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Scaling of the B and D meson spectrum in lattice QCD

Hein, J., Collins, S., Davies, C.T.H., Khan, A.A., Newton, H., Morningstar, C., Shigemitsu, J., and Sloan, J. (2000) Scaling of the B and D meson spectrum in lattice QCD. Physical Review D, 62 (7). art 074503. ISSN 1550-7998 (doi:10.1103/PhysRevD.62.074503)

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Publisher's URL: http://dx.doi.org/10.1103/PhysRevD.62.074503

Abstract

We give results for the B and the D meson spectrum using NRQCD on the lattice in the quenched approximation. The masses of radially and orbitally excited states are calculated as well as S-wave hyperfine and P-wave fine structure. Radially excited P states are observed for the first time. Radial and orbital excitation energies match well to experiment, as does the strange-nonstrange S-wave splitting. We compare the light and heavy quark mass dependence of various splittings to experiment. Our B results cover a range in lattice spacings of more than a factor of two. Our D results are from a single lattice spacing and we compare them to numbers in the literature from finer lattices using other methods. We see no significant dependence of physical results on the lattice spacing.

Item Type:Article
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Shigemitsu, Prof Junko and Davies, Prof Christine
Authors: Hein, J., Collins, S., Davies, C.T.H., Khan, A.A., Newton, H., Morningstar, C., Shigemitsu, J., and Sloan, J.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review D
Publisher:American Physical Society
ISSN:1550-7998
ISSN (Online):1089-4918

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