Charmonium spectroscopy with heavy Kogut-Susskind quarks

Abstract

Charmonium spectroscopy with Kogut-Susskind valence quarks are carried out for quenched QCD at $\beta =6.0$ and for two-flavor full QCD at $\beta =5.7$. Results for 1P--1S mass splitting and estimates of ${\alpha }_{\overline{MS}}^{(5)}(m_Z)$ are reported. Problems associated with flavor breaking effects and finite size effects of $1P$ states are discussed.

Comments: 3 pages, contribution to the Lattice '94 conference, uuencoded compressed ps-file