Study of the decay D0 → K-K+π-π+

E. M. Aitala*, S. Amato, J. C. Anjos, J. A. Appel, D. Ashery, S. Banerjee, I. Bediaga, G. Blaylock, S. B. Bracker, P. R. Burchat, R. A. Burnstein, T. Carter, H. S. Carvalho, N. K. Copty, L. M. Cremaldi, C. Darling, K. Denisenko, A. Fernandez, G. F. Fox, P. GagnonC. Gobel, K. Gounder, A. M. Halling, G. Herrera, G. Hurvits, C. James, P. A. Kasper, S. Kwan, D. C. Langs, J. Leslie, B. Lundberg, S. Maytal-Beck, B. Meadows, J. R.T. De Mello Neto, R. H. Milburn, J. M. De Miranda, A. Napier, A. Nguyen, A. B. D'Oliveira, K. O'Shaughnessy, K. C. Peng, L. P. Perera, M. V. Purohit, B. Quinn, S. Radeztsky, A. Rafatian, N. W. Reay, J. J. Reidy, A. C. Dos Reis, H. A. Rubin, D. A. Sanders, A. K.S. Santha, A. F.S. Santoro, A. J. Schwartz, M. Sheaff, R. A. Sidwell, A. J. Slaughter, M. D. Sokoloff, J. Solano, N. R. Stanton, K. Stenson, D. J. Summers, S. Takach, K. Thorne, A. K. Tripathi, S. Watanabe, R. Weiss-Babai, J. Wiener, N. Witchey, E. Wolin, D. Yi, S. Yoshida, R. Zaliznyak, C. Zhang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Using data from Fermilab fixed-target experiment E791, we measure the branching ratio for D0 → K- K+ π- π+ and its resonant components. We find Γ(D0 → K- K+ π- π+)/Γ(D0 → K- π+ π- π+) = (3.13 ± 0.37 ± 0.36)%. A coherent amplitude analysis is used to estimate the resonant components. We measure the ratios Γ(D0 → f)/Γ(D0 → K- π+ π- π+) to be (2.0 ± 0.9 ± 0.8)% for f = φρ0, (0.9 ± 0.4 ± 0.5)% for f = φπ+ π-, < 2.0% at the 90% CL for f = K * 0(892)K̄ * 0(892), and < 1.0% at the 90% CL for f = K̄ * 0(892)K+ π- or K * 0(892)K- π+.

Original languageEnglish
Pages (from-to)185-193
Number of pages9
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number1-2
StatePublished - 19 Mar 1998


FundersFunder number
Conselho Nacional de Desenvolvimento Cientı́fico e Tecnológico
U.S.-Israel Binational Science Foundation
United States Department of Energy
Universities Research Associates, Inc.
National Science Foundation
Consejo Nacional de Ciencia y Tecnología


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