New parton distribution functions from a global analysis of quantum chromodynamics

Dulat Sayipjamal; Hou Tie-Jiun; Gao JunGuzzi MarcoHuston JoeyNadolsky PavelPumplin JonSchmidt CarlStump DanielYuan C. -P.

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New parton distribution functions from a global analysis of quantum chromodynamics

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We present new parton distribution functions (PDFs) at next-to-next-to-leading order (NNLO) from the CTEQ-TEA global analysis of quantum chromodynamics. These differ from previous CT PDFs in several respects, including the use of data from LHC experiments and the new D0 charged-lepton rapidity asymmetry data, as well as the use of a more flexible parametrization of PDFs that, in particular, allows a better fit to different combinations of quark flavors. Predictions for important LHC processes, especially Higgs boson production at 13 TeV, are presented. These CT14 PDFs include a central set and error sets in the Hessian representation. For completeness, we also present the CT14 PDFs determined at the LO and the NLO in QCD. Besides these general-purpose PDF sets, we provide a series of (N) NLO sets with various as values and additional sets in general-mass variable flavor number schemes, to deal with heavy partons, with up to three, four, and six active flavors.

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《Physical review, D. Covering particles,fields,gravitation,and cosmology》 |2016年第3期|共39页
作者
Dulat Sayipjamal; Hou Tie-Jiun; Gao JunGuzzi MarcoHuston JoeyNadolsky PavelPumplin JonSchmidt CarlStump DanielYuan C. -P.;
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Xinjiang Univ, Sch Phys Sci & Technol, Urumqi 830046, Xinjiang, Peoples R China;

So Methodist Univ, Dept Phys, Dallas, TX 75275 USA;

Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USAUniv Manchester, Sch Phys & Astron, Manchester M13 9PL, Lancs, EnglandMichigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA;

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中图分类粒子物理学;场论;
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New parton distribution functions from a global analysis of quantum chromodynamics

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