• Open Access

Chiral anomaly and the pion properties in the light-front quark model

Ho-Meoyng Choi and Chueng-Ryong Ji
Phys. Rev. D 102, 036005 – Published 6 August 2020

Abstract

We explore the link between the chiral symmetry of QCD and the numerical results of the light-front quark model, analyzing both the two-point and three-point functions of the pion. Including the axial-vector coupling as well as the pseudoscalar coupling in the light-front quark model, we discuss the implication of the chiral anomaly in describing the pion decay constant, the pion-photon transition form factor and the electromagnetic form factor of the pion. In constraining the model parameters, we find that the chiral anomaly plays a critical role and the analysis of Fπγ(Q2) in timelike region is important. Our results indicate that the constituent quark picture is effective for the low and high Q2 ranges implementing the quark mass evolution effect as Q2 grows.

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  • Received 16 June 2020
  • Accepted 20 July 2020

DOI:https://doi.org/10.1103/PhysRevD.102.036005

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Nuclear PhysicsParticles & Fields

Authors & Affiliations

Ho-Meoyng Choi

  • Department of Physics, Teachers College, Kyungpook National University, Daegu 41566, Korea

Chueng-Ryong Ji

  • Department of Physics, North Carolina State University, Raleigh, North Carolina 27695-8202, USA

Article Text

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Issue

Vol. 102, Iss. 3 — 1 August 2020

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