arXiv:1411.5136·v2·High Energy Physics — Phenomenology

Observation of $e^{+} e^{-} \to χ_{c 0} ω$ and missing higher charmonium $ψ (4 S)$

Dian-Yong Chen🇨🇳 · Xiang Liu🇨🇳 · Takayuki Matsuki🇯🇵

Abstract

Stimulated by the recent BESIII observation of a new resonance in $e^{+} e^{-} \to ω χ_{c 0}$ and by the fact that this state is consistent with our predicted $ψ (4 S)$ , in this work we estimate the meson loop contribution to $ψ (4 S) \to ω χ_{c 0}$ . The evaluation indicates that our theoretical estimate can overlap with the experimental data in a reasonable parameter range. This fact shows that introduction of the missing higher charmonium $ψ (4 S)$ provides a possible explanation to the recent BESIII observation. The upper limit of a branching ratio of $ψ (4 S) \to η J / ψ$ is also predicted as $1.9 \times 1 0^{- 3}$ , which can be further tested by BESIII, Belle and forthcoming BelleII.

Comments: 8 pages, 6 figures and 2 tables. More discussions added. Accepted by PRD

Observation of e+e−→χc0​ω and missing higher charmonium ψ(4S)

Abstract

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Observation of $e^{+} e^{-} \to χ_{c 0} ω$ and missing higher charmonium $ψ (4 S)$

Citation historyopen in Citation History ↗