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The dynamical up-down and strange quark masses are tuned to their physical values, reweighted from those employed in the configuration generation. At the physical point, the inverse lattice spacing determined from the $\\Omega$ baryon mass gives $a^{-1}=2.194(10)$ GeV, and thus the spatial extent becomes $L = 32 a = 2.88(1)$ fm. 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Ukawa, K.-I. Ishikawa, K. Kanaya, M. Okawa, N. Ishizuka, N. Ukita, S. Aoki, T. Yoshi\\'e (PACS-CS collaboration), Y. Kuramashi, Y. Namekawa, Y. Taniguchi","submitted_at":"2013-01-21T03:32:43Z","abstract_excerpt":"We investigate the charmed baryon mass spectrum using the relativistic heavy quark action on 2+1 flavor PACS-CS configurations previously generated on $32^3 \\times 64$ lattice. The dynamical up-down and strange quark masses are tuned to their physical values, reweighted from those employed in the configuration generation. At the physical point, the inverse lattice spacing determined from the $\\Omega$ baryon mass gives $a^{-1}=2.194(10)$ GeV, and thus the spatial extent becomes $L = 32 a = 2.88(1)$ fm. 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