Observation of exclusive B decays to final states containing a charmed baryon

X. Fu, B. Nemati, S. J. Richichi, W. R. Ross, P. Skubic, M. Wood, M. Bishai, J. Fast, E. Gerndt, J. W. Hinson, T. Miao, D. H. Miller, M. Modesitt, E. I. Shibata, I. P.J. Shipsey, P. N. Wang, L. Gibbons, S. D. Johnson, Y. Kwon, S. RobertsE. H. Thorndike, C. P. Jessop, K. Lingel, H. Marsiske, M. L. Perl, S. F. Schaffner, R. Wang, T. E. Coan, J. Dominick, V. Fadeyev, I. Korolkov, M. Lambrecht, S. Sanghera, V. Shelkov, R. Stroynowski, I. Volobouev, G. Wei, M. Artuso, A. Efimov, M. Gao, M. Goldberg, D. He, N. Horwitz, S. Kopp, G. C. Moneti, R. Mountain, Y. Mukhin, S. Playfer, Y. Kubota, R. Poling, CLEO Collaboration

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Abstract

Using data collected in the region of the Y(4S) resonance with the CLEO-II detector, we report on the first observation of exclusive decays of the B meson to final states with a charmed baryon. We have measured the branching fractions ℬ(B → Λ+c p¯π) = (0.62+0.23−0.20 ± 0.11 ± 0.10) × 10−3 and ℬ(B−0 → Λ+cp¯π) = (1.33+0.46−0.42 ± 0.31 ± 0.21) × 10−3, where the first error is statistical, the second is systematic, and the third is due to uncertainty in the Λ+c branching fractions. In addition, we report upper limits for final states of the form B¯ → Λ+c p¯(n π) and Λ+c p¯(n π)π0, where (n π) denotes up to four charged pions.

Original languageEnglish (US)
Pages (from-to)3125-3129
Number of pages5
JournalPhysical review letters
Volume79
Issue number17
DOIs
StatePublished - 1997

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    Fu, X., Nemati, B., Richichi, S. J., Ross, W. R., Skubic, P., Wood, M., Bishai, M., Fast, J., Gerndt, E., Hinson, J. W., Miao, T., Miller, D. H., Modesitt, M., Shibata, E. I., Shipsey, I. P. J., Wang, P. N., Gibbons, L., Johnson, S. D., Kwon, Y., ... CLEO Collaboration (1997). Observation of exclusive B decays to final states containing a charmed baryon. Physical review letters, 79(17), 3125-3129. https://doi.org/10.1103/PhysRevLett.79.3125