(bul)/(bcl) from the end point of the lepton momentum spectrum in semileptonic B decay

S. Behrends, Jan M. Guida, Joan A. Guida, F. Morrow, R. Poling, E. H. Thorndike, P. Tipton, M. S. Alam, N. Katayama, I. J. Kim, W. C. Li, X. C. Lou, C. R. Sun, V. Tanikella, D. Bortoletto, A. Chen, M. Goldberg, R. Holmes, N. Horwitz, A. JawaheryP. Lubrano, G. C. Moneti, V. Sharma, I. P J Shipsey, P. Thoma, S. E. Csorna, M. D. Mestayer, R. S. Panvini, G. B. Word, A. Bean, G. J. Bobbink, I. C. Brock, A. Engler, T. Ferguson, R. W. Kraemer, C. Rippich, H. Vogel, C. Bebek, K. Berkelman, E. Blucher, D. G. Cassel, T. Copie, R. Desalvo, J. W. Dewire, R. Ehrlich, R. S. Galik, M. G D Gilchriese, B. Gittelman, S. W. Gray, A. M. Halling, D. L. Hartill, B. K. Heltsley, S. Holzner, J. Kandaswamy, R. Kowalewski, D. L. Kreinick, Y. Kubota, N. B. Mistry, J. Mueller, R. Namjoshi, E. Nordberg, D. Perticone, D. Peterson, M. Pisharody, K. Read, D. Riley, A. Silverman, Sheldon Stone, A. J. Sadoff, P. Avery, D. Besson, L. Garren, T. Bowcock, K. Kinoshita, F. M. Pipkin, M. Procario, Richard Wilson, J. Wolinski, D. Xiao, P. Haas, M. Hempstead, T. Jensen, H. Kagan, R. Kass

Research output: Contribution to journalArticle

66 Scopus citations


We have used the measured yield of leptons near the end point of the momentum spectrum from semileptonic B decay to obtain an upper limit on (bul)/(bcl) and a corresponding limit on Vub/Vcb.

Original languageEnglish (US)
Pages (from-to)407-410
Number of pages4
JournalPhysical Review Letters
Issue number4
StatePublished - 1987


ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Behrends, S., Guida, J. M., Guida, J. A., Morrow, F., Poling, R., Thorndike, E. H., Tipton, P., Alam, M. S., Katayama, N., Kim, I. J., Li, W. C., Lou, X. C., Sun, C. R., Tanikella, V., Bortoletto, D., Chen, A., Goldberg, M., Holmes, R., Horwitz, N., ... Kass, R. (1987). (bul)/(bcl) from the end point of the lepton momentum spectrum in semileptonic B decay. Physical Review Letters, 59(4), 407-410. https://doi.org/10.1103/PhysRevLett.59.407