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# The spectrum of D_s mesons from lattice QCD

Dougall, A.; Kenway, R.D.; Maynard, C.M. and McNeile, C. (2003) The spectrum of D_s mesons from lattice QCD. Physics Letters B, 569 (1-2). pp. 41-44. ISSN 0370-2693

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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 LTH 582. arXiv Number: arXiv:hep-lat/0307001v1. Available online 6 August 2003. 4 September 2003. PRECISION COMPUTATION; DECAY CONSTANTS; SPECTROSCOPY; SCALE; QUARK Q Science > QC Physics Academic Faculties, Institutes and Research Centres > Faculty of Science > Department of Mathematical Sciences 10.1016/j.physletb.2003.07.017 http://arxiv.org/abs/hep-lat/0307001 No Published 514 19 Aug 2008 11:38 10 May 2012 11:09

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