Parton distribution functions at LO, NLO and NNLO with correlated uncertainties between orders

被引：10

作者：

Belov, P. ^{[1
]}

Britzger, D. ^{[1
]}

Camarda, S. ^{[1
]}

Cooper-Sarkar, A. M. ^{[2
]}

Diaconu, C. ^{[3
]}

Feltesse, J. ^{[12
]}

Gizhko, A. ^{[1
]}

Glazov, A. ^{[1
]}

Kolesnikov, V. ^{[4
]}

Lohwasser, K. ^{[13
]}

Luszczak, A. ^{[5
]}

Myronenko, V. ^{[1
]}

Pirumov, H. ^{[1
]}

Placakyte, R. ^{[1
]}

Rabbertz, K. ^{[6
]}

Radescu, V. ^{[1
]}

Sapronov, A. ^{[4
]}

Schoening, A. ^{[10
]}

Shushkevich, S. ^{[1
]}

Slominski, W. ^{[7
]}

Starovoitov, P. ^{[1
]}

Sutton, M. ^{[8
]}

Tomaszewska, J. ^{[9
]}

Turkot, O. ^{[1
]}

Watt, G. ^{[11
]}

Wichmann, K. ^{[1
]}

Lisovyi, M. ^{[1
]}

机构：

[1] DESY, Hamburg, Germany

[2] Univ Oxford, Dept Phys, Oxford, England

[3] Univ Mediterranee, CNRS, IN2P3, CPPM, Marseille, France

[4] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia

[5] T Kosciuszko Cracow Univ Technol, Krakow, Poland

[6] Univ Karlsruhe, Inst Expt Kernphys, Karlsruhe, Germany

[7] Jagiellonian Univ, Inst Phys, PL-30059 Krakow, Poland

[8] Univ Sussex, Dept Phys & Astron, Brighton BN1 9RH, E Sussex, England

[9] Warsaw Univ Technol, Fac Phys, PL-00662 Warsaw, Poland

[10] Heidelberg Univ, Inst Phys, Heidelberg, Germany

[11] Univ Durham, Inst Particle Phys Phenomenol, Durham DH1 3LE, England

[12] CE Saclay, DSM Irfu, CEA, Gif Sur Yvette, France

[13] DESY, D-15738 Zeuthen, Germany

来源：

EUROPEAN PHYSICAL JOURNAL C | 2014年 / 74卷 / 10期

关键词：

3-LOOP SPLITTING FUNCTIONS; INELASTIC EP SCATTERING; QCD; DENSITIES; EVOLUTION;

D O I：

10.1140/epjc/s10052-014-3039-4

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：

Sets of parton distribution functions (PDFs) of the proton are reported for the leading (LO), next-to-leading (NLO) and next-to-next-to-leading-order (NNLO) QCD calculations. The parton distribution functions are determined with the HERAFitter program using the data from the HERA experiments and preserving correlations between uncertainties for the LO, NLO and NNLO PDF sets. The sets are used to study cross-section ratios and their uncertainties when calculated at different orders in QCD. A reduction of the overall theoretical uncertainty is observed if correlations between the PDF sets are taken into account for the ratio of WW di-boson to Z boson production cross sections at the LHC.

引用

页码：1 / 10

页数：10

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