Phys. Rev. D
74,
031106(R)
(2006)
[6 pages]
Observation of ψ(3770)→γχc0
R. A. Briere et al. CLEO Collaboration
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R. A. Briere1, I. Brock1, J. Chen1, T. Ferguson1, G. Tatishvili1, H. Vogel1, M. E. Watkins1, J. L. Rosner2, N. E. Adam3, J. P. Alexander3, K. Berkelman3, D. G. Cassel3, J. E. Duboscq3, K. M. Ecklund3, R. Ehrlich3, L. Fields3, R. S. Galik3, L. Gibbons3, R. Gray3, S. W. Gray3, D. L. Hartill3, B. K. Heltsley3, D. Hertz3, C. D. Jones3, J. Kandaswamy3, D. L. Kreinick3, V. E. Kuznetsov3, H. Mahlke-Krüger3, T. O. Meyer3, P. U. E. Onyisi3, J. R. Patterson3, D. Peterson3, J. Pivarski3, D. Riley3, A. Ryd3, A. J. Sadoff3, H. Schwarthoff3, X. Shi3, S. Stroiney3, W. M. Sun3, T. Wilksen3, M. Weinberger3, S. B. Athar4, R. Patel4, V. Potlia4, H. Stoeck4, J. Yelton4, P. Rubin5, C. Cawlfield6, B. I. Eisenstein6, I. Karliner6, D. Kim6, N. Lowrey6, P. Naik6, C. Sedlack6, M. Selen6, E. J. White6, J. Wiss6, M. R. Shepherd7, D. Besson8, T. K. Pedlar9, D. Cronin-Hennessy10, K. Y. Gao10, D. T. Gong10, J. Hietala10, Y. Kubota10, T. Klein10, B. W. Lang10, R. Poling10, A. W. Scott10, A. Smith10, S. Dobbs11, Z. Metreveli11, K. K. Seth11, A. Tomaradze11, P. Zweber11, J. Ernst12, H. Severini13, S. A. Dytman14, W. Love14, V. Savinov14, O. Aquines15, Z. Li15, A. Lopez15, S. Mehrabyan15, H. Mendez15, J. Ramirez15, G. S. Huang16, D. H. Miller16, V. Pavlunin16, B. Sanghi16, I. P. J. Shipsey16, B. Xin16, G. S. Adams17, M. Anderson17, J. P. Cummings17, I. Danko17, J. Napolitano17, Q. He18, J. Insler18, H. Muramatsu18, C. S. Park18, E. H. Thorndike18, T. E. Coan19, Y. S. Gao19, F. Liu19, M. Artuso20, S. Blusk20, J. Butt20, J. Li20, N. Menaa20, R. Mountain20, S. Nisar20, K. Randrianarivony20, R. Redjimi20, R. Sia20, T. Skwarnicki20, S. Stone20, J. C. Wang20, K. Zhang20, S. E. Csorna21, G. Bonvicini22, D. Cinabro22, M. Dubrovin22, A. Lincoln22, D. M. Asner23, and K. W. Edwards23 (CLEO Collaboration)
1Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
2Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
3Cornell University, Ithaca, New York 14853, USA
4University of Florida, Gainesville, Florida 32611, USA
5George Mason University, Fairfax, Virginia 22030, USA
6University of Illinois, Urbana-Champaign, Illinois 61801, USA
7Indiana University, Bloomington, Indiana 47405, USA
8University of Kansas, Lawrence, Kansas 66045, USA
9Luther College, Decorah, Iowa 52101, USA
10University of Minnesota, Minneapolis, Minnesota 55455, USA
11Northwestern University, Evanston, Illinois 60208, USA
12State University of New York at Albany, Albany, New York 12222, USA
13University of Oklahoma, Norman, Oklahoma 73019, USA
14University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
15University of Puerto Rico, Mayaguez, Puerto Rico 00681
16Purdue University, West Lafayette, Indiana 47907, USA
17Rensselaer Polytechnic Institute, Troy, New York 12180, USA
18University of Rochester, Rochester, New York 14627, USA
19Southern Methodist University, Dallas, Texas 75275, USA
20Syracuse University, Syracuse, New York 13244, USA
21Vanderbilt University, Nashville, Tennessee 37235, USA
22Wayne State University, Detroit, Michigan 48202, USA
23Carleton University, Ottawa, Ontario, Canada K1S 5B6
Received 12 May 2006; published 15 August 2006
From e+e- collision data acquired with the CLEO-c detector at CESR, we search for the non-DD̅ decays ψ(3770)→γχcJ, with χcJ reconstructed in four exclusive decays modes containing charged pions and kaons. We report the first observation of such decays for J=0 with a branching ratio of (0.73±0.07±0.06)%. The rates for different J are consistent with the expectations assuming ψ(3770) is predominantly a 13D1 state of charmonium, but only if relativistic corrections are applied.
© 2006 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevD.74.031106
DOI:
10.1103/PhysRevD.74.031106
PACS:
14.40.Gx, 13.20.−v, 13.20.Gd
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