A measurement of the Cabibbo-suppressed decays D0 → π-π+ and D0 → K-K+

P. L. Frabetti, H. W.K. Cheung, J. P. Cumalat, C. Dallapiccola, J. F. Ginkel, S. V. Greene, W. E. Johns, M. S. Nehring, J. N. Butler, S. Cihangir, I. Gaines, P. H. Garbincius, L. Garren, S. A. Gourlay, D. J. Harding, P. Kasper, A. Kreymer, P. Lebrun, S. Shukla, M. VittoneS. Bianco, F. L. Fabbri, S. Sarwar, A. Zallo, R. Culbertson, R. W. Gardner, R. Greene, J. Wiss, G. Alimonti, G. Bellini, B. Caccianiga, L. Cinquini, M. Di Corato, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, E. Meroni, L. Moroni, D. Pedrini, L. Perasso, A. Sala, S. Sala, D. Torretta, D. Buchholz, D. Claes, B. Gobbi, B. O'Reilly, J. M. Bishop, N. M. Cason, C. J. Kennedy, G. N. Kim, T. F. Lin, D. L. Puseljic, R. C. Ruchti, W. D. Shephard, J. A. Swiatek, Z. Y. Wu, V. Arena, G. Boca, C. Castoldi, G. Gianini, S. P. Ratti, C. Riccardi, P. Vitulo, A. Lopez, G. P. Grim, V. S. Paolone, P. M. Yager, J. R. Wilson, P. D. Sheldon, F. Davenport, J. F. Filaseta, G. R. Blackett, M. Pisharody, T. Handler, B. G. Cheon, J. S. Kang, K. Y. Kim

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Abstract

We report a measurement of the relative branching ratio of two Cabibbo-suppressed decay modes: D0 → π-π+ and D0 → K-K+. The data were accumulated in the 1990-1991 fixed target run of Fermilab high energy photoproduction experiment E687. The branching ratios of these modes relative to the Cabibbo-allowed decay D0 → K-π+ are also presented. The relative branching ratios are measured to be Γ(D0 → KK)/Γ(D0 → ππ) = 2.53 ± 0.46 ± 0.19, Γ(D0 → KK)/Γ(D0 → Kπ) = 0.109 ± 0.007 ± 0.009, and Γ(D0 → ππ)/Γ(D0 → Kπ) = 0.043 ± 0.007 ± 0.003.

Original languageEnglish (US)
Pages (from-to)295-302
Number of pages8
JournalPhysics Letters B
Volume321
Issue number3
DOIs
StatePublished - Jan 27 1994

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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