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ID 14557
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著者
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
物理学
抄録(英)
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.
掲載誌名
Physical Review Letters
82巻
開始ページ
4396
終了ページ
4399
出版年月日
1999
出版者
The American Physical Society
ISSN
0031-9007
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
Copyright (c) 1999 The American Physical Society
関連情報URL(IsVersionOf)
http://dx.doi.org/10.1103/PhysRevLett.82.4396
部局名
理学研究科