Charmonium Spectrum from Quenched QCD with Overlap Fermions

Simple item page
dc.creatorTamhankar, S.
dc.creatorAlexandru, A.
dc.creatorChen, Y.
dc.creatorDong, S. J.
dc.creatorDraper, T.
dc.creatorHorvath, I.
dc.creatorLee, F. X.
dc.creatorLiu, K. F.
dc.creatorMathur, N.
dc.creatorZhang, J. B.
dc.date2005-07-20
dc.date.accessioned2026-07-07T11:26:37Z
dc.date.available2026-07-07T11:26:37Z
dc.descriptionWe present the first study of the charmonium spectrum using overlap fermions, on quenched configurations. Simulations are performed on $16^3 \times 72$ lattices, with Wilson gauge action at $β$ = 6.3345. We demonstrate that we have discretization errors under control at about 5%. We obtain 88(4) MeV for hyperfine splitting using the $r_0$ scale, and 121(6) MeV using the ($1\bar{P}-1\bar{S}$) scale. This paper raises the possibility that the discrepancy between the lattice results and the experimental value for charmonium hyperfine splitting can be resolved using overlap fermions to simulate the charm quark on lattice.
dc.description10 pages, 9 figures
dc.identifierhttps://arxiv.org/abs/hep-lat/0507027
dc.identifierhttp://arxiv.org/abs/hep-lat/0507027
dc.identifierPhys.Lett.B638:55-60,2006
dc.identifierdoi:10.1016/j.physletb.2006.04.055
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/195882
dc.subjectHigh Energy Physics - Lattice
dc.titleCharmonium Spectrum from Quenched QCD with Overlap Fermions
dc.typetext

Files

Collections

arXiv