Measurement of the branching ratio B(D+ → ρ0+ν)/B(D+ → K̄*0+ν)

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. Rubin, 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

Research output: Contribution to journalArticlepeer-review


We report a measurement of the branching ratio B(D+ → ρ0+ν)/B(D+ → K̄*0+ν) from the Fermilab charm hadroproduction experiment E791. Based on signals of 49 ± 17 events in the D+ → ρ0e+νe mode and 54 ± 18 events in the D+ → ρ0μ+νμ mode, we measure B(D+ → ρ0e+νe)/B(D+ → K̄*0e+νe) = 0.045 ± 0.014 ± 0.009, B(D+ → ρ0μ+νμ)/B(D+ → K̄*0μ+νμ) = 0.051 ± 0.015 ± 0.009. Combining the results from both the electronic and muonic modes, we obtain B(D+ → ρ0+ν)/B(D+ → K̄*0+ν) = 0.047 ± 0.013. This result is compared to theoretical predictions.

Original languageEnglish
Pages (from-to)325-332
Number of pages8
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number3-4
StatePublished - 3 Apr 1997


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