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

Koponen, J, Green, AM, Michael, C and Pennanen, P (2002) The radial distributions of a heavy-light meson on a lattice. Nucl.Phys.Proc.Suppl., 119. pp. 638-640.

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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:	3 pages, 4 figures, Lattice2002(heavyquark)
Uncontrolled Keywords:	hep-lat, hep-lat
Subjects:	?? QC ??
Divisions:	Faculty of Science and Engineering > School of Physical Sciences > Mathematical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	20 Nov 2008 12:02
Last Modified:	17 Dec 2022 00:11
DOI:	10.1016/s0920-5632(03)01610-4
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/538