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

Akira Watanabe, Chung Wen Kao, and Katsuhiko Suzuki
Phys. Rev. D 94, 114008 – Published 9 December 2016

Abstract

We investigate the valence quark distribution function of the pion vπ(x,Q2) in the framework of the chiral constituent quark model and evaluate the meson cloud effects on vπ(x,Q2). We explicitly demonstrate how the meson cloud effects affect vπ(x,Q2) 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.

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  • Received 27 October 2016

DOI:https://doi.org/10.1103/PhysRevD.94.114008

© 2016 American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
Particles & Fields

Authors & Affiliations

Akira Watanabe1,*, Chung Wen Kao1,†, and Katsuhiko Suzuki2,‡

  • 1Department of Physics and Center for High Energy Physics, Chung-Yuan Christian University, Chung-Li 32023, Taiwan
  • 2Department of Physics, Tokyo University of Science, Shinjuku, Tokyo 162-8601, Japan

  • *Corresponding author. cwkao@cycu.edu.tw
  • watanabe@cycu.edu.tw
  • katsu_s@rs.kagu.tus.ac.jp

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Issue

Vol. 94, Iss. 11 — 1 December 2016

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