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  • Bai, X. H.; Bai, Y.; Ban, Y.; Bettoni, D.; Boyko, I.; Cai, X.; Cetin, S. A.; Chelkov, G.; Chen, H. S.; Chen, S. J.; Chen, X. R.; Dedovich, D.; Denig, A.; Ding, Y.; Fang, J.; Fang, Y.; Felici, G.; Gao, Y. G.; Gersabeck, E. M.; Gong, L.; Gu, M. H.; Gu, Y. T.; Guo, L. B.; Irshad, M.; Janchiv, S.; Ji, X. L.; Kang, X. S.; Kiuchi, R.; Kolcu, O. B.; Kupsc, A.; Larin, P.; Lavania, A.; Lei, Z. H.; Leithoff, H.; Li, C.; Li, G.; Li, H. B.; Li, H. J.; Li, J. S.; Li, L.; Li, P. R.; Li, X. L.; Liang, H.; Liu, F.; Liu, H.; Liu, K. Y.; Liu, M. H.; Liu, W. M.; Liu, Z. Q.; Lou, X. C.; Luo, P. W.; Ma, Q. M.; Maas, F. E.; Mitchell, R. E.; Muramatsu, H.; Nefedov, Y.; Pan, X.; Pan, Y.; Peters, K.; Ping, R. G.; Prasad, V.; Qi, K. H.; Qi, T. Y.; Rashid, K. H.; Shao, M.; Shen, C. P.; Shen, P. X.; Shi, X.; Song, W. M.; Sosio, S.; Sun, Y. K.; Tang, J.; Wang, K.; Wang, M.; Wang, X. F.; Wang, Y.; Wang, Z.; Wen, S. P.; White, D. J.; Wiedner, U.; Xia, L.; Xu, Y. C.; Yan, L.; Yang, S. L.; Yang, Y. X.; You, Z. Y.; Yuan, L.; Zhang, H. H.; Zhang, L. Q.; Zhang, L.; Zhang, Y.; Zhao, J. Z.; Zhao, L.; Zhao, S. J.; Zhao, Y. B.; Zhou, L. P.; Zhou, X.; Zhou, X. R.; Zhou, X. Y.; Zhu, W. J.

    The journal of high energy physics, 04/2022, Letnik: 2022, Številka: 4
    Journal Article

    A bstract Using data collected with the BESIII detector in e + e − collisions at center-of-mass energies between 4.178 and 4.226 GeV and corresponding to 6.32 fb − 1 of integrated luminosity, we report the amplitude analysis and branching-fraction measurement of the D s + → π + π 0 η ′ decay. We find that the dominant intermediate process is D s + → ρ + η ′ and the significances of other resonant and nonresonant processes are all less than 3 σ . The upper limits on the branching fractions of S -wave and P -wave nonresonant components are set to 0.10% and 0.74% at the 90% confidence level, respectively. In addition, the branching fraction of the D s + → π + π 0 η ′ decay is measured to be (6 . 15 ± 0 . 25(stat . ) ± 0 . 18(syst . ))%, which receives significant contribution only from D s + → ρ + η ′ according to the amplitude analysis.