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

Abstract

In the present work, we reanalyzed the cross sections for $e^{+}{e}^{-}\to K^{+}{K}^{-}$, where a new structure $X(2240)$ 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 $X(2240)$ are $2197.4\pm 4.4$ MeV and $75.6\pm 7.2$ MeV, respectively, which are well consistent with the PDG average values of the resonance parameters for $Y(2175)$, thus, we conclude that the $X(2240)$ should be the same state as the $Y(2175)$.

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

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