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Exotic Mesons with Hidden Bottom Near Thresholds |
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| Authors: | S. Ohkoda Y. Yamaguchi S. Yasui K. Sudoh A. Hosaka |
| Affiliation: | 1. Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki, Osaka, 567-0047, Japan 2. KEK Theory Center, Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization, 1-1 Oho, Ibaraki, 305-0801, Japan 3. Nishogakusha University, 6-16, Sanbancho, Chiyoda, Tokyo, 102-8226, Japan |
| Abstract: | We discuss exotic meson spectroscopy near open bottom thresholds. Assuming the exotic mesons as ${B^{(ast)}bar{B}^{(ast)}}$ molecular states, we study the interaction among two heavy mesons in terms of the one boson exchange potential model. It is shown that masses of Z b (10610) and Z b (10650) are reproduced as ${B^{(ast)}bar{B}^{(ast)}}$ bound and resonance states. Besides, we also show that ${B^{(ast)}bar{B}^{(ast)}}$ molecular states having various exotic quantum numbers can exist around the thresholds. By contrast, there are no ${D^{(ast)}bar{D}^{(ast)}}$ molecular states having exotic quantum numbers. |
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