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Ultrasoft contribution to heavy-quark pair production near threshold
2008
Physics Letters B
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We compute the third-order correction to the heavy-quark current correlation function due to the emission and absorption of an ultrasoft gluon. Our result supplies a missing contribution to top-quark pair production near threshold and the determination of the bottom quark mass from QCD sum rules.
doi:10.1016/j.physletb.2008.08.031
fatcat:2wfj6wqkfndpnnineuqtqk3eu4