D and D_s meson spectroscopy

Details D and D_s meson spectroscopy D and D_s meson spectroscopy

2011-03-28

arxiv.org/abs/1103.5506v2

Phys. Rev. D 84, 054505 (2011)

Physics

High Energy Physics

High Energy Physics - Lattice

18 pages; updated version reflecting changes during the publishing process

Scientific paper

Results are presented for the low-lying spectrum of D and D_s mesons calculated in lattice QCD using 2+1 flavor Clover-Wilson configurations made available by the PACS-CS collaboration. For the heavy quark, the Fermilab method is employed. The main focus is S- and P-wave states of charmed and charmed-strange mesons, where previous lattice QCD results have been mostly from quenched calculations. In addition to the ground states, some excited states are extracted. To check the method, calculations of the charmonium spectrum are also carried out. For charmonium, the low-lying spectrum agrees favorably with experiment. For heavy-strange and heavy-light systems substantial differences in comparison to experiment values remain for some states.

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