Hybrid Quarkonia on Asymmetric Lattices
High Energy Physics - Lattice
2012-08-27 v2 High Energy Physics - Phenomenology
Abstract
We report on a study of heavy hybrid states using the NRQCD approach on coarse and asymmetric lattices, where we discard vacuum polarisation effects and neglect all spin-correction terms. We find a clear hybrid signal on all our lattices ( fm). We have studied in detail the lattice spacing artefacts, finite volume effects and mass dependence. Within the above approximations we predict the hybrid excitation in Charmonium to be 1.323(13) GeV above its ground state. The bottomonium hybrid was found to be 1.542(8) GeV above its ground state.
Keywords
Cite
@article{arxiv.hep-lat/9812017,
title = {Hybrid Quarkonia on Asymmetric Lattices},
author = {PACS Collaboration and T. Manke and H. P. Shanahan and A. A. Khan and S. Aoki and R. Burkhalter and S. Ejiri and M. Fukugita and S. Hashimoto and N. Ishizuka and Y. Iwasaki and K. Kanaya and T. Kaneko and Y. Kuramashi and K. Nagai and M. Okawa and A. Ukawa and T. Yoshie},
journal= {arXiv preprint arXiv:hep-lat/9812017},
year = {2012}
}
Comments
7 pages, Latex, 3 figures