Spectrum of the charmed baryons in 2+1-flavor lattice QCD

We extract the spectrum of charmed baryons on 32³ × 64, 2 + 1-flavor gauge ensembles. Calculations are performed with almost physical light quarks, m_π ∼ 156 MeV, and physical strange and charm quarks. A relativistic heavy-quark action is used for valance charm quarks to suppress the systematic errors. We employ a two-fold variational analysis in order to access the excited states by varying the interpolating operators and smearing parameters independently. In this contribution, we report the status of our on-going calculations and present the preliminary results for positive and negative parity, spin-1/2 and spin-3/2 states. (author)