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arXiv · 0804.4004

Ultrasoft contribution to heavy-quark pair production near threshold

M. Beneke·Y. Kiyo
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Abstract

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.

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M. Beneke, Y. Kiyo. 2008-04-24. Ultrasoft contribution to heavy-quark pair production near threshold. https://doi.org/10.1016/j.physletb.2008.08.031

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