Chin. Phys. Lett.  2023, Vol. 40 Issue (12): 121301    DOI: 10.1088/0256-307X/40/12/121301
THE PHYSICS OF ELEMENTARY PARTICLES AND FIELDS |
Status and Prospects of Exotic Hadrons at Belle II
Sen Jia1, Weitao Xiong2, and Chengping Shen2,3*
1School of Physics, Southeast University, Nanjing 211189, China
2Key Laboratory of Nuclear Physics and Ion-Beam Application (MOE) and Institute of Modern Physics, Fudan University, Shanghai 200443, China
3School of Physics, Henan Normal University, Xinxiang 453007, China
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Sen Jia, Weitao Xiong, and Chengping Shen 2023 Chin. Phys. Lett. 40 121301
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Abstract In the past 20 years, many new hadrons that are difficult to explain within the conventional quark model have been discovered in the quarkonium region; these are called exotic hadrons. The Belle II experiment, as the next-generation $B$ factory, provides a good platform for exploring them. The charmonium-like states can be produced at Belle II in several ways, such as $B$ meson decays, initial-state radiation processes, two-photon collisions and double charmonium production. Bottomonium-like states can be produced directly in $e^+e^-$ colliding energies at Belle II with low continuum backgrounds. Belle II plans to perform a high-statistics energy scan from the $B\bar B$ threshold up to the highest possible energy of 11.24 GeV to search for new $Y_b$ states with $J^{\scriptscriptstyle{\rm PC}}$ = $1^{--}$, $X_b$ [the bottom counterpart of $\chi_{c1}(3872)$, also known as $X(3872)$] and partners of $Z_b$ states. We give a mini-review on the status and prospects of exotic hadrons at Belle II.
Received: 29 September 2023      Review Published: 01 December 2023
PACS:  13.25.Gv (Decays of J/ψ, Υ, and other quarkonia)  
  14.40.Pq (Heavy quarkonia)  
  14.40.Rt (Exotic mesons)  
  12.38.Qk\\  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/40/12/121301       OR      https://cpl.iphy.ac.cn/Y2023/V40/I12/121301
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Sen Jia
Weitao Xiong
and Chengping Shen
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