2016
DOI: 10.1007/jhep05(2016)153
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NNLL resummation for stop pair-production at the LHC

Abstract: The production of supersymmetric stop-antistop pairs at the Large Hadron Collider (LHC) is studied including corrections from soft-gluon resummation up to next-tonext-to-leading logarithmic (NNLL) accuracy in the Mellin-space approach. Additionally, corrections to the hard-matching coefficient at one-loop and Coulomb contributions at twoloop order are considered. The NNLL corrections enhance the cross section for all stop masses at centre-of-mass energies of 8 and 13 TeV compared to the previously calculated p… Show more

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Cited by 75 publications
(77 citation statements)
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“…The corresponding analytical formulae are available in the literature [37][38][39] and are collected here to make the paper self-contained. Similar calculations, based on full NLO SUSY-QCD calculations [40,41], have also been performed previously for squarks and gluinos [42] and stops [43] and are available through the public code NNLL-fast [44].…”
Section: Introductionmentioning
confidence: 99%
“…The corresponding analytical formulae are available in the literature [37][38][39] and are collected here to make the paper self-contained. Similar calculations, based on full NLO SUSY-QCD calculations [40,41], have also been performed previously for squarks and gluinos [42] and stops [43] and are available through the public code NNLL-fast [44].…”
Section: Introductionmentioning
confidence: 99%
“…For these reasons, we choose not to include this new contribution to our stop pair production cross section. Instead, we compute the cross section for this process using NLL-fast [56][57][58] and NNLL-fast [56,57,59,60] for centre of mass energies of 8 and 13 TeV, respectively. We verify the results using Prospino [61].…”
Section: Stop Productionmentioning
confidence: 99%
“…We find that the NNLL corrections are positive and significantly enhance the NLO+NLL cross sections. The importance of the NNLL threshold corrections increases with increasing final-state particle masses, as discussed in [53,55]. The contributions from Coulomb resummation and bound states are also positive and result in a slight further increase of the K-factors.…”
Section: Numerical Resultsmentioning
confidence: 87%