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The radial distributions of a heavy-light meson on a lattice

Koponen, J.; Green, A.M.; Michael, C. and Pennanen, P. (2003) The radial distributions of a heavy-light meson on a lattice. Nuclear Physics B - Proceedings Supplements, 119 . pp. 638-640. ISSN 0920-5632

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Official URL: http://www.elsevier.com/wps/find/journaldescriptio...

Abstract

In an earlier work, the charge (vector) and matter (scalar) radial distributions of heavy-light mesons were measured in the quenched approximation on a 16^3 times 24 lattice with a quark-gluon coupling of 5.7, a lattice spacing of 0.17 fm, and a hopping parameter corresponding to a light quark mass about that of the strange quark. Several improvements are now made: 1) The configurations are generated using dynamical fermions with a quark-gluon coupling of 5.2 (a lattice spacing of 0.14 fm); 2) Many more gauge configurations are included (78 compared with the earlier 20); 3) The distributions at many off-axis, in addition to on-axis, points are measured; 4) The data-analysis is much more complete. In particular, distributions involving excited states are extracted. The exponential decay of the charge and matter distributions can be described by mesons of mass 0.9+-0.1 and 1.5+-0.1 GeV respectively - values that are consistent with those of vector and scalar qqbar-states calculated directly with the same lattice parameters.

Item Type:Article
Additional Information:LTH 555. arXiv Number: arXiv:hep-lat/0209100v1. Available online 13 October 2003. Issue: May 2003.
Uncontrolled Keywords:ART
Subjects:Q Science > QC Physics
Departments, Research Centres and Related Units:Academic Faculties, Institutes and Research Centres > Faculty of Science > Department of Mathematical Sciences
DOI:10.1016/S0920-5632(03)01610-4
Related URLs:
Refereed:No
Status:Published
ID Code:538
Deposited On:20 Nov 2008 12:02
Last Modified:20 May 2011 12:29

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