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<p>A proton wave function where quark-quark short-range correlations and three-quark forces are considered is used to calculate the proton form factor. The results show that the quark-quark short-range correlations and three-quark forces in proton are related to the proton core of radius <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\approx 0.5\;{\text{fm}}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mo>≈</mo> <mn>0.5</mn> <mspace width="0.277778em" /> <mtext>fm</mtext> </mrow> </math></EquationSource> </InlineEquation>, where the three valence quarks are confined. Since the charge distribution in the proton is related to the distribution of quarks, the results of proton form factor calculations are compared with the experimental data of proton electric form factor. The quark-quark short-range correlations lead to decrease the form factor. An agreement with the data is obtained due to the effect of three-quark forces.</p>

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Proton form factor: three-quark forces and short-range correlations effects

  • 期刊论文

  • 发表日期：

    2025年9月25日

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  • M. A. Hassan,
  • A. A. E. Hefny,
  • H. H. H. Ramadan,
  • T. N. E. Salama

摘要

A proton wave function where quark-quark short-range correlations and three-quark forces are considered is used to calculate the proton form factor. The results show that the quark-quark short-range correlations and three-quark forces in proton are related to the proton core of radius \(\approx 0.5\;{\text{fm}}\) ≈ 0.5 fm , where the three valence quarks are confined. Since the charge distribution in the proton is related to the distribution of quarks, the results of proton form factor calculations are compared with the experimental data of proton electric form factor. The quark-quark short-range correlations lead to decrease the form factor. An agreement with the data is obtained due to the effect of three-quark forces.