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
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.
|Glasgow Author(s):||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|