Implications of CTEQ global analysis for collider observables

Journal Article · Tue Jul 01 00:00:00 EDT 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.78.013004· OSTI ID:21250200

Nadolsky, Pavel M; Huston, Joey; Pumplin, Jon; Stump, Daniel; Yuan, C -P ^[1]; Lai, H -L ^[2]; Qinghong, Cao ^[3]; Tung, W -K ^[1]

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1. Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824-1116 (United States)
2. Taipei Municipal University of Education, Taipei, Taiwan (China)
3. Department of Physics and Astronomy, University of California at Riverside, Riverside, California 92521 (United States)

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 tt 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 tt 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.

• OSTI ID: 21250200
• Journal Information: Physical Review. D, Particles Fields, Vol. 78, Issue 1; Other Information: DOI: 10.1103/PhysRevD.78.013004; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BENCHMARKS
CERN LHC
CORRELATIONS
CROSS SECTIONS
DISTRIBUTION
DISTRIBUTION FUNCTIONS
FERMILAB TEVATRON
FORECASTING
GLOBAL ANALYSIS
GLUONS
HIGGS BOSONS
MASS
PARTICLE PRODUCTION
QUANTUM CHROMODYNAMICS
SCATTERING
STANDARD MODEL
SUPERSYMMETRY
T QUARKS
Z NEUTRAL BOSONS