NNLL resummation for stop pair-production at the LHC

被引：56

作者：

Beenakker, Wim ^{[1
,2
]}

Borschensky, Christoph ^{[3
]}

Heger, Raphael ^{[3
]}

Kraemer, Michael ^{[4
]}

Kulesza, Anna ^{[3
]}

Laenen, Eric ^{[5
,6
,7
]}

机构：

[1] Radboud Univ Nijmegen, Fac Sci, IMAPP, Theoret High Energy Phys, Mailbox 79,POB 9010, NL-6500 GL Nijmegen, Netherlands

[2] Univ Amsterdam, Inst Phys, Amsterdam, Netherlands

[3] WWU Munster, Inst Theoret Phys, D-48149 Munster, Germany

[4] Rhein Westfal TH Aachen, Inst Theoret Particle Phys & Cosmol, D-52056 Aachen, Germany

[5] Univ Amsterdam, ITFA, Sci Pk 904, NL-1018 XE Amsterdam, Netherlands

[6] Univ Utrecht, ITF, Leuvenlaan 4, NL-3584 CE Utrecht, Netherlands

[7] Nikhef Theory Grp, Sci Pk 105, NL-1098 XG Amsterdam, Netherlands

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2016年 / 05期

关键词：

Supersymmetry Phenomenology; PARTON DISTRIBUTIONS; SUPERSYMMETRY; SEARCH; SQUARK; EVOLUTION;

D O I：

10.1007/JHEP05(2016)153

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

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 13TeV 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.

引用

页码：1 / 24

页数：24

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