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2022-12-15T03:35:37Z
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Hybrid Quarkonia on Asymmetric Lattices
Hybrid Quarkonia on Asymmetric Lattices
Manke, T.
Shanahan, H.P.
Khan, A.Ali
Aoki, S.
Burkhalter, R.
Ejiri, S.
Fukugita, M.
Hashimoto, S.
Ishizuka, N.
Iwasaki, Y.
Kanaya, K.
Kaneko, T.
Kuramashi, Y.
Nagai, K.
Okawa, M.
Ukawa, A.
Yoshie, T.
CP-PACS, Collaboration
(C) 1999 American Physical Society
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 ( a s =0.15,…,0.47fm ). 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.
American Physical Society
1999-05
eng
journal article
http://hdl.handle.net/10191/27663
https://niigata-u.repo.nii.ac.jp/records/2486
info:doi/10.1103/PhysRevLett.8396
AA00773679
00319007
Physical Review Letters
Physical Review Letters
82
22
4396
4399
https://niigata-u.repo.nii.ac.jp/record/2486/files/82_22_4396-4399.pdf
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2019-07-29