Off-shell persistence of composite pions and kaons

Si-Xue Qin, Chen Chen, Cédric Mezrag, and Craig D. Roberts
Phys. Rev. C 97, 015203 – Published 17 January 2018

Abstract

In order for a Sullivan-like process to provide reliable access to a meson target as t becomes spacelike, the pole associated with that meson should remain the dominant feature of the quark-antiquark scattering matrix and the wave function describing the related correlation must evolve slowly and smoothly. Using continuum methods for the strong-interaction bound-state problem, we explore and delineate the circumstances under which these conditions are satisfied: for the pion, this requires t0.6GeV2, whereas t0.9GeV2 will suffice for the kaon. These results should prove useful in planning and evaluating the potential of numerous experiments at existing and proposed facilities.

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  • Received 20 February 2017
  • Revised 20 November 2017

DOI:https://doi.org/10.1103/PhysRevC.97.015203

©2018 American Physical Society

Physics Subject Headings (PhySH)

Nuclear PhysicsParticles & Fields

Authors & Affiliations

Si-Xue Qin1,*, Chen Chen2,†, Cédric Mezrag3,‡, and Craig D. Roberts3,§

  • 1Department of Physics, Chongqing University, Chongqing 401331, People's Republic of China
  • 2Instituto de Física Teórica, Universidade Estadual Paulista, 01140-070 São Paulo, Brazil
  • 3Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA

  • *sqin@cqu.edu.cn
  • chenchen@ift.unesp.br
  • cedric.mezrag@roma1.infn.it
  • §cdroberts@anl.gov

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Issue

Vol. 97, Iss. 1 — January 2018

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