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Third-order correction to top-quark pair production near threshold I. Effective theory set-up and matching coefficients
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Third-order correction to top-quark pair production near threshold I. Effective theory set-up and matching coefficients
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This is the first in a series of papers, in which we compute the third-order QCD corrections to top-antitop production near threshold in e+ e- collisions. The present paper provides a detailed outline of the strategy of computation in the framework of non-relativistic effective theory and the threshold expansion, applicable more generally to heavy-quark pair production near threshold. It summarizes matching coefficients and potentials relevant to the next-to-next-to-next-to-leading order and ends with the master formula for the computation of the third-order Green function. The master formula is evaluated in part II of the series.
Forward citations
Cited by 2 Pith papers
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Self-consistent computation of pair production from non-relativistic effective field theories in the Keldysh-Schwinger formalism
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Threshold Top-Quark Pair-Production: Cross Sections and Key Uncertainties
Near-threshold top-quark pair production cross section at 13 TeV LHC is 11.67 pb with +1.43/-1.47 pb uncertainty, including NRQCD Green's function effects and comparison to POWHEG-BOX.
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