NNLL resummation for squark and gluino production at the LHC
W. BeenakkerInstitute of Physics, University of Amsterdam, Science Park 904, Amsterdam, 1018 XE, The NetherlandsChristoph BorschenskyInstitute for Theoretical Physics, WWU Münster, Wilhelm-Klemm-Str. 9, Münster, D-48149, GermanyMichael KrämerInstitute for Theoretical Particle Physics and Cosmology, RWTH Aachen University, Sommerfeldstr. 16, Aachen, D-52074, GermanyAnna KuleszaInstitute for Theoretical Physics, WWU Münster, Wilhelm-Klemm-Str. 9, Münster, D-48149, GermanyEric LaenenITF, Utrecht University, Leuvenlaan 4, Utrecht, 3584 CE, The NetherlandsVincent TheeuwesInstitute for Theoretical Physics, WWU Münster, Wilhelm-Klemm-Str. 9, Münster, D-48149, GermanySilja Thewes
2014en
ABI
Abstract
We perform the resummation of soft-gluon emissions for squark and gluino production at next-to-next-to-leading logarithmic (NNLL) accuracy. We include also the one-loop hard matching coefficients as well as Coulomb corrections to second order, using Mellin-moment methods. We study the characteristics of this resummation in detail for a centre-of-mass (CM) energy of 8 TeV at the LHC, and for squark and gluino masses up to 2.5 TeV. We find significant enhancing effects for all four processes of squark- and gluinopair production. Scale dependence is generally reduced compared to NLL resummation, except for gluino-pair production where we find a moderate enhancement.
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Cited by 30 references