A search for flavour-changing neutral currents in b decay at petra

W. Bartel, L. Becker, C. K. Bowdery, D. Cords, R. Eichler, R. Felst, D. Haidt, H. Krehbiel, B. Naroska, J. Olsson, P. Steffen, P. Warming, G. Dietrich, E. Elsen, G. Heinzelmann, H. Kado, K. Meier, A. Petersen, U. Schneekloth, G. WeberS. Bethke, A. Dieckmann, J. Heintze, K. H. Hellenbrand, R. D. Heuer, S. Komamiya, J. von Krogh, P. Lennert, H. Matsumura, H. Rieseberg, A. Wagner, A. Bell, A. Finch, F. Foster, G. Hughes, T. Nozaki, H. Wriedt, J. Allison, A. H. Ball, G. J. Bamford, R. J. Barlow, I. P. Duerdoth, I. Glendinning, F. K. Loebinger, A. A. Macbeth, H. McCann, H. E. Mills, P. G. Murphy, P. G. Rowe, K. Stephens, D. Clarke, R. Marshall, G. F. Pearce, J. B. Whittaker, J. Kanzaki, T. Kawamoto, T. Kobayashi, M. Koshiba, M. Minowa, M. Nozaki, S. Odaka, S. Orito, A. Sato, H. Takeda, T. Takeshita, Y. Totsuka, S. Yamada

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Abstract

A study of the reaction e+e- → μ+μ-+ anything at a mean centre of mass energy of ≈35 GeV has been carried out to investigate the possible flavour-changing neutral current decay of the b quark. An upper limit of 0.7% at 95% CL has been placed on the branching ratio for this process. This limit conflicts with the predictions of a five-quark model (without top) which assigns the b quark to left- and right-handed singlets.

Original languageEnglish
Pages (from-to)241-245
Number of pages5
JournalPhysics Letters B
Volume132
Issue number1-3
DOIs
Publication statusPublished - 1983 Nov 24
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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  • Cite this

    Bartel, W., Becker, L., Bowdery, C. K., Cords, D., Eichler, R., Felst, R., Haidt, D., Krehbiel, H., Naroska, B., Olsson, J., Steffen, P., Warming, P., Dietrich, G., Elsen, E., Heinzelmann, G., Kado, H., Meier, K., Petersen, A., Schneekloth, U., ... Yamada, S. (1983). A search for flavour-changing neutral currents in b decay at petra. Physics Letters B, 132(1-3), 241-245. https://doi.org/10.1016/0370-2693(83)90258-7