Charmonium Spectrum from Quenched QCD with Overlap Fermions

S. Tamhankar; A. Alexandru; Y. Chen; S. J. Dong; T. Draper; I. Horvath; F. X. Lee; K. F. Liu; N. Mathur; J. B. Zhang

doi:10.1016/j.nuclphysbps.2004.11.253

Charmonium Spectrum from Quenched QCD with Overlap Fermions

High Energy Physics - Lattice 2008-11-26 v1

Authors: S. Tamhankar , A. Alexandru , Y. Chen , S. J. Dong , T. Draper , I. Horvath , F. X. Lee , K. F. Liu , N. Mathur , J. B. Zhang

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Abstract

We present preliminary results using overlap fermions for the charmonium spectrum, in particular for hyperfine splitting. Simulations are performed on $16^3 \times 72$ lattices, with Wilson gauge action at $\beta=6.3345$ . Depending on how the scale is set, we obtain 104(5) MeV (using $1\bar{P}-1\bar{S}$ ) or 88(4) MeV (using $r_0$ =0.5 fm) for the hyperfine splitting.

Keywords

charmonium spectrum quenched QCD overlap fermions hyperfine splitting Wilson gauge action

Cite

@article{arxiv.hep-lat/0409128,
  title  = {Charmonium Spectrum from Quenched QCD with Overlap Fermions},
  author = {S. Tamhankar and A. Alexandru and Y. Chen and S. J. Dong and T. Draper and I. Horvath and F. X. Lee and K. F. Liu and N. Mathur and J. B. Zhang},
  journal= {arXiv preprint arXiv:hep-lat/0409128},
  year   = {2008}
}

Comments

3 pages, 5 fiugres. Talk presented at Lattice 2004 (heavy)

Charmonium Spectrum from Quenched QCD with Overlap Fermions

Abstract

Keywords

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