The doubly Cabibbo-suppressed decay D+ → 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, P. Gagnon, K. GounderA. 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. Rubinf, A. K.S. Santha, A. F.S. Santoro, A. J. Schwartz, M. Sheaff, R. A. Sidwell, A. J. Slaughter, M. D. Sokoloff, 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

7 Scopus citations


We report the observation of the doubly Cabibbo-suppressed decay D+ → K+π-π+ in data from Fermilab charm hadroproduction experiment E791. With a signal of 59 ± 13 events we measured the ratio of the branching fraction for this mode to that of the Cabibbo-favored decay D+ → K-π+π+ to be B(D+ → K+π-π+) / B(D+ → K-π+π+) = (7.7 ± 1.1 ± 0.8) × 10-3. A Dalitz plot analysis was performed to search for resonant structures.

Original languageEnglish
Pages (from-to)187-193
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number1-2
StatePublished - 3 Jul 1997


FundersFunder number
Conselho Nacional de Desenvolvimento Cientifico e Tecnol6gico
Israeli Academy of Sciences and Humanities
US Department of Energy
US National Science Foundation
US-Israel Binational Science Foundation
United States Department of Energy
Universities Research Association, Inc.
Consejo Nacional de Ciencia y Tecnología


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