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)
TL;DR
This paper presents a lattice QCD study demonstrating string breaking in quark-antiquark systems, revealing the transition to meson-antimeson states and analyzing short-distance interactions, with implications for quarkonium physics.
Contribution
First numerical observation of string breaking in lattice QCD with improved noise reduction techniques at zero temperature.
Findings
Resolved string breaking signature in n_f=2 lattice QCD
Analyzed short-distance static-light meson interactions
Connected results to quarkonium properties
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.
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