Analytic integration of real-virtual counterterms in NNLO jet cross sections II
We present analytic expressions of all integrals required to complete the explicit evaluation of the real-virtual integrated counterterms needed to define a recently proposed subtraction scheme for jet cross sections at next-to-next-to-leading order in QCD. We use the Mellin-Barnes representation of...
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Veröffentlicht in: | arXiv.org 2009-05 |
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Hauptverfasser: | , , , |
Format: | Artikel |
Sprache: | eng |
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Online-Zugang: | Volltext |
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Zusammenfassung: | We present analytic expressions of all integrals required to complete the explicit evaluation of the real-virtual integrated counterterms needed to define a recently proposed subtraction scheme for jet cross sections at next-to-next-to-leading order in QCD. We use the Mellin-Barnes representation of these integrals in \(4-2\epsilon\) dimensions to obtain the coefficients of their Laurent expansions around \(\epsilon=0\). These coefficients are given by linear combinations of multidimensional Mellin-Barnes integrals. We compute the coefficients of such expansions in \(\epsilon\) both numerically and analytically by complex integration over the Mellin-Barnes contours. |
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ISSN: | 2331-8422 |
DOI: | 10.48550/arxiv.0905.4390 |