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High Energy Physics - Phenomenology

arXiv:1610.08817 (hep-ph)
[Submitted on 27 Oct 2016 (v1), last revised 25 Nov 2016 (this version, v3)]

Title:Meson cloud effects on the pion quark distribution function in the chiral constituent quark model

Authors:Akira Watanabe, Chung Wen Kao, Katsuhiko Suzuki
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Abstract:We investigate the valence quark distribution function of the pion $v^{\pi}(x,Q^2)$ in the framework of the chiral constituent quark model and evaluate the meson cloud effects on $v^{\pi}(x,Q^2)$. We explicitly demonstrate how the meson cloud effects affect $v^{\pi}(x,Q^2)$ in detail. We find that the meson cloud correction causes an overall 32\% reduction of the valence quark distribution and an enhancement at the small Bjorken $x$ regime. Besides, we also find that the dressing effect of the meson cloud will make the valence quark distribution to be softer in the large $x$ region.
Comments: 8 pages, 4 figures, version accepted by Phys. Rev. D
Subjects: High Energy Physics - Phenomenology (hep-ph); Nuclear Theory (nucl-th)
Report number: CYCU-HEP-16-10
Cite as: arXiv:1610.08817 [hep-ph]
  (or arXiv:1610.08817v3 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.1610.08817
Journal reference: Phys. Rev. D 94, 114008 (2016)
Related DOI: https://doi.org/10.1103/PhysRevD.94.114008

Submission history

From: Chung Wen Kao [view email]
[v1] Thu, 27 Oct 2016 14:50:49 UTC (407 KB)
[v2] Wed, 23 Nov 2016 12:33:52 UTC (407 KB)
[v3] Fri, 25 Nov 2016 03:19:12 UTC (407 KB)
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