期刊
EUROPEAN PHYSICAL JOURNAL C
卷 63, 期 1, 页码 115-122出版社
SPRINGER
DOI: 10.1140/epjc/s10052-009-1097-9
关键词
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资金
- National Natural Science Foundation of China [10775051]
- Program for New Century Excellent Talents in University [NCET-07-0282]
In this article, we assume that there exists a scalar D(s)*(D) over bar (s)* molecular state in the J/psi phi invariant mass distribution, and we study its mass using the QCD sum rules. The predictions depend heavily on the two criteria ( pole dominance and convergence of the operator product expansion) of the QCD sum rules. The value of the mass is about M(Ds*(D) over bars*) = (4.43 +/- 0.16) GeV, which is inconsistent with the experimental data. The D(s)*(D) over bar (s)* is probably a virtual state and is not related to the meson Y(4140). Another possibility, such as a hybrid charmonium, is not excluded.
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