Limit on the d/u asymmetry of the nucleon sea from Drell-Yan production

P. L. McGaughey; J. M. Moss; D. M. Alde; H. W. Baer; T. A. Carey; G. T. Garvey; A. Klein; C. Lee; M. J. Leitch; J. W. Lillberg; C. S. Mishra; J. C. Peng; C. N. Brown; W. E. Cooper; Y. B. Hsiung; M. R. Adams; R. Guo; D. M. Kaplan; R. L. McCarthy; G. Danner; M. J. Wang; M. L. Barlett; G. W. Hoffmann

doi:10.1103/PhysRevLett.69.1726

Limit on the d/u asymmetry of the nucleon sea from Drell-Yan production

P. L. McGaughey, J. M. Moss, D. M. Alde, H. W. Baer, T. A. Carey, G. T. Garvey, A. Klein, C. Lee, M. J. Leitch, J. W. Lillberg, C. S. Mishra, J. C. Peng, C. N. Brown, W. E. Cooper, Y. B. Hsiung, M. R. Adams, R. Guo, D. M. Kaplan, R. L. McCarthy, G. DannerM. J. Wang, M. L. Barlett, G. W. Hoffmann

Research output: Contribution to journal › Article › peer-review

Abstract

We present an analysis of 800-GeV proton-induced Drell-Yan production data from isoscalar targets H2 and C, and from W, which has a large neutron excess. The ratio of cross sections per nucleon, R-W/IS, is sensitive to the difference between the d(x) and u(x) structure functions of the proton. We find that R is close to unity in the range 0.04x0.27, allowing upper limits to be set on the d-u asymmetry. Additionally, the shape of the differential cross section m3 d2/dxF dm for H2 at xF0 shows no evidence of an asymmetric sea in the proton. We examine the implications of these data for various models of the violation of the Gottfried sum rule in deep-inelastic lepton scattering.

Original language	English (US)
Pages (from-to)	1726-1728
Number of pages	3
Journal	Physical review letters
Volume	69
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevLett.69.1726
State	Published - 1992
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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McGaughey, P. L., Moss, J. M., Alde, D. M., Baer, H. W., Carey, T. A., Garvey, G. T., Klein, A., Lee, C., Leitch, M. J., Lillberg, J. W., Mishra, C. S., Peng, J. C., Brown, C. N., Cooper, W. E., Hsiung, Y. B., Adams, M. R., Guo, R., Kaplan, D. M., McCarthy, R. L., ... Hoffmann, G. W. (1992). Limit on the d/u asymmetry of the nucleon sea from Drell-Yan production. Physical review letters, 69(12), 1726-1728. https://doi.org/10.1103/PhysRevLett.69.1726

Limit on the d/u asymmetry of the nucleon sea from Drell-Yan production. / McGaughey, P. L.; Moss, J. M.; Alde, D. M.; Baer, H. W.; Carey, T. A.; Garvey, G. T.; Klein, A.; Lee, C.; Leitch, M. J.; Lillberg, J. W.; Mishra, C. S.; Peng, J. C.; Brown, C. N.; Cooper, W. E.; Hsiung, Y. B.; Adams, M. R.; Guo, R.; Kaplan, D. M.; McCarthy, R. L.; Danner, G.; Wang, M. J.; Barlett, M. L.; Hoffmann, G. W.

In: Physical review letters, Vol. 69, No. 12, 1992, p. 1726-1728.

Research output: Contribution to journal › Article › peer-review

McGaughey, PL, Moss, JM, Alde, DM, Baer, HW, Carey, TA, Garvey, GT, Klein, A, Lee, C, Leitch, MJ, Lillberg, JW, Mishra, CS, Peng, JC, Brown, CN, Cooper, WE, Hsiung, YB, Adams, MR, Guo, R, Kaplan, DM, McCarthy, RL, Danner, G, Wang, MJ, Barlett, ML & Hoffmann, GW 1992, 'Limit on the d/u asymmetry of the nucleon sea from Drell-Yan production', Physical review letters, vol. 69, no. 12, pp. 1726-1728. https://doi.org/10.1103/PhysRevLett.69.1726

McGaughey, P. L. ; Moss, J. M. ; Alde, D. M. ; Baer, H. W. ; Carey, T. A. ; Garvey, G. T. ; Klein, A. ; Lee, C. ; Leitch, M. J. ; Lillberg, J. W. ; Mishra, C. S. ; Peng, J. C. ; Brown, C. N. ; Cooper, W. E. ; Hsiung, Y. B. ; Adams, M. R. ; Guo, R. ; Kaplan, D. M. ; McCarthy, R. L. ; Danner, G. ; Wang, M. J. ; Barlett, M. L. ; Hoffmann, G. W. / Limit on the d/u asymmetry of the nucleon sea from Drell-Yan production. In: Physical review letters. 1992 ; Vol. 69, No. 12. pp. 1726-1728.

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abstract = "We present an analysis of 800-GeV proton-induced Drell-Yan production data from isoscalar targets H2 and C, and from W, which has a large neutron excess. The ratio of cross sections per nucleon, R-W/IS, is sensitive to the difference between the d(x) and u(x) structure functions of the proton. We find that R is close to unity in the range 0.04x0.27, allowing upper limits to be set on the d-u asymmetry. Additionally, the shape of the differential cross section m3 d2/dxF dm for H2 at xF0 shows no evidence of an asymmetric sea in the proton. We examine the implications of these data for various models of the violation of the Gottfried sum rule in deep-inelastic lepton scattering.",

author = "McGaughey, {P. L.} and Moss, {J. M.} and Alde, {D. M.} and Baer, {H. W.} and Carey, {T. A.} and Garvey, {G. T.} and A. Klein and C. Lee and Leitch, {M. J.} and Lillberg, {J. W.} and Mishra, {C. S.} and Peng, {J. C.} and Brown, {C. N.} and Cooper, {W. E.} and Hsiung, {Y. B.} and Adams, {M. R.} and R. Guo and Kaplan, {D. M.} and McCarthy, {R. L.} and G. Danner and Wang, {M. J.} and Barlett, {M. L.} and Hoffmann, {G. W.}",

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doi = "10.1103/PhysRevLett.69.1726",

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T1 - Limit on the d/u asymmetry of the nucleon sea from Drell-Yan production

AU - McGaughey, P. L.

AU - Moss, J. M.

AU - Alde, D. M.

AU - Baer, H. W.

AU - Carey, T. A.

AU - Garvey, G. T.

AU - Klein, A.

AU - Lee, C.

AU - Leitch, M. J.

AU - Lillberg, J. W.

AU - Mishra, C. S.

AU - Peng, J. C.

AU - Brown, C. N.

AU - Cooper, W. E.

AU - Hsiung, Y. B.

AU - Adams, M. R.

AU - Guo, R.

AU - Kaplan, D. M.

AU - McCarthy, R. L.

AU - Danner, G.

AU - Wang, M. J.

AU - Barlett, M. L.

AU - Hoffmann, G. W.

PY - 1992

Y1 - 1992

N2 - We present an analysis of 800-GeV proton-induced Drell-Yan production data from isoscalar targets H2 and C, and from W, which has a large neutron excess. The ratio of cross sections per nucleon, R-W/IS, is sensitive to the difference between the d(x) and u(x) structure functions of the proton. We find that R is close to unity in the range 0.04x0.27, allowing upper limits to be set on the d-u asymmetry. Additionally, the shape of the differential cross section m3 d2/dxF dm for H2 at xF0 shows no evidence of an asymmetric sea in the proton. We examine the implications of these data for various models of the violation of the Gottfried sum rule in deep-inelastic lepton scattering.

AB - We present an analysis of 800-GeV proton-induced Drell-Yan production data from isoscalar targets H2 and C, and from W, which has a large neutron excess. The ratio of cross sections per nucleon, R-W/IS, is sensitive to the difference between the d(x) and u(x) structure functions of the proton. We find that R is close to unity in the range 0.04x0.27, allowing upper limits to be set on the d-u asymmetry. Additionally, the shape of the differential cross section m3 d2/dxF dm for H2 at xF0 shows no evidence of an asymmetric sea in the proton. We examine the implications of these data for various models of the violation of the Gottfried sum rule in deep-inelastic lepton scattering.

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