Towards NNLL resummation: hard matching coefficients for squark and gluino hadroproduction

被引：58

作者：

Beenakker, Wim ^{[1
]}

Janssen, Tim ^{[1
]}

Lepoeter, Susanne ^{[1
]}

Kraemer, Michael ^{[2
]}

Kulesza, Anna ^{[3
]}

Laenen, Eric ^{[4
,5
,6
]}

Niessen, Irene ^{[1
]}

Thewes, Silja ^{[7
]}

Van Daal, Tom ^{[1
]}

机构：

[1] Radboud Univ Nijmegen, Fac Sci, IMAPP, NL-6500 GL Nijmegen, Netherlands

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

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

[4] Univ Amsterdam, Inst Theoret Phys ITFA, NL-1018 XE Amsterdam, Netherlands

[5] Univ Utrecht, Inst Theoret Phys ITF, NL-3584 CE Utrecht, Netherlands

[6] Nikhef Theory Grp, NL-1098 XG Amsterdam, Netherlands

[7] DESY, Theory Grp, D-22603 Hamburg, Germany

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2013年 / 10期

关键词：

Resummation; Supersymmetric Standard Model; QCD; PARTON DISTRIBUTIONS; PAIR PRODUCTION; QCD; SUPERSYMMETRY; EVOLUTION; SEARCH;

D O I：

10.1007/JHEP10(2013)120

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：

We present the hard matching coefficients for squark and gluino hadroproduction. The hard matching coefficients follow from the next-to-leading order cross section near threshold and are an important ingredient for performing threshold resummation at next-to-next-to-leading logarithmic accuracy. We discuss the calculation, list the analytical results and study the numerical impact of these corrections. We find that the impact of the hard matching coefficients can be considerable, with the largest effect observed for final states involving gluinos.

引用

页数：26

共 52 条

[1]

[Anonymous], JHEP

[2]

[Anonymous], 2012, JHEP, V10

[3]

[Anonymous], JHEP

[4]

[Anonymous], JHEP

[5]

[Anonymous], JHEP

[6]

[Anonymous], ARXIV09010512

[7]

[Anonymous], ATLASCONF2012109

[8]

[Anonymous], 1996, PROSPINO PROGRAM PRO

[9]

ATLAS Collaboration, 2013, PHYS REV D, V87

[10] Precision gluino mass at the CERN LHC in supersymmetric models with decoupled scalars [J].

Baer, Howard ;

Barger, Vernon ;

Shaughnessy, Gabe ;

Summy, Heaya ;

Wang, Lian-Tao .

PHYSICAL REVIEW D, 2007, 75 (09)

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