Measurement of the LIght Quark Flavor Asymmetry in the Nucleon Sea

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The Drell-Yan cross section ratios, s(p+d)/s(p+p), measured in Fermilab E866, have led to the first determination of d(x)/u(x), d(x)-(x), and the integral of d(x)-u(x) for the proton over the range 0.02 < x < 0.345. The E866 results are compared with predictions based on parton distribution functions and various theoretical models. The relationship between the E866 results and the NMC measurements of the Gottfried integral is discussed. The agreement between the E866 results and models employing virtual mesons indicates these non-perturbative processes play an important role in the origin of the d, u asymmetry in the nucleon sea.

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5 p.

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Peng, J.C.; Awes, T.C.; Beddo, M.E.; Brooks, M.L.; Brown, C.N.; Bush, J.D. et al. July 23, 1998.

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The Drell-Yan cross section ratios, s(p+d)/s(p+p), measured in Fermilab E866, have led to the first determination of d(x)/u(x), d(x)-(x), and the integral of d(x)-u(x) for the proton over the range 0.02 < x < 0.345. The E866 results are compared with predictions based on parton distribution functions and various theoretical models. The relationship between the E866 results and the NMC measurements of the Gottfried integral is discussed. The agreement between the E866 results and models employing virtual mesons indicates these non-perturbative processes play an important role in the origin of the d, u asymmetry in the nucleon sea.

Physical Description

5 p.

Notes

INIS; OSTI as DE00762866

Medium: P; Size: 5 pages

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  • XXIX International Conference on High Energy Physics, Vancouver, British Columbia (CA), 07/23/1998--07/28/1998

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  • Report No.: LA-UR-98-4410
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 762866
  • Archival Resource Key: ark:/67531/metadc723320

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  • July 23, 1998

Added to The UNT Digital Library

  • Sept. 29, 2015, 5:31 a.m.

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  • April 11, 2017, 12:42 p.m.

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Peng, J.C.; Awes, T.C.; Beddo, M.E.; Brooks, M.L.; Brown, C.N.; Bush, J.D. et al. Measurement of the LIght Quark Flavor Asymmetry in the Nucleon Sea, article, July 23, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc723320/: accessed August 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.