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B0B0 mixing at the (4S)

  • M. Artuso
  • , C. Bebek
  • , K. Berkelman
  • , E. Blucher
  • , J. Byrd
  • , D. G. Cassel
  • , E. Cheu
  • , D. M. Coffman
  • , T. Copie
  • , G. Crawford
  • , R. Desalvo
  • , J. W. Dewire
  • , P. S. Drell
  • , R. Ehrlich
  • , R. S. Galik
  • , B. Gittelman
  • , S. W. Gray
  • , A. M. Halling
  • , D. L. Hartill
  • , B. K. Heltsley
  • J. Kandaswamy, R. Kowalewski, D. L. Kreinick, Y. Kubota, J. D. Lewis, N. B. Mistry, J. Mueller, R. Namjoshi, S. Nandi, E. Nordberg, C. Ogrady, D. Peterson, M. Pisharody, D. Riley, M. Sapper, A. Silverman, S. Stone, H. Worden, M. Worris, A. J. Sadoff, P. Avery, D. Besson, L. Garren, J. Yelton, T. Bowcock, K. Kinoshita, F. M. Pipkin, M. Procario, Richard Wilson, J. Wolinski, D. Xiao, P. Baringer, P. Haas, Ha Lam, A. Jawahery, C. H. Park, D. Perticone, R. Poling, R. Fulton, M. Hempstead, T. Jensen, D. R. Johnson, H. Kagan, R. Kass, F. Morrow, J. Whitmore, W. Y. Chen, R. L. McIlwain, D. H. Miller, C. R. Ng, E. I. Shibata, W. M. Yao, E. H. Thorndike, M. S. Alam, N. Katayama, I. J. Kim, W. C. Li, X. C. Lou, C. R. Sun, D. Bortoletto, M. Goldberg, N. Horwitz, P. Lubrano, M. D. Mestayer, G. C. Moneti, V. Sharma, I. P.J. Shipsey, T. Skwarnicki, S. E. Csorna, T. Letson, I. C. Brock, T. Ferguson
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Research output: Contribution to journalArticlepeer-review

130 Scopus citations

Abstract

We have measured B0B0 mixing by observing like-sign dilepton events in (4S) decay. Assuming that the semileptonic branching fractions of the charged and neutral B mesons are equal and that the (4S) decays to B+B- 55% of the time and to B0B0 45% of the time, we measure the mixing parameter r to be 0.190.060.06, where the first error is statistical and the second is systematic.

Original languageEnglish
Pages (from-to)2233-2236
Number of pages4
JournalPhysical Review Letters
Volume62
Issue number19
DOIs
StatePublished - 1989
Externally publishedYes

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