The spectrum of D_s mesons from lattice QCD

Dougall, A, Kenway, RD, Maynard, CM and McNeile, C (2003) The spectrum of D_s mesons from lattice QCD. Phys.Lett.B, 569 (1-2). pp. 41-44.

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Abstract

The spectrum of orbitally excited $D_s$ mesons is computed in the continuum limit of quenched lattice QCD. The results are consistent with the interpretation that the narrow resonance in the $D_s \pi^0$ channel discovered by the BABAR Collaboration is a $J^P=0^+$ $c\bar{s}$ meson. Furthermore, within statistical errors, the $1^+-1^-$ and the $0^+-0^-$ mass splittings are equal, in agreement with the chiral multiplet structure predicted by heavy hadron chiral effective theory. On our coarsest lattice we present results from the first study of orbitally excited $D_s$ mesons with two flavors of dynamical quarks, with mass slightly larger than the strange quark mass. These results are consistent with the quenched data.

Item Type:	Article
Additional Information:	8 pages, 2 figures
Uncontrolled Keywords:	hep-lat, hep-lat, hep-ph
Subjects:	?? QC ??
Divisions:	Faculty of Science and Engineering > School of Physical Sciences > Mathematical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	19 Aug 2008 10:38
Last Modified:	17 Dec 2022 01:36
DOI:	10.1016/j.physletb.2003.07.017
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/514