Skip to main content
SpringerLink
Log in

Light flavor asymmetry of nucleon sea

  • Regular Article - Theoretical Physics
  • Published:
The European Physical Journal C Aims and scope Submit manuscript

Abstract

The light flavor antiquark distributions of the nucleon sea are calculated in the effective chiral quark model and compared with experimental results. The contributions of the flavor-symmetric sea-quark distributions and the nuclear EMC effect are taken into account to obtain the ratio of Drell–Yan cross sections σ pD/2σ pp, which can match well with the results measured in the FermiLab E866/NuSea experiment. The calculated results also match the \(\bar{d}(x)-\bar{u}(x)\) measured in different experiments, but unmatch the behavior of \(\bar{d}(x)/\bar{u}(x)\) derived indirectly from the measurable quantity σ pD/2σ pp by the FermiLab E866/NuSea Collaboration at large x. We suggest to measure again \(\bar{d}(x)/\bar{u}(x)\) at large x from precision experiments with careful treatment of the experimental data. We also propose an alternative procedure for experimental data treatment.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. K. Gottfried, Phys. Rev. Lett. 18, 1174 (1967)

    Article  ADS  Google Scholar 

  2. P. Amaudruz et al. (New Muon Collaboration), Phys. Rev. Lett. 66, 2712 (1991)

    Article  ADS  Google Scholar 

  3. M. Arneodo et al. (New Muon Collaboration), Phys. Rev. D 50, R1 (1994)

    Article  ADS  Google Scholar 

  4. A. Baldit et al. (NA51 Collaboration), Phys. Lett. B 332, 244 (1994)

    Article  ADS  Google Scholar 

  5. E.A. Hawker et al. (Fermilab E866/NuSea Collaboration), Phys. Rev. Lett. 80, 3715 (1998)

    Article  ADS  Google Scholar 

  6. J.-C. Peng et al. (FNAL E866/NuSea Collaboration), Phys. Rev. D 58, 092004 (1998)

    Article  ADS  Google Scholar 

  7. R.S. Towell et al. (FNAL E866/NuSea Collaboration), Phys. Rev. D 64, 052002 (2001)

    Article  ADS  Google Scholar 

  8. K. Ackerstaff et al. (HERMES Collaboration), Phys. Rev. Lett. 81, 5519 (1998)

    Article  ADS  Google Scholar 

  9. S. Kumano, Phys. Rep. 303, 183 (1998)

    Article  ADS  Google Scholar 

  10. G.T. Garvey, J.C. Peng, Prog. Part. Nucl. Phys. 47, 203 (2001)

    Article  ADS  Google Scholar 

  11. B.-Q. Ma, Phys. Lett. B 274, 111 (1992)

    Article  ADS  Google Scholar 

  12. B.-Q. Ma, A. Schäfer, W. Greiner, Phys. Rev. D 47, 51 (1993)

    Article  ADS  Google Scholar 

  13. H. Song, X. Zhang, B.-Q. Ma, Phys. Rev. D 82, 113011 (2010)

    Article  ADS  Google Scholar 

  14. G. Preparata, P.G. Ratcliffe, J. Soffer, Phys. Rev. Lett. 66, 687 (1991)

    Article  ADS  Google Scholar 

  15. S.D. Drell, T.M. Yan, Ann. Phys. 66, 578 (1971)

    Article  ADS  Google Scholar 

  16. P.L. McGaughey et al., Phys. Rev. Lett. 69, 1726 (1992)

    Article  ADS  Google Scholar 

  17. R.D. Field, R.P. Feynman, Phys. Rev. D 15, 2590 (1977)

    Article  ADS  Google Scholar 

  18. D.A. Ross, C.T. Sachrajda, Nucl. Phys. B 149, 497 (1979)

    Article  ADS  Google Scholar 

  19. F.M. Steffens, A.W. Thomas, Phys. Rev. C 55, 900 (1997)

    Article  ADS  Google Scholar 

  20. J.D. Sullivan, Phys. Rev. D 5, 1732 (1972)

    Article  ADS  Google Scholar 

  21. A.W. Thomas, Phys. Lett. B 126, 97 (1983)

    Article  ADS  Google Scholar 

  22. S. Kumano, Phys. Rev. D 43, 59 (1991)

    Article  ADS  Google Scholar 

  23. S. Kumano, Phys. Rev. D 43, 3067 (1991)

    Article  ADS  Google Scholar 

  24. S. Kumano, J.T. Londergan, Phys. Rev. D 44, 717 (1991)

    Article  ADS  Google Scholar 

  25. E.M. Henley, G.A. Miller, Phys. Lett. B 251, 453 (1990)

    Article  ADS  Google Scholar 

  26. A. Signal, A.W. Thomas, Mod. Phys. Lett. A 6, 271 (1991)

    Article  ADS  Google Scholar 

  27. J. Stern, G. Clément, Phys. Lett. B 264, 426 (1991)

    Article  ADS  Google Scholar 

  28. W.-Y.P. Hwang, J. Speth, G.E. Brown, Z. Phys. A 339, 383 (1991)

    Article  ADS  Google Scholar 

  29. W.-Y.P. Hwang, J. Speth, Phys. Rev. D 46, 1198 (1992)

    Article  ADS  Google Scholar 

  30. S.J. Brodsky, B.-Q. Ma, Phys. Lett. B 381, 317 (1996)

    Article  ADS  Google Scholar 

  31. S. Weinberg, Physica A 96, 327 (1979)

    Article  ADS  Google Scholar 

  32. A. Manohar, H. Georgi, Nucl. Phys. B 234, 189 (1984)

    Article  ADS  Google Scholar 

  33. E.J. Eichten, I. Hinchliffe, C. Quigg, Phys. Rev. D 45, 2269 (1992)

    Article  ADS  Google Scholar 

  34. M. Wakamatsu, Phys. Lett. B 269, 394 (1991)

    Article  ADS  Google Scholar 

  35. P.V. Pobylitsa, M.V. Polyakov, K. Goeke, T. Watabe, C. Weiss, Phys. Rev. D 59, 034024 (1999)

    Article  ADS  Google Scholar 

  36. A.E. Dorokhov, N.I. Kochelev, Phys. Lett. B 259, 335 (1991)

    Article  ADS  Google Scholar 

  37. A.E. Dorokhov, N.I. Kochelev, Phys. Lett. B 304, 167 (1993)

    Article  ADS  Google Scholar 

  38. Y.-H. Zhang, L. Shao, B.-Q. Ma, Phys. Lett. B 671, 30 (2009)

    Article  ADS  Google Scholar 

  39. L. Shao, Y.-J. Zhang, B.-Q. Ma, Phys. Lett. B 686, 136 (2010), and references therein

    Article  ADS  Google Scholar 

  40. C. Bourrely, J. Soffer, F. Buccella, Eur. Phys. J. C 41, 327 (2005)

    Article  ADS  Google Scholar 

  41. R.C. Hwa, M.S. Zahir, Phys. Rev. D 23, 2539 (1981)

    Article  ADS  Google Scholar 

  42. B.-Q. Ma, Phys. Lett. B 375, 320 (1996)

    Article  ADS  Google Scholar 

  43. B.-Q. Ma, A. Schafer, Phys. Lett. B 378, 307 (1996)

    Article  ADS  Google Scholar 

  44. J. Ashman et al., Phys. Lett. B 206, 364 (1988)

    Article  ADS  Google Scholar 

  45. J. Ashman et al., Nucl. Phys. B 328, 1 (1989)

    Article  ADS  Google Scholar 

  46. T.P. Cheng, L.-F. Li, Phys. Rev. Lett. 74, 2872 (1995)

    Article  ADS  Google Scholar 

  47. X. Song, J.S. McCarthy, H.J. Weber, Phys. Rev. D 55, 2624 (1997)

    Article  ADS  Google Scholar 

  48. Y. Ding, R.-G. Xu, B.-Q. Ma, Phys. Lett. B 607, 101 (2005)

    Article  ADS  Google Scholar 

  49. Y. Ding, R.-G. Xu, B.-Q. Ma, Phys. Rev. D 71, 094014 (2005)

    Article  ADS  Google Scholar 

  50. K. Suzuki, W. Weise, Nucl. Phys. A 634, 141 (1998)

    Article  ADS  Google Scholar 

  51. S. Weinberg, Phys. Rev. Lett. 65, 1181 (1990)

    Article  ADS  MathSciNet  Google Scholar 

  52. A. Airapetian, et al. (HERMES Collaboration) Phys. Rev. Lett. 92, 012005 (2004)

    Article  ADS  Google Scholar 

  53. A. Airapetian et al. (HERMES Collaboration), Phys. Rev. D 71, 012003 (2005)

    Article  ADS  Google Scholar 

  54. A. Szczurek, A.J. Buchmann, A. Faessler, J. Phys. G 22, 1741 (1996)

    Article  ADS  Google Scholar 

  55. M. Glück, E. Reya, M. Stratmann, Eur. Phys. J. C 2, 159 (1998)

    Article  ADS  Google Scholar 

  56. H.W. Kua, L.C. Kwek, C.H. Oh, Phys. Rev. D 59, 074025 (1999)

    Article  ADS  Google Scholar 

  57. R.C. Hwa, C.B. Yang, Phys. Rev. C 66, 025204 (2002)

    Article  ADS  Google Scholar 

  58. R.C. Hwa, C.B. Yang, Phys. Rev. C 66, 025205 (2002)

    Article  ADS  Google Scholar 

  59. S.J. Brodsky, T. Huang, G.P. Lepage, in Particles and Fields, ed. by A.Z. Capri, A.N. Kamal (Plenum, New York, 1983), p. 143

    Chapter  Google Scholar 

  60. H.L. Lai et al., Phys. Rev. D 55, 1280 (1997)

    Article  ADS  Google Scholar 

  61. J.J. Aubert et al., Phys. Lett. B 105, 322 (1981)

    Article  ADS  Google Scholar 

  62. J.J. Aubert et al. (CERN NA2/EMC), Phys. Lett. B 123, 275 (1983)

    Article  ADS  Google Scholar 

  63. Arnold R.G. et al. (E139), Phys. Rev. Lett. 52, 727 (1984)

    Article  ADS  Google Scholar 

  64. C.H. Llewellyn Smith, Phys. Lett. B 128, 107 (1983)

    Article  Google Scholar 

  65. M. Ericson, A.W. Thomas, Phys. Lett. B 128, 112 (1983)

    Article  ADS  Google Scholar 

  66. R.L. Jaffe, Phys. Rev. Lett. 50, 228 (1983)

    Article  ADS  Google Scholar 

  67. C.E. Carlson, T.J. Havens, Phys. Rev. Lett. 51, 261 (1983)

    Article  ADS  Google Scholar 

  68. H.J. Pirner, J.P. Vary, Phys. Rev. Lett. 46, 1376 (1981)

    Article  ADS  Google Scholar 

  69. F.E. Close, R.G. Roberts, G.G. Ross, Phys. Lett. B 129, 346 (1983)

    Article  ADS  Google Scholar 

  70. R.L. Jaffe, F.E. Close, R.G. Roberts, G.G. Ross, Phys. Lett. B 134, 449 (1984)

    Article  ADS  Google Scholar 

  71. F.E. Close, R.L. Jaffe, R.G. Roberts, G.G. Ross, Phys. Rev. D 31, 1004 (1985)

    Article  ADS  Google Scholar 

  72. O. Nachtmann, H.J. Pirner, Z. Phys. C 21, 277 (1984)

    Article  ADS  Google Scholar 

  73. B. Lu, B.-Q. Ma, Phys. Rev. C 74, 055202 (2006)

    Article  ADS  Google Scholar 

  74. Y. Zhang, L. Shao, B.-Q. Ma, Nucl. Phys. A 828, 390 (2009), and references therein

    Article  ADS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing, 100871, China

    Huiying Song, Xinyu Zhang & Bo-Qiang Ma

  2. Center for High Energy Physics, Peking University, Beijing, 100871, China

    Bo-Qiang Ma

Authors
  1. Huiying Song
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Xinyu Zhang
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Bo-Qiang Ma
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Bo-Qiang Ma.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Song, H., Zhang, X. & Ma, BQ. Light flavor asymmetry of nucleon sea. Eur. Phys. J. C 71, 1542 (2011). https://doi.org/10.1140/epjc/s10052-011-1542-4

Download citation

  • Received:

  • Revised:

  • Published:

  • DOI: https://doi.org/10.1140/epjc/s10052-011-1542-4

Keywords

Search

Navigation