期刊
PHYSICAL REVIEW D
卷 95, 期 7, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.95.071501
关键词
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资金
- National Natural Science Foundation of China [11575254, 11650110431]
- Chinese Academy of Sciences President's International Fellowship Initiative [2013T2J0011, 2016PM053]
- Japan Society for the Promotion of Science [S16019]
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [2013R1A1A2009695]
- Heisenberg-Landau Program
- Russian Foundation for Basic Research [15-52-04023]
- National Research Foundation of Korea [2013R1A1A2009695] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
We present a new calculation of the mass and width of the exotic 0(--) glueball in the framework of the QCD sum rules. We next construct a new current which couples to a pure 0(--) gluon state and derive consistent and stable sum rules. A previously used current in this approach was shown to be inconsistent. We obtain for this state a mass MG = 6.3(-1.1)(+0.8) GeV and an upper limit for the total width Gamma(G) <= 235 MeV. These values can be used as an important guide for the experimental search of this exotic state. We argue that the mixing of this glueball state with the 0(--) tetraquark is very small. Therefore, the exotic 0(--) glueball can be considered as a pure gluon state.
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