1. Low-energy scattering of the (D*...*)± system and the resonancelike structure Zc(4025).
- Author
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Ying Chen, Ming Gong, Yu-Hong Lei, Ning Li, Jian Liang, Chuan Liu, Jin-Long Liu, Yong-Fu Liu, Yu-Bin Liu, Zhaofeng Liu, Jian-Ping Ma, Zhan-Lin Wang, and Jian-Bo Zhang
- Subjects
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D mesons , *MESONS , *PIONS ,SCATTERING - Abstract
In this paper, low-energy scattering of the (D*...*)± meson system is studied within Liischer's finite-size formalism using Nf = 2 twisted-mass gauge field configurations. With three different pion mass values, the 5-wave threshold scattering parameters--namely the scattering length a0 and the effective range r0--are extracted in the JPC = l+- channel. Our results indicate that, in this particular channel, the interaction between the two vector charmed mesons is weakly repulsive in nature and hence it does not support the possibility of a shallow bound state for the two mesons, at least for the pion mass values being studied. However, these results might suffer from undetermined systematic errors due to low-lying states ignored in this exploratory study. Still, it provides some useful information on the nature of the newly discovered resonance-like structure Zc(4025) observed in various experiments. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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