| Issue |
EPJ Web Conf.
Volume 212, 2019
The 12th International Workshop on e+e- Collisions from Phi to Psi (PhiPsi 2019)
|
|
|---|---|---|
| Article Number | 02009 | |
| Number of page(s) | 6 | |
| Section | Mesons of Heavy Quarks | |
| DOI | https://doi.org/10.1051/epjconf/201921202009 | |
| Published online | 17 June 2019 | |
https://doi.org/10.1051/epjconf/201921202009
Comment on the X(3915) nonstandard hadron candidate
University of Chinese Academy of Science, Beijing 100049, CHINA
* e-mail: solsensnu@gmail.com
Published online: 17 June 2019
I review the experimental evidence for the X(3915), the candidate nonstandard meson associated with ωJ/ψ resonance-like peaks in B → KωJ/ψ and γγ → ωJ/ψ near M(ωJ/ψ) = 3920 MeV, and address the conjecture that it can be identified as the χ′c2, the radial excitation of the χc2 charmonium state. Since the partial decay width for B → KX(3915) is at least an order-of-magnitude higher than that for B → Kχc2, its assignment as the χ’c2 is dubious.
© The Authors, published by EDP Sciences, 2019
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