Dalitz plot analysis ofDs+→K+K−π+

R. E. Mitchell,M. R. Shepherd, D. Besson,T. K. Pedlar, J. Xavier,D. Cronin-Hennessy,K. Y. Gao,J. Hietala,Y. Kubota, T. Klein,R. Poling, A. W. Scott, P. Zweber,S. Dobbs, Z. Metreveli, K. K. Seth, B. J. Y. Tan, A. Tomaradze,J. Libby, L. Martin,A. Powell,C. Thomas,G. Wilkinson,H. Mendez, J. Y. Ge,D. H. Miller, I. P. J. Shipsey,B. Xin,G. S. Adams, D. Hu, B. Moziak, J. Napolitano,K. M. Ecklund, Q. He,J. Insler,H. Muramatsu,C. S. Park, E. H. Thorndike, F. Yang,M. Artuso,S. Blusk, S. Khalil, R. Mountain,K. Randrianarivony,N. Sultana, T. Skwarnicki,S. Stone, J. C. Wang, L. M. Zhang, G. Bonvicini, D. Cinabro, M. Dubrovin,A. Lincoln,M. J. Smith, P. Zhou, J. Zhu, P. Naik,J. Rademacker, D. M. Asner, K. W. Edwards,J. Reed, A. N. Robichaud, G. Tatishvili, E. J. White,R. A. Briere,H. Vogel,P. U. E. Onyisi,J. L. Rosner, J. P. Alexander, D. G. Cassel, J. E. Duboscq, R. Ehrlich,L. Fields, L. Gibbons, R. Gray,S. W. Gray, D. L. Hartill, B. K. Heltsley, D. Hertz, J. M. Hunt, J. Kandaswamy, D. L. Kreinick, V. E. Kuznetsov,J. Ledoux, H. Mahlke-Krüger,J. R. Patterson, D. Peterson, D. Riley, A. Ryd, A. J. Sadoff, X. Shi,S. Stroiney,W. M. Sun,T. Wilksen, J. Yelton, P. Rubin, N. Lowrey,S. Mehrabyan, M. Selen, J. Wiss

Physical Review D（2009）

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摘要

A Dalitz plot analysis of approximately 13,000 Ds+ decays to pi+pi-pi+ has been performed. The analysis uses a 384 fb-1 data sample recorded by the BaBar detector at the PEP-II asymmetric-energy e+e- storage ring running at center of mass energies near 10.6 GeV. Amplitudes and phases of the intermediate resonances which contribute to this final state are measured. A high precision measurement of the ratio of branching fractions is performed: BR(Ds+ -> pi+pi-pi+)/BR(Ds+ -> K+ K- pi+)=0.199 +/- 0.004 +/- 0.009. Using a model-independent partial wave analysis, the amplitude and phase of the S-wave have been measured.

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