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  • Amplitude analysis and branching fraction measurement of D s + $$ {D}_s^{+} $$ → K − K + π + π + π
    O. Bakina; I. Balossino; K. Begzsuren; I. Boyko; J. F. Chang; X. R. Chen; A. Dbeyssi; R. E. de Boer; X. Dong; Y. Fang; L. Fava; F. Feldbauer; M. Fritsch; C. D. Fu; Y. Gao; S. Gu; W. Y. Han; K. L. He; Z. L. Hou; J. F. Hu; Z. Huang; T. Hussain; J. B. Jiao; I. K. Keshk; R. Kiuchi; P. Larin; G. Li; J. S. Li; Lei Li; W. D. Li; Xiaoyu Li; J. Libby; C. X. Liu; Huanhuan Liu; J. B. Liu; Q. Liu; S. B. Liu; F. X. Lu; M. M. Ma; R. T. Ma; X. Y. Ma; F. E. Maas; S. Malde; A. Mangoni; X. H. Mo; N. Yu Muchnoi; H. Muramatsu; S. Nakhoul; S. Pacetti; H. R. Qi; T. Y. Qi; X. S. Qin; C. F. Redmer; A. Rivetti; M. Scodeggio; C. P. Shen; P. X. Shen; H. C. Shi; X. Shi; W. M. Song; F. F. Sui; J. F. Sun; L. Sun; S. S. Sun; W. Y. Sun; X Sun; Y. K. Sun; C. J. Tang; V. Thoren; C. W. Wang; H. J. Wang; L. L. Wang; W. Wang; X. L. Wang; Y. D. Wang; Y. Y. Wang; D. H. Wei; D. J. White; G. Wilkinson; M. Wolke; L. J. Wu; X. Wu; Z. Wu; L. Xia; Y. G. Xie; Y. H. Xie; J. H. Yin; C. Z. Yuan; Y. Zeng; J. Z. Zhang; X. D. Zhang; J. Y. Zhao; S. J. Zhao; Y. X. Zhao; B. Zheng; Q. Zhou; X. Y. Zhou; A. N. Zhu; J. Zhu; X. Y. Zhu

    The journal of high energy physics, 07/2022, Letnik: 2022, Številka: 7
    Journal Article

    Abstract Using e + e − annihilation data corresponding to a total integrated luminosity of 6.32 fb −1 collected at the center-of-mass energies between 4.178 and 4.226 GeV with the BESIII detector, we perform an amplitude analysis of the decay D s + $$ {D}_s^{+} $$ → K − K + π + π + π − and determine the relative fractions and phases of different intermediate processes. Absolute branching fraction of D s + $$ {D}_s^{+} $$ → K − K + π + π + π − decay is measured to be (6.60 ± 0.47stat. ± 0.38syst. ) × 10 −3. The dominant intermediate process is D s + $$ {D}_s^{+} $$ → a 1(1260)+ ϕ, ϕ → K − K + , a 1(1260)+ → ρπ + , ρ → π + π − , with a branching fraction of (5.15 ± 0.41stat. ± 0.32syst. ) × 10 −3.

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