Contribution of the πNN Processes to Gottfried Sum Rule Violation

  • It is pointed out that contribution of the πNN processes to the structure functions of the nucleon should be calculated by taking the recoil nucleon as a physical nucleon. The obtained result for the contribution to Gottfried sum rule violation is smaller than the corresponding result obtained earlier in literature, where Gottfried sum rule was assumed to be valid for the recoil nucleon. It leaves more space to other mechanisms leading to such violation. Some other consequences are also discussed in this paper.
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WU Qi and LIU Chun-Xiu. Contribution of the πNN Processes to Gottfried Sum Rule Violation[J]. Chinese Physics C, 2003, 27(2): 138-141.
WU Qi and LIU Chun-Xiu. Contribution of the πNN Processes to Gottfried Sum Rule Violation[J]. Chinese Physics C, 2003, 27(2): 138-141. shu
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Received: 2002-03-28
Revised: 1900-01-01
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Contribution of the πNN Processes to Gottfried Sum Rule Violation

    Corresponding author: WU Qi,
  • Science College of Ji′nan University, Ji′nan 250002, China2 Institute of High Energy Physics, CAS, Beijing 100039, China

Abstract: It is pointed out that contribution of the πNN processes to the structure functions of the nucleon should be calculated by taking the recoil nucleon as a physical nucleon. The obtained result for the contribution to Gottfried sum rule violation is smaller than the corresponding result obtained earlier in literature, where Gottfried sum rule was assumed to be valid for the recoil nucleon. It leaves more space to other mechanisms leading to such violation. Some other consequences are also discussed in this paper.

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