Eur. Phys. J. C (2012) 72: 2008
https://doi.org/10.1140/epjc/s10052-012-2008-z

Regular Article - Theoretical Physics

Two charged strangeonium-like structures observable in the Y(2175)→ϕ(1020)π ⁺ π ⁻ process

¹ Research Center for Hadron and CSR Physics, Lanzhou University and Institute of Modern Physics of CAS, Lanzhou, 730000, China
² School of Physical Science and Technology, Lanzhou University, Lanzhou, 730000, China
³ Nuclear Theory Group, Institute of Modern Physics of CAS, Lanzhou, 730000, China
⁴ Tokyo Kasei University, 1-18-1 Kaga, Itabashi, Tokyo, 173-8602, Japan

^* e-mail: xiangliu@lzu.edu.cn

Received: 23 February 2012
Revised: 17 April 2012
Published online: 15 May 2012

Abstract

Via 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 close to the threshold and a broad structure near the 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 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.