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, S. 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

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Abstract

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
Volume27
Issue number3
DOIs
StatePublished - 1983

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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    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. https://doi.org/10.1103/PhysRevD.27.475