Investigations on the charmless decay modes of Z sub()c3900) and Z sub()c4025

To date, the nature of Z sub()c3900)/Z sub()c4025) is not clear. In this work, we propose to study the internal structure of Z sub()c3900)/Z sub()c4025) by exploring the charmless decays. Compared to charmed decays, charmless decay channels may play a unique role since they request the annihilation...

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Bibliographic Details
Published in:Physical review. D 2016-07, Vol.94 (1)
Main Authors: Wu, Qi, Li, Gang, Shao, Fenglan, Wang, Ruiqin
Format: Article
Language:English
Subjects:
Accessibility
Channels
Cosmology
Decay
Gravitation
Mathematical analysis
Mesons
Vector mesons
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Summary:To date, the nature of Z sub()c3900)/Z sub()c4025) is not clear. In this work, we propose to study the internal structure of Z sub()c3900)/Z sub()c4025) by exploring the charmless decays. Compared to charmed decays, charmless decay channels may play a unique role since they request the annihilation of the heavy constituents. We calculate the decay width for Z sub()c3900)/Z sub()c4025)[arrowright]VP, where P and V denote the pseudoscalar and light vector meson, respectively. Here, the Z sub()c3900) and Z sub()c4025) are the molecular states of D*D and D*D*. The decay process occurs through intermediate DD*/D*D* meson loops. Based on an effective Lagrangian, we obtain sizable predictions for the branching ratios, which are accessible in experiments. The experimental measurements in the future will not only shed light on the decay mechanism but will also lead to a deeper understanding of the mysterious structure of the Z sub()c3900)/Z c(4025).
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.94.014015