Improved measurement of |Vub| with inclusive semileptonic B decays

A. Bornheim, E. Lipeles, S. P. Pappas, A. Shapiro, W. M. Sun, A. J. Weinstein, G. Masek, H. P. Paar, R. Mahapatra, R. J. Morrison, R. A. Briere, G. P. Chen, T. Ferguson, G. Tatishvili, H. Vogel, N. E. Adam, J. P. Alexander, C. Bebek, K. Berkelman, F. BlancV. Boisvert, D. G. Cassel, P. S. Drell, J. E. Duboscq, K. M. Ecklund, R. Ehrlich, L. Gibbons, B. Gittelman, S. W. Gray, D. L. Hartill, B. K. Heltsley, L. Hsu, C. D. Jones, J. Kandaswamy, D. L. Kreinick, A. Magerkurth, H. Mahlke-Krüger, T. O. Meyer, N. B. Mistry, E. Nordberg, M. Palmer, J. R. Patterson, D. Peterson, J. Pivarski, D. Riley, A. J. Sadoff, H. Schwarthoff, M. R. Shepherd, J. G. Thayer, D. Urner

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94 Scopus citations


The measurement of the Cabibbo-Kobayashi-Maskawa (CKM) parameter made with a sample of 9.7 × 106 BB̄ events collected with the CLEO II detector was discussed. The heavy quark theory was used to combine the observed yield of leptons from semileptonic B decay in the end point interval 2.2-2.6 GeV/c with the CLEO II data on B→ Xsγ. The results showed the measured CKM parameter to be (4.08 ± 0.63) × 10-3.

Original languageEnglish (US)
Article number231803
Pages (from-to)2318031-2318035
Number of pages5
JournalPhysical review letters
Issue number23
StatePublished - Jun 10 2002


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