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Title: Off-Shell Persistence of Composite Pions and Kaons

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 quarkantiquark 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 -t ≲ 0.6 GeV2, whereas -t ≲ 0.9 GeV2 will suffice for the kaon. Furthermore, these results should prove useful in evaluating the potential of numerous experiments at existing and proposed facilities.

Authors:
 [1];  [2];  [3];  [3]
  1. Chongqing Univ., Chongqing (People's Republic of China)
  2. Univ. Estadual Paulista, Sao Paulo (Brazil)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1417842
Alternate Identifier(s):
OSTI ID: 1417223
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 97; Journal Issue: 1; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Qin, Si -Xue, Chen, Chen, Mezrag, Cedric, and Roberts, Craig D. Off-Shell Persistence of Composite Pions and Kaons. United States: N. p., 2018. Web. doi:10.1103/PhysRevC.97.015203.
Qin, Si -Xue, Chen, Chen, Mezrag, Cedric, & Roberts, Craig D. Off-Shell Persistence of Composite Pions and Kaons. United States. doi:10.1103/PhysRevC.97.015203.
Qin, Si -Xue, Chen, Chen, Mezrag, Cedric, and Roberts, Craig D. Wed . "Off-Shell Persistence of Composite Pions and Kaons". United States. doi:10.1103/PhysRevC.97.015203. https://www.osti.gov/servlets/purl/1417842.
@article{osti_1417842,
title = {Off-Shell Persistence of Composite Pions and Kaons},
author = {Qin, Si -Xue and Chen, Chen and Mezrag, Cedric and Roberts, Craig D.},
abstractNote = {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 quarkantiquark 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 -t ≲ 0.6 GeV2, whereas -t ≲ 0.9 GeV2 will suffice for the kaon. Furthermore, these results should prove useful in evaluating the potential of numerous experiments at existing and proposed facilities.},
doi = {10.1103/PhysRevC.97.015203},
journal = {Physical Review C},
number = 1,
volume = 97,
place = {United States},
year = {2018},
month = {1}
}

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Figures / Tables:

Figure 1 Figure 1: Sullivan processes, in which a nucleon’s pion cloud is used to provide access to the pion’s (a) elastic form factor and (b) parton distribution functions. t = −(k − k′)2 is a Mandelstam variable and the intermediate pion, π(P = k − k′), P2 = −t , ismore » off-shell.« less

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.