Phys. Rev. Lett.
99,
191805
(2007)
[5 pages]
Suppressed Decays of Ds+ Mesons to Two Pseudoscalar Mesons
G. S. Adams et al. CLEO Collaboration
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G. S. Adams1, M. Anderson1, J. P. Cummings1, I. Danko1, D. Hu1, B. Moziak1, J. Napolitano1, Q. He2, J. Insler2, H. Muramatsu2, C. S. Park2, E. H. Thorndike2, F. Yang2, M. Artuso3, S. Blusk3, S. Khalil3, J. Li3, N. Menaa3, R. Mountain3, S. Nisar3, K. Randrianarivony3, R. Sia3, T. Skwarnicki3, S. Stone3, J. C. Wang3, G. Bonvicini4, D. Cinabro4, M. Dubrovin4, A. Lincoln4, D. M. Asner5, K. W. Edwards5, P. Naik5, R. A. Briere6, T. Ferguson6, G. Tatishvili6, H. Vogel6, M. E. Watkins6, J. L. Rosner7, N. E. Adam8, J. P. Alexander8, D. G. Cassel8, J. E. Duboscq8, R. Ehrlich8, L. Fields8, L. Gibbons8, R. Gray8, S. W. Gray8, D. L. Hartill8, B. K. Heltsley8, D. Hertz8, C. D. Jones8, J. Kandaswamy8, D. L. Kreinick8, V. E. Kuznetsov8, H. Mahlke-Krüger8, D. Mohapatra8, P. U. E. Onyisi8, J. R. Patterson8, D. Peterson8, D. Riley8, A. Ryd8, A. J. Sadoff8, X. Shi8, S. Stroiney8, W. M. Sun8, T. Wilksen8, S. B. Athar9, R. Patel9, J. Yelton9, P. Rubin10, B. I. Eisenstein11, I. Karliner11, N. Lowrey11, M. Selen11, E. J. White11, J. Wiss11, R. E. Mitchell12, M. R. Shepherd12, D. Besson13, T. K. Pedlar14, D. Cronin-Hennessy15, K. Y. Gao15, J. Hietala15, Y. Kubota15, T. Klein15, B. W. Lang15, R. Poling15, A. W. Scott15, P. Zweber15, S. Dobbs16, Z. Metreveli16, K. K. Seth16, A. Tomaradze16, J. Ernst17, K. M. Ecklund18, H. Severini19, W. Love20, V. Savinov20, A. Lopez21, S. Mehrabyan21, H. Mendez21, J. Ramirez21, J. Y. Ge22, D. H. Miller22, B. Sanghi22, I. P. J. Shipsey22, and B. Xin22 (CLEO Collaboration)
1Rensselaer Polytechnic Institute, Troy, New York 12180, USA
2University of Rochester, Rochester, New York 14627, USA
3Syracuse University, Syracuse, New York 13244, USA
4Wayne State University, Detroit, Michigan 48202, USA
5Carleton University, Ottawa, Ontario, Canada K1S 5B6
6Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
7Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
8Cornell University, Ithaca, New York 14853, USA
9University of Florida, Gainesville, Florida 32611, USA
10George Mason University, Fairfax, Virginia 22030, USA
11University of Illinois, Urbana-Champaign, Illinois 61801, USA
12Indiana University, Bloomington, Indiana 47405, USA
13University of Kansas, Lawrence, Kansas 66045, USA
14Luther College, Decorah, Iowa 52101, USA
15University of Minnesota, Minneapolis, Minnesota 55455, USA
16Northwestern University, Evanston, Illinois 60208, USA
17State University of New York at Albany, Albany, New York 12222, USA
18State University of New York at Buffalo, Buffalo, New York 14260, USA
19University of Oklahoma, Norman, Oklahoma 73019, USA
20University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
21University of Puerto Rico, Mayaguez, Puerto Rico 00681
22Purdue University, West Lafayette, Indiana 47907, USA
Received 31 July 2007; published 9 November 2007
Using data collected near the Ds*+Ds- peak production energy Ecm=4170 MeV by the CLEO-c detector, we study the decays of Ds+ mesons to two pseudoscalar mesons. We report on searches for the singly Cabibbo-suppressed Ds+ decay modes K+η, K+η′, π+KS0, K+π0, and the isospin-forbidden decay mode Ds+→π+π0. We normalize with respect to the Cabibbo-favored Ds+ modes π+η, π+η′, and K+KS0, and obtain ratios of branching fractions: B(Ds+→K+η)/B(Ds+→π+η)=(8.9±1.5±0.4)%, B(Ds+→K+η′)/B(Ds+→π+η′)=(4.2±1.3±0.3)%, B(Ds+→π+KS0)/B(Ds+→K+KS0)=(8.2±0.9±0.2)%, B(Ds+→K+π0)/B(Ds+→K+KS0)=(5.5±1.3±0.7)%, and B(Ds+→π+π0)/B(Ds+→K+KS0)<4.1% at 90% C.L., where the uncertainties are statistical and systematic, respectively.
© 2007 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.99.191805
DOI:
10.1103/PhysRevLett.99.191805
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