Upper limit on flavor-changing neutral-current decays of the b quark

P. Avery, C. Bebek, K. Berkelman, D. G. Cassel, J. W. Dewire, R. Ehrlich, T. Ferguson, R. Galik, M. G.D. Gilchriese, B. Gittelman, M. Halling, D. L. Hartill, S. Holzner, M. Ito, J. Kandaswamy, D. L. Kreinick, Y. Kubota, N. B. Mistry, F. Morrow, E. NordbergM. Ogg, A. Silverman, P. C. Stein, S. Stone, D. Weber, R. Wilcke, A. J. Sadoff, R. Giles, J. Hassard, M. Hempstead, K. Kinoshita, W. W. MacKay, F. M. Pipkin, Richard Wilson, P. Haas, T. Jensen, H. Kagan, R. Kass, S. Behrends, K. Chadwick, J. Chauveau, T. Gentile, Jan M. Guida, Joan A. Guida, A. C. Melissinos, S. L. Olsen, G. Parkhurst, D. Peterson, R. Poling, C. Rosenfeld, E. H. Thorndike, P. Tipton, D. Besson, J. Green, R. G. Hicks, R. Namjoshi, F. Sannes, P. Skubic, A. Snyder, R. Stone, A. Chen, M. Goldberg, M. E. Hejazifar, N. Horwitz, A. Jawahery, P. Lipari, G. C. Moneti, C. G. Trahern, H. Van Hecke, M. S. Alam, S. E. Csorna, L. Garren, M. D. Mestayer, R. S. Panvini, Xia Yi

Research output: Contribution to journalArticle

48 Scopus citations


We have searched for flavor-changing neutral-current weak decays of the b quark and find RB(bl+l-X)<0.31% at 90% confidence level. This limit excludes models with the b quark in a left-handed isosinglet. We also place limits on the ratio of the B and B0 semileptonic branching fractions and on B0B0 mixing.

Original languageEnglish (US)
Pages (from-to)1309-1313
Number of pages5
JournalPhysical Review Letters
Issue number14
StatePublished - 1984

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Avery, P., Bebek, C., Berkelman, K., Cassel, D. G., Dewire, J. W., Ehrlich, R., Ferguson, T., Galik, R., Gilchriese, M. G. D., Gittelman, B., Halling, M., Hartill, D. L., Holzner, S., Ito, M., Kandaswamy, J., Kreinick, D. L., Kubota, Y., Mistry, N. B., Morrow, F., ... Yi, X. (1984). Upper limit on flavor-changing neutral-current decays of the b quark. Physical Review Letters, 53(14), 1309-1313. https://doi.org/10.1103/PhysRevLett.53.1309