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Towards NNLL resummation: hard matching coefficients for squark and gluino hadroproduction

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arxiv 1304.6354 v2 pith:W27TGXP7 submitted 2013-04-23 hep-ph

Towards NNLL resummation: hard matching coefficients for squark and gluino hadroproduction

W. Beenakker , T. Janssen , S. Lepoeter , M. Kr\"amer , A. Kulesza , E. Laenen , I. Niessen , S. Thewes
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T. Van Daal
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classification hep-ph
keywords coefficientshardmatchinggluinohadroproductionimpactresummationsquark
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present the hard matching coefficients for squark and gluino hadroproduction. The hard matching coefficients follow from the next-to-leading order cross section near threshold and are an important ingredient for performing threshold resummation at next-to-next-to-leading logarithmic accuracy. We discuss the calculation, list the analytical results and study the numerical impact of these corrections. We find that the impact of the hard matching coefficients can be considerable, with the largest effect observed for final states involving gluinos.

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