Towards NNLL resummation: hard matching coefficients for squark and gluino hadroproduction
W. BeenakkerTheoretical High Energy Physics, IMAPP, Faculty of Science, Radboud University Nijmegen, Mailbox 79, P.O. Box 9010, NL-6500 GL, Nijmegen, The NetherlandsTim JanssenTheoretical High Energy Physics, IMAPP, Faculty of Science, Radboud University Nijmegen, Mailbox 79, P.O. Box 9010, NL-6500 GL, Nijmegen, The NetherlandsSusanne LepoeterTheoretical High Energy Physics, IMAPP, Faculty of Science, Radboud University Nijmegen, Mailbox 79, P.O. Box 9010, NL-6500 GL, Nijmegen, The NetherlandsMichael KrämerInstitute for Theoretical Particle Physics and Cosmology, RWTH Aachen University, D-52056, Aachen, GermanyAnna KuleszaInstitute for Theoretical Physics, University of Münster, D-48149, Münster, GermanyEric LaenenInstitute for Theoretical Physics (ITF), Utrecht University, Leuvenlaan 4, 3584 CE, Utrecht, The NetherlandsIrene NiessenTheoretical High Energy Physics, IMAPP, Faculty of Science, Radboud University Nijmegen, Mailbox 79, P.O. Box 9010, NL-6500 GL, Nijmegen, The NetherlandsSilja ThewesTom van DaalTheoretical High Energy Physics, IMAPP, Faculty of Science, Radboud University Nijmegen, Mailbox 79, P.O. Box 9010, NL-6500 GL, Nijmegen, The Netherlands
2013en
ABI
Annotatsiya
A bstract 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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