A critical appraisal and evaluation of modern PDFs

作者：Accardi, A.; Alekhin, S.; Blumlein, J.; Garzelli, M. V.; Lipka, K.; Melnitchouk, W.; Moch, S.^*; Owens, J. F.; Placakyte, R.; Reya, E.; Sato, N.; Vogt, A.; Zenaiev, O.

来源：European Physical Journal C, 2016, 76(8): 471.

DOI：10.1140/epjc/s10052-016-4285-4

• DEEP-INELASTIC-SCATTERING
• OPERATOR MATRIX-ELEMENTS
• HEAVY FLAVOR PRODUCTION
• HIGGS-BOSON PRODUCTION
• LONGITUDINAL STRUCTURE-FUNCTION
• 3-LOOP SPLITTING FUNCTIONS
• LOG RADIATIVE-CORRECTIONS
• PRODUCTION CROSS-SECTION
• STRUCTURE-FUNCTION F-2(X
• LEPTON CHARGE ASYMMETRY

We reviewthe present status of the determination of parton distribution functions (PDFs) in the light of the precision requirements for the LHC in Run 2 and other future hadron colliders. We provide brief reviews of all currently available PDF sets and use them to compute cross sections for a number of benchmark processes, including Higgs boson production in gluon-gluon fusion at the LHC. We show that the differences in the predictions obtained with the various PDFs are due to particular theory assumptions made in the fits of those PDFs. We discuss PDFuncertainties in the kinematic region covered by the LHC and on averaging procedures for PDFs, such as advocated by the PDF4LHC15 sets, and provide recommendations for the usage of PDF sets for theory predictions at the LHC.

• 出版日期2016-8-23