Two charged strangeonium-like structures observable in the Y(2175)→ϕ(1020)π + π − process
2012; Springer Science+Business Media; Volume: 72; Issue: 5 Linguagem: Inglês
10.1140/epjc/s10052-012-2008-z
ISSN1434-6052
AutoresDian-Yong Chen, Xiang Liu, Takayuki Matsuki,
Tópico(s)High-Energy Particle Collisions Research
ResumoVia the Initial Single Pion Emission (ISPE) mechanism, we study the ϕ(1020)π + invariant mass spectrum distribution of Y(2175)→ϕ(1020)π + π −. Our calculation indicates there exist a sharp peak structure $(Z_{s1}^{+})$ close to the $K\bar{K}^{\ast}$ threshold and a broad structure $(Z_{s2}^{+})$ near the $K^{\ast}\bar{K}^{\ast}$ threshold. In addition, we also investigate the ϕ(1680)→ϕ(1020)π + π − process due to the ISPE mechanism, where a sharp peak around the $K\bar{K}^{\ast}$ threshold appears in the ϕ(1020)π + invariant mass spectrum distribution. We suggest to carry out the search for these charged strangeonium-like structures in future experiments, especially Belle II, Super-B and BESIII.
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