Implications of CTEQ global analysis for collider observables

被引：1029

作者：

Nadolsky, Pavel M. ^{[1
]}

Lai, Hung-Liang ^{[2
,3
]}

Cao, Qing-Hong ^{[4
]}

Huston, Joey ^{[1
]}

Pumplin, Jon ^{[1
]}

Stump, Daniel ^{[1
]}

Tung, Wu-Ki ^{[1
,3
]}

Yuan, C. -P. ^{[1
]}

机构：

[1] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[2] Taipei Municipal Univ Educ, Taipei, Taiwan

[3] Univ Washington, Dept Phys, Seattle, WA 98105 USA

[4] Univ Calif Riverside, Dept Phys & Astron, Riverside, CA 92521 USA

来源：

PHYSICAL REVIEW D | 2008年 / 78卷 / 01期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevD.78.013004

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The latest CTEQ6.6 parton distributions, obtained by global analysis of hard-scattering data in the framework of general-mass perturbative QCD, are employed to study theoretical predictions and their uncertainties for significant processes at the Fermilab Tevatron and CERN Large Hadron Collider. The previously observed increase in predicted cross sections for the standard-candle W and Z boson production processes in the general-mass scheme (compared to those in the zero-mass scheme) is further investigated and quantified. A novel method to constrain parton distribution function (PDF) uncertainties in LHC observables, by effectively exploiting PDF-induced correlations with benchmark standard model cross sections, is presented. Using this method, we show that the t (t) over bar cross section can potentially serve as a standard-candle observable for the LHC processes dominated by initial-state gluon scattering. Among other benefits, precise measurements of t (t) over bar cross sections would reduce PDF uncertainties in predictions for single top-quark and Higgs boson production in the standard model and minimal supersymmetric standard model.

引用

页数：21

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