期刊
PHYSICS LETTERS B
卷 680, 期 2, 页码 137-140出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2009.08.049
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资金
- National Natural Science Foundation of China [10705001]
- Fundacao para a Ciencia e a Tecnologia of the Ministerio da Ciencia, Tecnologia e Ensino Superior of Portugal [SFRH/BPD/34819/2007]
- Foundation for the Author of National Excellent Doctoral Dissertation of P.R. China (FANEDD)
- Fundação para a Ciência e a Tecnologia [SFRH/BPD/34819/2007] Funding Source: FCT
Assuming that Y(4140) is the second radial excitation of the P-wave charmonium chi(cJ)'' (J = 0, 1), the hidden charm decay mode of Y(4140) is calculated in terms of the rescattering mechanism. Our numerical results show that the upper limit of the branching ratio of the hidden charm decay Y(4140) -> J/psi phi is on the order of 10(-4)-10(-3) for both of the charmonium assumptions for Y(4140), which disfavors the large hidden charm decay pattern indicated by the CDF experiment. It seems to reveal that the pure second radial excitation of the P-wave charmonium chi(cJ)'' (J = 0, 1) is problematic. (C) 2009 Elsevier B.V. All rights reserved.
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