https://doi.org/10.1140/epjc/s10052-009-1097-9
Regular Article - Theoretical Physics
Analysis of the Y(4140) with QCD sum rules
Department of Physics, North China Electric Power University, Baoding, 071003, China
* e-mail: wangzgyiti@yahoo.com.cn
Received:
24
May
2009
Revised:
16
June
2009
Published online:
21
July
2009
In this article, we assume that there exists a scalar
molecular state in the J/ψ
φ 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
GeV, which is inconsistent with the experimental data. The
is probably a virtual state and is not related to the meson Y(4140). Another possibility, such as a hybrid charmonium, is not excluded.
PACS: 12.39.Mk – / 12.38.Lg –
© Springer-Verlag , 2009
