NONPERTURBATIVE EFFECTS IN THE NONRELATIVISTIC HADRON SCATTERING

Authors
SHEVCHENKO VI
Citation
Vi. Shevchenko, NONPERTURBATIVE EFFECTS IN THE NONRELATIVISTIC HADRON SCATTERING, Physics letters. Section B, 392(3-4), 1997, pp. 457-462
Citations number
15
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
392
Issue
3-4
Year of publication
1997
Pages
457 - 462
Database
ISI
SICI code
0370-2693(1997)392:3-4<457:NEITNH>2.0.ZU;2-N
Abstract
Starting from the gauge-invariant quark-antiquark Green function the e xpression for the nonrelativistic meson scattering amplitude on the ex ternal gluon field is obtained. The nonperturbative form of this ampli tude is discussed. It is shown, that nonlocality of the nonperturbativ e vacuum field distribution plays an essential role. As a concrete exa mple, the charmonium-nucleon scattering length is found and the possib ility of the exotic charmonium-nucleus bound states is analyzed.