Mixing of Meson, Hybrid, and Glueball States
Abstract
The effective QCD Hamiltonian is constructed with the help of the background perturbation theory, and relativistic FeynmanSchwinger path integrals for Green's functions. The resulting spectrum displays mass gaps of the order of one GeV, when additional valence gluon is added to the bound state. Mixing between meson, hybrid, and glueball states is defined in two ways: through generalized Green's functions and via modified Feynman diagram technic giving similar answers. Results for mixing matrix elements are numerically not large (around 0.1 GeV) and agree with earlier analytic estimates and lattice simulations.
 Publication:

Physics of Atomic Nuclei
 Pub Date:
 October 2001
 DOI:
 10.1134/1.1414936
 arXiv:
 arXiv:hepph/0110033
 Bibcode:
 2001PAN....64.1876S
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 LaTeX2e, 23 pages, 4 Postscript figures