English

Reconciling the X(2240) with the Y(2175)

High Energy Physics - Phenomenology 2020-05-06 v1

Abstract

In the present work, we reanalyzed the cross sections for e+eK+Ke^+ e^- \to K^+K^-, where a new structure X(2240)X(2240) was reported by BES III Collaboration. By including the interference between the direct coupling and vector meson intermediate processes, we find the mass and width of X(2240)X(2240) are 2197.4±4.42197.4\pm 4.4 MeV and 75.6±7.275.6\pm 7.2 MeV, respectively, which are well consistent with the PDG average values of the resonance parameters for Y(2175)Y(2175), thus, we conclude that the X(2240)X(2240) should be the same state as the Y(2175)Y(2175).

Keywords

Cite

@article{arxiv.2004.09701,
  title  = {Reconciling the X(2240) with the Y(2175)},
  author = {Dian-Yong Chen and Jing Liu and Jun He},
  journal= {arXiv preprint arXiv:2004.09701},
  year   = {2020}
}

Comments

7 pages, 5 figures, 3 tables, accepted for publication in the Phys.Rev.D

R2 v1 2026-06-23T14:59:05.390Z