Zero temperature string breaking in lattice quantum chromodynamics

Claude Bernard, Thomas DeGrand, Carleton DeTar, Pierre Lacock, Steven Gottlieb, Urs M. Heller, James Hetrick, Kostas Orginos, William D Toussaint, Robert L. Sugar

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

The separation of a heavy quark and antiquark pair leads to the formation of a tube of flux, or "string," which should break in the presence of light quark-antiquark pairs. This expected zero-temperature phenomenon has proven elusive in simulations of lattice QCD. We study mixing between the string state and the two-meson decay channel in QCD with two flavors of dynamical sea quarks. We confirm that mixing is weak and find that it decreases at level crossing. While our study does not show direct effects of internal quark loops, our results, combined with unitarity, give a clear confirmation of string breaking.

Original languageEnglish (US)
Article number074509
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume64
Issue number7
DOIs
StatePublished - 2001

Fingerprint

Quarks
strings
quantum chromodynamics
Strings
quarks
Zero
Level Crossing
Direct Effect
Lattice QCD
temperature
Unitarity
Mesons
Tube
mesons
Decay
tubes
Internal
Decrease
decay
Simulation

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics
  • Mathematical Physics

Cite this

Bernard, C., DeGrand, T., DeTar, C., Lacock, P., Gottlieb, S., Heller, U. M., ... Sugar, R. L. (2001). Zero temperature string breaking in lattice quantum chromodynamics. Physical Review D - Particles, Fields, Gravitation and Cosmology, 64(7), [074509]. https://doi.org/10.1103/PhysRevD.64.074509

Zero temperature string breaking in lattice quantum chromodynamics. / Bernard, Claude; DeGrand, Thomas; DeTar, Carleton; Lacock, Pierre; Gottlieb, Steven; Heller, Urs M.; Hetrick, James; Orginos, Kostas; Toussaint, William D; Sugar, Robert L.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 64, No. 7, 074509, 2001.

Research output: Contribution to journalArticle

Bernard, C, DeGrand, T, DeTar, C, Lacock, P, Gottlieb, S, Heller, UM, Hetrick, J, Orginos, K, Toussaint, WD & Sugar, RL 2001, 'Zero temperature string breaking in lattice quantum chromodynamics', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 64, no. 7, 074509. https://doi.org/10.1103/PhysRevD.64.074509
Bernard, Claude ; DeGrand, Thomas ; DeTar, Carleton ; Lacock, Pierre ; Gottlieb, Steven ; Heller, Urs M. ; Hetrick, James ; Orginos, Kostas ; Toussaint, William D ; Sugar, Robert L. / Zero temperature string breaking in lattice quantum chromodynamics. In: Physical Review D - Particles, Fields, Gravitation and Cosmology. 2001 ; Vol. 64, No. 7.
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