2002/10/17 by X. Liao, Liao, X., T. Manke +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #hep-lat
paper · pdf · doi:10.48550/arxiv.hep-lat/0210030
arxiv created 2002/10/18 · arxiv updated 2015/07/27
We present our final results for the excited charmonium spectrum from a quenched calculation using a fully relativistic anisotropic lattice QCD action. A detailed excited charmonium spectrum is obtained, including both the exotic hybrids (with JPC = 1-+, 0+-, 2+-) and orbitally excited mesons (with orbital angular momentum up to 3). Using three different lattice spacings (0.197, 0.131, and 0.092 fm), we perform a continuum extrapolation of the spectrum. We convert our results in lattice units to physical values using lattice scales set by the 1P1-1S splitting. The lowest lying exotic hybrid 1-+ lies at 4.428(41) GeV, slightly above the D**D (S+P wave) threshold of 4.287 GeV. Another two exotic hybrids 0+- and 2+- are determined to be 4.70(17) GeV and 4.895(88) GeV, respectively. Our finite volume analysis confirms that our lattices are large enough to accommodate all the excited states reported here.