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ID 14557
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creator
CP-PACS, Collaboration
Manke, T
Shanahan, H. P.
Ali Khan, A.
Aoki, S
Burkhalter, R
Ejiri, S
Fukugita, M
Hashimoto, S
Ishizuka, N
Iwasaki, Y
Kanaya, K
Kaneko, T
Kuramashi, Y
Nagai, K
Ukawa, A
Yoshié, T
NDC
Physics
abstract
We report on a study of heavy quark bound states containing an additional excitation of the gluonic degrees of freedom. To this end we employ the nonrelativistic QCD approach on coarse and asymmetric lattices, where we discard vacuum polarization effects and neglect all spin-correction terms. We find a clear hybrid signal on all our lattices ( as = 0.15,…,0.47 fm). We have studied in detail the lattice spacing artifacts, finite volume effects, and mass dependence. Within the above approximations we predict the lowest lying hybrid excitation in charmonium to be 1.323(13) GeV above the ground state, where we use the 1P-1S splitting to set the scale. The bottomonium hybrid was found to be 1.542(8) GeV above its ground state.
journal title
Physical Review Letters
volume
Volume 82
start page
4396
end page
4399
date of issued
1999
publisher
The American Physical Society
issn
0031-9007
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 1999 The American Physical Society
relation is version of URL
http://dx.doi.org/10.1103/PhysRevLett.82.4396
department
Graduate School of Science