Semileptonic decays of B mesons

K. Chadwick, J. Chauveau, P. Ganci, T. Gentile, Joan A. Guida, R. Kass, A. C. Melissinos, S. L. Olsen, R. Poling, C. Rosenfeld, G. Rucinski, E. H. Thorndike, J. Green, J. J. Mueller, F. Sannes, P. Skubic, A. Snyder, R. Stone, A. Brody, A. ChenM. Goldberg, N. Horwitz, H. Kooy, G. C. Moneti, P. Pistilli, M. S. Alam, S. E. Csorna, A. Fridman, R. Hicks, R. S. Panvini, D. Andrews, P. Avery, R. Cabenda, D. G. Cassel, J. S. Dewire, R. Ehrlich, T. Ferguson, M. G D Gilchriese, B. Gittelman, D. L. Hartill, D. Herrup, M. Herzlinger, J. Kandaswamy, D. L. Kreinick, N. B. Mistry, F. Morrow, E. Nordberg, R. Perchonok, R. Plunkett, A. Silverman, P. C. Stein, Sheldon Stone, D. Weber, R. Wilcke, C. Bebek, J. Haggerty, M. Hempstead, J. M. Izen, W. A. Loomis, W. W. MacKay, F. M. Pipkin, J. Rohlf, W. Tanenbaum, Richard Wilson, A. J. Sadoff, H. Kagan

Research output: Contribution to journalArticle

39 Scopus citations


We have studied the production of B mesons in e+e- annihilations and present new measurements of the semileptonic branching fractions for B-meson decay. We find B(B=eX)=0.127±0.017±0.013 and B(B=X)=0.122±0.017±0.031, where the errors are statistical and systematic, respectively. The observed lepton momentum spectra from B decays are presented. From these spectra we find the mean hadronic mass (MX) recoiling against the detected lepton to be MX=2.2±0.2 GeV/c2. We have also observed an enhancement in the lepton yield from the continuum above BB» threshold. This enhancement is interpreted as continuum B production and is consistent with what is expected from the naive quark model.

Original languageEnglish (US)
Pages (from-to)475-485
Number of pages11
JournalPhysical Review D
Issue number3
StatePublished - 1983
Externally publishedYes


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Chadwick, K., Chauveau, J., Ganci, P., Gentile, T., Guida, J. A., Kass, R., Melissinos, A. C., Olsen, S. L., Poling, R., Rosenfeld, C., Rucinski, G., Thorndike, E. H., Green, J., Mueller, J. J., Sannes, F., Skubic, P., Snyder, A., Stone, R., Brody, A., ... Kagan, H. (1983). Semileptonic decays of B mesons. Physical Review D, 27(3), 475-485.