Physical gluons and high-E-T jets
Change log
Authors
Martin, AD
Roberts, RG
Stirling, WJ
Thorne, RS
Abstract
We propose a more physical parameterization of the gluon distribution for global parton analyses of deep inelastic and related hard scattering data. In the new parameterization the gluon distribution at large x in the MS-scheme is driven by the valence quarks, which naturally produces a shoulder-like form at high x, and hence produces a better description of the Tevatron inclusive jet data. We perform the new analysis at both NLO and NNLO. The improvement is found to be even better at NNLO than at NLO. We make available the new sets of NLO and NNLO partons, which we denote by MRST2004.
Description
Keywords
DEEP-INELASTIC-SCATTERING, 3-LOOP SPLITTING FUNCTIONS, LARGE TRANSVERSE-MOMENTUM, PARTON DISTRIBUTIONS, CROSS-SECTIONS, NNLO EVOLUTION, QCD, PROTON, UNCERTAINTIES, PREDICTIONS
Journal Title
PHYS LETT B
Conference Name
Journal ISSN
0370-2693
1873-2445
1873-2445
Volume Title
Publisher
Elsevier BV