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- W4236027344 abstract "The resummation of soft gluon exchange for QCD hard scattering requires a matrix of anomalous dimensions. We compute this matrix directly for arbitrary 2 {yields} n massless processes for the first time at two loops. Using color generator notation, we show that it is proportional to the one-loop matrix. This result reproduces all pole terms in dimensional regularization of the explicit calculations of massless 2 {yields} 2 amplitudes in the literature, and it predicts all poles at next-to-leading order in any 2 {yields} n process that has been computed at next-to-leading order. The proportionality of the one- and two-loop matrices makes possible the resummation in closed form of the next-to-next-to-leading logarithms and poles in dimensional regularization for the 2 {yields} n processes." @default.
- W4236027344 created "2022-05-12" @default.
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- W4236027344 date "2006-06-27" @default.
- W4236027344 modified "2023-09-29" @default.
- W4236027344 title "The Two-loop Anomalous Dimension Matrix for Soft Gluon Exchange" @default.
- W4236027344 doi "https://doi.org/10.2172/885280" @default.
- W4236027344 hasPublicationYear "2006" @default.
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