production cross section near threshold from potential and ultrasoft gluon corrections. The new non-logarithmic third-order terms are in the 10% range and lead to a significant reduction in the theoretical error.
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