Parton Evolution Model and the EMC Effect

  • The effect of the evolution of partons in nuclear environment to the structure function of nucleons bound in a nucleus is investigated.Together with the nuclear shadowing effect caused by the spatial overlap of partons from neighboring nucleons in the nucleus in the small x region,the ratio of the average nuclear structure function of nucleus 56Fe to the deuteron structure function is calculated and a good agreement between the calculated results and the experimental data is obtained.
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  • [1] J. J. Aubert et al., Phys. Lett., 123B(1983), 275.[2] C. H. Llewellyn Smith, Phys. Lett., 128B(1983), 107.[3] E. Ericson and A. W. Thomas, Phys. Lett, 128B(1983), 112.[4] S. V. Akulinichev et al., JETP Lett., 42(19851, 127; Phys. Lett., 158B(1985), 485; Phys. Rev. Lett., 55(1985), 2239; Phys. Rev., C33(1986), 1551.[5] R. L. Jaffe, Phys. Rev. Lett., 50(1983), 228.[6] C. E. Carlson and T. J. Havens, Phys. Rev. Lett, 51(1983), 261.[7] K. E. Lassila and U. P. Sukhatme, Phys. Lett., 209B(1988), 343.[8] F. E. Close, R. G. Roberts and G. G. Ross, Phys. Lett, 129B(1983), 346; F. E. Close, Nucl. Phys, A446 (1985), 273c.[9] C. A. Garcia Canal et al., Phys. Rev. Lett, 53(1984), 1430.[10] G. L. Li, K. F. Liu and G. E. Brown, Phys. Lett, 213B(1988), 531.[11] G. L. Li, Z. J. Cao and C. S. Zhong, Nucl. Phys. A 509(1990), 757.[12] G. E. Brown and M. Rho, Phys. Lett., 237B(1990), 3.[13] F. J. Yndurain, "Quantum Chromodynamics" (Springer-erlag, New York, 1983).[14] D., W. Duke and J. F. Owens, Phys, Rev., D30(1984), 49.[15] EMC and BCDMS Collab., CERN Courier 27(1987) No. 2, P. 10.
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YANG Jian-Jun, ZHU Ya-Bo, SHEN Hong-Qing, SHEN Jian-Ping and LI Guang-Lie. Parton Evolution Model and the EMC Effect[J]. Chinese Physics C, 1991, 15(4): 309-315.
YANG Jian-Jun, ZHU Ya-Bo, SHEN Hong-Qing, SHEN Jian-Ping and LI Guang-Lie. Parton Evolution Model and the EMC Effect[J]. Chinese Physics C, 1991, 15(4): 309-315. shu
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Received: 1900-01-01
Revised: 1900-01-01
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Parton Evolution Model and the EMC Effect

    Corresponding author: YANG Jian-Jun,
  • Department of Physics,Nanjing Normal University,2100242 Institute of High Energy Physics,Academia Sinica,Beijing,100039

Abstract: The effect of the evolution of partons in nuclear environment to the structure function of nucleons bound in a nucleus is investigated.Together with the nuclear shadowing effect caused by the spatial overlap of partons from neighboring nucleons in the nucleus in the small x region,the ratio of the average nuclear structure function of nucleus 56Fe to the deuteron structure function is calculated and a good agreement between the calculated results and the experimental data is obtained.

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