QCD phenomenology of parton distribution functions at small x

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The small x behavior of parton distributions is studied phenomenologically by examining in detail a series of QCD-evolved distribution sets obtained in a new global analysis of deep inelastic scattering and lepton-pair production experiments. The importance of 2-loop evolution is discussed. The main features and results of the global analysis are described. The range of small x behavior consistent with next-to-leading order QCD and current data is delineated. The extrapolated small x behavior is parameterized by effective Q-dependent power- and logarithmic-law parameters. Intriguing features of the evolution of these parameters with Q are presented. Alternative parametrizations based on the analytic ... continued below

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Pages: (9 p)

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Tung, Wu-Ki (Illinois Inst. of Tech., Chicago, IL (USA) Fermi National Accelerator Lab., Batavia, IL (USA)) September 1, 1990.

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Description

The small x behavior of parton distributions is studied phenomenologically by examining in detail a series of QCD-evolved distribution sets obtained in a new global analysis of deep inelastic scattering and lepton-pair production experiments. The importance of 2-loop evolution is discussed. The main features and results of the global analysis are described. The range of small x behavior consistent with next-to-leading order QCD and current data is delineated. The extrapolated small x behavior is parameterized by effective Q-dependent power- and logarithmic-law parameters. Intriguing features of the evolution of these parameters with Q are presented. Alternative parametrizations based on the analytic solution for small x is also explored. 20 refs., 6 figs., 1 tab.

Physical Description

Pages: (9 p)

Notes

OSTI; NTIS; INIS; GPO Dep.

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  • DESY topical meeting: small-x behavior of deep inelastic structure functions in QCD, Hamburg (Germany, F.R.), 14-16 May 1990

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  • Other: DE91006382
  • Report No.: FNAL/C-90/200-T
  • Report No.: CONF-9005264--4
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 6138570
  • Archival Resource Key: ark:/67531/metadc1111498

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  • September 1, 1990

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  • Feb. 22, 2018, 7:45 p.m.

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  • May 9, 2018, 6:33 p.m.

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Tung, Wu-Ki (Illinois Inst. of Tech., Chicago, IL (USA) Fermi National Accelerator Lab., Batavia, IL (USA)). QCD phenomenology of parton distribution functions at small x, article, September 1, 1990; Batavia, Illinois. (https://digital.library.unt.edu/ark:/67531/metadc1111498/: accessed March 24, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.