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  • Amplitude analysis and bran...
    Achasov, M. N.; Ahmed, S.; Amoroso, A.; Bennett, J. V.; Bertani, M.; Cai, X.; Calcaterra, A.; Chen, H. S.; Cibinetto, G.; Cui, X. F.; Dai, H. L.; de Boer, R. B.; De Mori, F.; Farinelli, R.; Felici, G.; Guan, C. Y.; Guo, A. Q.; He, K. L.; Huang, Z.; Huesken, N.; Irshad, M.; Ji, X. L.; Jiao, J. B.; Johansson, T.; Kang, X. S.; Kappert, R.; Khoukaz, A.; Koch, L.; Kuessner, M.; Kühn, W.; Li, H. J.; Li, J. Q.; Li, P. L.; Li, P. R.; Liang, Y. T.; Liu, B. J.; Liu, D.; Liu, Ke; Liu, S. B.; Liu, X.; Liu, Y. B.; Luo, C. L.; Luo, M. X.; Lyu, X. R.; Ma, F. C.; Ma, L. L.; Ma, X. X.; Mezzadri, G.; Muchnoi, N. Yu; Nikolaev, I. B.; Olsen, S. L.; Pan, X.; Pan, Y.; Patteri, P.; Peters, K.; Pitka, A.; Qi, M.; Qian, S.; Qian, Z.; Qin, Z. H.; Ravindran, K.; Redmer, C. F.; Rolo, M.; Schelhaas, Y.; Schnier, C.; Schoenning, K.; Shen, X. Y.; Song, W. M.; Sosio, S.; Spataro, S.; Sun, J. F.; Sun, T.; Sun, X.; Tan, Y. H.; Thoren, V.; Tsednee, B.; Wang, L. L.; Wang, X. L.; Wang, Y. F.; Wiedner, U.; Wilkinson, G.; Xiao, Z. J.; Yang, L.; Yang, Y. H.; Yuan, Z. Y.; Zhang, B. X.; Zhang, H. Y.; Zhang, J. W.; Zhang, Jianyu; Zhang, T. J.; Zhang, X. Y.; Zhang, Y. T.; Zhang, Z. H.; Zhao, J.; Zhao, J. Z.; Zhao, S. J.; Zhao, Y. X.; Zheng, J. P.; Zhong, C.; Zhou, L. P.

    Physical review. D, 07/2021, Volume: 104, Issue: 1
    Journal Article

    We report an amplitude analysis and branching fraction measurement of D+s → K+K−π+ decay using a data sample of 3.19 fb−1 recorded with BESIII detector at a center-of-mass energy of 4.178 GeV. We perform a model-independent partial wave analysis in the low K+K− mass region to determine the K+K− S-wave line shape, followed by an amplitude analysis of our very pure high-statistics sample. With the detection efficiency based on the amplitude analysis results, the absolute branching fraction is measured to be B(D+s → K+K− π+) = (5.47 ± 0.0 8stat ± 0.13sys)%.