Search for long-lived massive neutrinos in Z decays

C. K. Jung, R. Van Kooten, G. S. Abrams, C. E. Adolphsen, D. Averill, J. Ballam, B. C. Barish, T. Barklow, B. A. Barnett, J. Bartelt, S. Bethke, D. Blockus, G. Bonvicini, A. Boyarski, B. Brabson, A. Breakstone, F. Bulos, P. R. Burchat, D. L. Burke, R. J. CenceJ. Chapman, M. Chmeissani, D. Cords, D. P. Coupal, P. Dauncey, H. C. Destaebler, D. E. Dorfan, J. M. Dorfan, D. C. Drewer, R. Elia, G. J. Feldman, D. Fernandes, R. C. Field, W. T. Ford, C. Fordham, R. Frey, D. Fujino, K. K. Gan, C. Gatto, E. Gero, G. Gidal, T. Glanzman, G. Goldhaber, J. J. Gomez Cadenas, G. Gratta, G. Grindhammer, P. Grosse-Wiesmann, G. Hanson, R. Harr, B. Harral, F. A. Harris, C. M. Hawkes, K. Hayes, C. Hearty, C. A. Heusch, M. D. Hildreth, T. Himel, D. A. Hinshaw, S. J. Hong, D. Hutchinson, J. Hylen, W. R. Innes, R. G. Jacobsen, J. A. Jaros, J. A. Kadyk, J. Kent, M. King, S. R. Klein, D. S. Koetke, S. Komamiya, W. Koska, L. A. Kowalski, W. Kozanecki, J. F. Kral, M. Kuhlen, L. Labarga, A. J. Lankford, R. R. Larsen, F. Le Diberder, M. E. Levi, A. M. Litke, X. C. Lou, V. Lüth, J. A. McKenna, J. A.J. Matthews, T. Mattison, B. D. Milliken, K. C. Moffeit, C. T. Munger, W. N. Murray, J. Nash, H. Ogren, K. F. Oashaughnessy, S. I. Parker, C. Peck, M. L. Perl, F. Perrier, M. Petradza, R. Pitthan, F. C. Porter, P. Rankin, K. Riles, F. R. Rouse, D. R. Rust, H. F.W. Sadrozinski, M. W. Schaad, B. A. Schumm, A. Seiden, J. G. Smith, A. Snyder, E. Soderstrom, D. P. Stoker, R. Stroynowski, M. Swartz, R. Thun, G. H. Trilling, P. Voruganti, S. R. Wagner, S. Watson, P. Weber, A. Weigend, A. J. Weinstein, A. J. Weir, E. Wicklund, M. Woods, D. Y. Wu, M. Yurko, C. Zaccardelli, C. Von Zanthier

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Abstract

We search for events in the Mark II detector at SLAC Linear Collider with the topology of a Z boson decaying into a pair of long-lived massive particles. No events that are consistent with the search hypothesis are found. Interpreting the long-lived particle as a sequential Dirac neutrino 4 of the fourth generation, we exclude at the 95% confidence level a significant range of mixing-matrix elements of 4 to other-generation neutrinos for a 4 mass from 10 to 43 GeV/c2.

Original languageEnglish
Pages (from-to)1091-1094
Number of pages4
JournalPhysical Review Letters
Volume64
Issue number10
DOIs
Publication statusPublished - 1990 Jan 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Jung, C. K., Van Kooten, R., Abrams, G. S., Adolphsen, C. E., Averill, D., Ballam, J., Barish, B. C., Barklow, T., Barnett, B. A., Bartelt, J., Bethke, S., Blockus, D., Bonvicini, G., Boyarski, A., Brabson, B., Breakstone, A., Bulos, F., Burchat, P. R., Burke, D. L., ... Von Zanthier, C. (1990). Search for long-lived massive neutrinos in Z decays. Physical Review Letters, 64(10), 1091-1094. https://doi.org/10.1103/PhysRevLett.64.1091