First observation of exclusive χcJ decays to two charged and two neutral hadrons

Q. He,J. Insler,H. Muramatsu,C. S. Park,E. H. Thorndike, F. Yang,M. Artuso,S. Blusk, S. Khalil,J. Li,N. Menaa,R. Mountain,S. Nisar, K. Randrianarivony,R. Sia,N. Sultana, T. Skwarnicki,S. Stone,J. C. Wang,L. M. Zhang,G. Bonvicini,D. Cinabro,M. Dubrovin,A. Lincoln,D. M. Asner, K. W. Edwards,P. Naik,R. A. Briere,T. Ferguson,G. Tatishvili,H. Vogel,M. E. Watkins,J. L. Rosner,N. E. Adam, J. P. Alexander, D. G. Cassel,J. E. Duboscq,R. Ehrlich, L. Gibbons,R. Gray,S. W. Gray,D. L. Hartill, B. K. Heltsley,D. Hertz,C. D. Jones,J. Kandaswamy,D. L. Kreinick,V. E. Kuznetsov, H. Mahlke-Kruger,D. Mohapatra,P. U. E. Onyisi,J. R. Patterson, D. Peterson, D. Riley, A. Ryd,A. J. Sadoff, X. Shi,S. Stroiney, W. M. Sun,T. Wilksen,S. B. Athar, R. Patel, J. Yelton, P. Rubin, B. I. Eisenstein, I. Karliner,S. Mehrabyan, N. Lowrey,M. Selen,E. J. White,J. Wiss,R. E. Mitchell,M. R. Shepherd, D. Besson,T. K. Pedlar, D. Cronin-Hennessy,K. Y. Gao,J. Hietala,Y. Kubota,T. Klein,B. W. Lang,R. Poling,A. W. Scott,P. Zweber,S. Dobbs,Z. Metreveli,K. K. Seth, A. Tomaradze,K. M. Ecklund,A. Lopez,H. Mendez,J. Ramirez,J. Y. Ge,D. H. Miller,B. Sanghi, I. P. J. Shipsey,B. Xin, G. S. Adams,M. Anderson,I. Danko,D. Hu,J. Napolitano,J. Cummings,I. Danko,D. Hu,B. Moziak,J. Napolitano

PHYSICAL REVIEW D（2008）

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摘要

We study exclusive chi(c0,1,2) decays to four-hadron final states involving two charged and two neutral hadrons: pi(+)pi(-)pi(0)pi(0), K+K-pi(0)pi(0), p (p) over bar pi(0)pi(0), K+K-eta pi(0) and K-+/-pi K--/+(0)pi(0). The chi(c) states are produced in radiative decays of 3.08 x 10(6) psi(2S) resonance decays and observed in the CLEO detector. We also measure the largest substructure contributions to the modes pi(+)pi(-)pi(0)pi(0) and K-+/-pi K--/+(0)pi(0).

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elementary particles

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