NNLL resummation for stop pair-production at the LHC

Wim Beenakker; Christoph Borschensky; Raphael Heger; Michael Krämer; Anna Kulesza; Eric Laenen

doi:10.1007/JHEP05(2016)153

NNLL resummation for stop pair-production at the LHC

Wim Beenakker, Christoph Borschensky, Raphael Heger, Michael Krämer, Anna Kulesza, Eric Laenen

Research output: Contribution to journal › Article › Academic › peer-review

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-to-next-to-leading logarithmic (NNLL) accuracy in the Mellin-space approach. Additionally, corrections to the hard-matching coefficient at one-loop and Coulomb contributions at two-loop 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 predictions at next-to-leading logarithmic (NLL) accuracy. Furthermore, a slight increase in the dependence on the additional stop-mixing parameters is observed.

Original language	Undefined/Unknown
Pages (from-to)	1-23
Journal	Journal of High Energy Physics
Volume	153
DOIs	https://doi.org/10.1007/JHEP05(2016)153
Publication status	Published - 12 Jan 2016

Bibliographical note

24 pages, 7 figures; version published in JHEP

Keywords

hep-ph

Access to Document

10.1007/JHEP05(2016)153

nnllFinal published version, 569 KB

Cite this

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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-to-next-to-leading logarithmic (NNLL) accuracy in the Mellin-space approach. Additionally, corrections to the hard-matching coefficient at one-loop and Coulomb contributions at two-loop 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 predictions at next-to-leading logarithmic (NLL) accuracy. Furthermore, a slight increase in the dependence on the additional stop-mixing parameters is observed.",

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AU - Beenakker, Wim

AU - Borschensky, Christoph

AU - Heger, Raphael

AU - Krämer, Michael

AU - Kulesza, Anna

AU - Laenen, Eric

N1 - 24 pages, 7 figures; version published in JHEP

PY - 2016/1/12

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AB - The production of supersymmetric stop-antistop pairs at the Large Hadron Collider (LHC) is studied including corrections from soft-gluon resummation up to next-to-next-to-leading logarithmic (NNLL) accuracy in the Mellin-space approach. Additionally, corrections to the hard-matching coefficient at one-loop and Coulomb contributions at two-loop 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 predictions at next-to-leading logarithmic (NLL) accuracy. Furthermore, a slight increase in the dependence on the additional stop-mixing parameters is observed.

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