NNLL resummation for squark-antisquark pair production at the LHC
W. BeenakkerTheoretical High Energy Physics, IMAPP, Faculty of Science, Mailbox 79, Radboud University Nijmegen, P.O. Box 9010, NL-6500 GL, Nijmegen, The NetherlandsSilja BrensingMichael KrämerInstitute for Theoretical Particle Physics and Cosmology, RWTH Aachen University, D-52056, Aachen, GermanyAnna KuleszaInstitute for Theoretical Particle Physics and Cosmology, RWTH Aachen University, D-52056, Aachen, GermanyEric LaenenITF, Utrecht University, Leuvenlaan 4, 3584 CE, Utrecht, The NetherlandsIrene NiessenTheoretical High Energy Physics, IMAPP, Faculty of Science, Mailbox 79, Radboud University Nijmegen, P.O. Box 9010, NL-6500 GL, Nijmegen, The Netherlands
2012en
ABI
Abstract
A bstract We consider the resummation of soft gluon emission for squark-antisquark pair-production at the LHC at next-to-next-to-leading-logarithmic (NNLL) accuracy in the framework of the minimal supersymmetric standard model. We present the analytical ingredients needed for the calculation and provide numerical predictions for the LHC at centre-of-mass energies of 7 and 14 TeV. We find a significant reduction in the scale uncertainty and a considerable increase in the prediction of the total cross section. Compared to the next-to-leading order prediction, the corrections increase the cross section by up to 30% for 1.5 TeV squarks at a centre-of-mass energy of 7 TeV.
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Cited by 40 references