Year: 2018
Type: article
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 $\ensuremath{-}t\ensuremath{\lesssim}0.6\phantom{\rule{0.16em}{0ex}}{\mathrm{GeV}}^{2}$, whereas $\ensuremath{-}t\ensuremath{\lesssim}0.9\phantom{\rule{0.16em}{0ex}}{\mathrm{GeV}}^{2}$ will suffice for the kaon. These results should prove useful in planning and evaluating the potential of numerous experiments at existing and proposed facilities.
Source: Physical Review C
Authors: Si-Xue Qin, Chen Chen, Cédric Mezrag, Craig D. Roberts
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2590417054