name

Masataka Okamoto

refid

28699

email

okamoto@rccp.tsukuba.ac.jp

title

Quenched charmonium spectrum on anisotropic lattices

collaboration

CP-PACS collaboration:
A.~Ali Khan, S.~Aoki, R.~Burkhalter, S.~Ejiri,
M.~Fukugita, S.~Hashimoto, N.~Ishizuka, Y.~Iwasaki,
K.~Kanaya, T.~Kaneko, Y.~Kuramashi, T.~Manke, K.~Nagai,
M.~Okamoto(*), M.~Okawa, H.P.~Shanahan, Y.~Taniguchi,
A.~Ukawa, T.~Yoshi\'e

(*)speaker

abstract

We present our preliminary results of the charmonium spectrum
on anisotropic lattices. Simulations are carried out
in the quenched approximation with the standard plaquette gauge action
and a mean-field improved asymmetric clover quark action.
We measure the spectrum of S- and P-states and hybrid states
with non-perturbatively tuned speed of light at several lattice spacings
and a fixed renormalized anisotropy. We discuss the scaling behavior
of our results of these masses and mass splittings.

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