"重いフレーバーを含んだ領域での格子QCDによるスペクトロスコピー"

We study heavy-heavy and heavy-light charm quark systems
using the relativistic heavy quark action. Calculations are
performed at the lattice spacing $a^{-1}=2.176(31)$ GeV and
the spatial extent $L=3$ fm with O(a)-improved Wilson
quarks. Our dynamical $ud$ and strange masses and
valence charm quarm masses are almost on the physical
values. Our results reproduce the experimental values
except for the hyperfine splittings.