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.
PDF
0209100v1.pdf - Unspecified Download (98kB) |
|
Postscript (Requires a viewer, such as GSview)
0209100v1.ps.ps - Unspecified Download (180kB) |
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: | |
URI: | https://livrepository.liverpool.ac.uk/id/eprint/538 |