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

*Corresponding author for this work

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9 Scopus citations

Abstract

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
Volume397
Issue number3-4
DOIs
StatePublished - 3 Apr 1997

Funding

FundersFunder number
Conselho National de Desenvolvimento Cientmco e Technologico
Israeli Academy of Sciences and Humanities
US De-partmento f Energy
US National Science Foundation
US-Israel Binational Science Foundation
United States Departmento f Energy
Universities ResearchA s-sociation, Inc.
Consejo Nacional de Ciencia y Tecnología

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