APS » Phys. Rev. D » Volume 78 » Issue 5

G. Bonvicini,¹ D. Cinabro,¹ M. Dubrovin,¹ A. Lincoln,¹ P. Naik,² J. Rademacker,² D. M. Asner,³ K. W. Edwards,³ J. Reed,³ R. A. Briere,⁴ T. Ferguson,⁴ G. Tatishvili,⁴ H. Vogel,⁴ M. E. Watkins,⁴ J. L. Rosner,⁵ J. P. Alexander,⁶ D. G. Cassel,⁶ J. E. Duboscq,⁶ R. Ehrlich,⁶ L. Fields,⁶ L. Gibbons,⁶ R. Gray,⁶ S. W. Gray,⁶ D. L. Hartill,⁶ B. K. Heltsley,⁶ D. Hertz,⁶ J. M. Hunt,⁶ J. Kandaswamy,⁶ D. L. Kreinick,⁶ V. E. Kuznetsov,⁶ J. Ledoux,⁶ H. Mahlke-Krüger,⁶ D. Mohapatra,⁶ P. U. E. Onyisi,⁶ J. R. Patterson,⁶ D. Peterson,⁶ D. Riley,⁶ A. Ryd,⁶ A. J. Sadoff,⁶ X. Shi,⁶ S. Stroiney,⁶ W. M. Sun,⁶ T. Wilksen,⁶ S. B. Athar,⁷ R. Patel,⁷ J. Yelton,⁷ P. Rubin,⁸ B. I. Eisenstein,⁹ I. Karliner,⁹ S. Mehrabyan,⁹ N. Lowrey,⁹ M. Selen,⁹ E. J. White,⁹ J. Wiss,⁹ R. E. Mitchell,¹⁰ M. R. Shepherd,¹⁰ D. Besson,¹¹ T. K. Pedlar,¹² D. Cronin-Hennessy,¹³ K. Y. Gao,¹³ J. Hietala,¹³ Y. Kubota,¹³ T. Klein,¹³ B. W. Lang,¹³ R. Poling,¹³ A. W. Scott,¹³ P. Zweber,¹³ S. Dobbs,¹⁴ Z. Metreveli,¹⁴ K. K. Seth,¹⁴ A. Tomaradze,¹⁴ J. Libby,¹⁵ A. Powell,¹⁵ G. Wilkinson,¹⁵ K. M. Ecklund,¹⁶ W. Love,¹⁷ V. Savinov,¹⁷ A. Lopez,¹⁸ H. Mendez,¹⁸ J. Ramirez,¹⁸ J. Y. Ge,¹⁹ D. H. Miller,¹⁹ I. P. J. Shipsey,¹⁹ B. Xin,¹⁹ G. S. Adams,²⁰ M. Anderson,²⁰ J. P. Cummings,²⁰ I. Danko,²⁰ D. Hu,²⁰ B. Moziak,²⁰ J. Napolitano,²⁰ Q. He,²¹ J. Insler,²¹ H. Muramatsu,²¹ C. S. Park,²¹ E. H. Thorndike,²¹ F. Yang,²¹ M. Artuso,²² S. Blusk,²² S. Khalil,²² J. Li,²² R. Mountain,²² S. Nisar,²² K. Randrianarivony,²² N. Sultana,²² T. Skwarnicki,²² S. Stone,²² J. C. Wang,²² and L. M. Zhang²²

(CLEO Collaboration)

¹Wayne State University, Detroit, Michigan 48202, USA
²University of Bristol, Bristol BS8 1TL, United Kingdom
³Carleton University, Ottawa, Ontario, Canada K1S 5B6
⁴Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
⁵Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
⁶Cornell University, Ithaca, New York 14853, USA
⁷University of Florida, Gainesville, Florida 32611, USA
⁸George Mason University, Fairfax, Virginia 22030, USA
⁹University of Illinois, Urbana-Champaign, Illinois 61801, USA
¹⁰Indiana University, Bloomington, Indiana 47405, USA
¹¹University of Kansas, Lawrence, Kansas 66045, USA
¹²Luther College, Decorah, Iowa 52101, USA
¹³University of Minnesota, Minneapolis, Minnesota 55455, USA
¹⁴Northwestern University, Evanston, Illinois 60208, USA
¹⁵University of Oxford, Oxford OX1 3RH, United Kingdom
¹⁶State University of New York at Buffalo, Buffalo, New York 14260, USA
¹⁷University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
¹⁸University of Puerto Rico, Mayaguez, Puerto Rico 00681
¹⁹Purdue University, West Lafayette, Indiana 47907, USA
²⁰Rensselaer Polytechnic Institute, Troy, New York 12180, USA
²¹University of Rochester, Rochester, New York 14627, USA
²²Syracuse University, Syracuse, New York 13244, USA

We perform a Dalitz plot analysis of D⁺-->K^-pi⁺pi⁺ decay with the CLEO-c data set of 572 pb^-1 of e⁺e^- collisions accumulated at the psi(3770). This corresponds to 1.6×10⁶ D⁺D^- pairs from which we select 140 793 candidate events with a small background of 1.1%. We compare our results with previous measurements using the isobar model. We modify the isobar model with an improved description of some of the contributing resonances and get better agreement with our data. We also consider a quasi-model-independent approach and measure the magnitude and phase of the contributing Kpi S wave in the range of invariant masses from the threshold to the maximum in this decay. This gives an improved description of our data over the isobar model. Finally we allow for an isospin-two pi⁺pi⁺ S wave contribution and find that adding this to both the isobar model and the quasi-model-independent approach gives the best description of our data.

©2008 The American Physical Society

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