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Based on a sample of (2712. 414. 3) 10⁶\; (3686) events collected with the BESIII detector, a partial wave analysis of the decay (3686) ⁰⁰+c. c. is performed to investigate ^* and ^* resonances in the ⁰⁰ and ⁰ invariant mass distributions. Significant contributions are found from the (1405), (1520), (1600), (1670), (1690), (1800), (1890), (2325), (1385), (1660), (1670), (1750), and (1910). The masses, widths, and production branching fractions for each component are determined. In addition, the branching fraction of (3686) ⁰⁰+c. c. is measured to be (1. 5440. 0130. 069) 10^-4 for the first time, where the first uncertainty is statistical and the second systematic.
Collaboration et al. (Thu,) studied this question.
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