arXiv:hep-lat/0505012·v2·High Energy Physics — Lattice
Observation of String Breaking in QCD
SESAM Collaboration: Gunnar S. Bali (1) · Hartmut Neff (2) · Thomas Duessel (3) · Thomas Lippert (3) · Klaus Schilling (4) ((1) Glasgow Univ · (2) Boston Univ · (3) FZ Juelich · (4) Wuppertal Univ)
Abstract
We numerically investigate the transition of the static quark-antiquark string into a static-light meson-antimeson system. Improving noise reduction techniques, we are able to resolve the signature of string breaking dynamics for n_f=2 lattice QCD at zero temperature. This result can be related to properties of quarkonium systems. We also study short-distance interactions between two static-light mesons.
Comments: 27 pages, 22 figures, changed decimal place of errors in 3 entries of Table, corrected references