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Measurements of Z-boson resonance parameters in e+e- annihilation

Abrams, G. S. and Adolphsen, C. E. and Averill, D. and Ballam, J. and Barish, B. C. and Barklow, T. and Barnett, B. A. and Bartelt, J. and Bethke, S. and Blockus, D. and Bonvicini, G. and Boyarski, A. and Brabson, B. and Breakstone, A. and Brom, J. M. and Bulos, F. and Burchat, P. R. and Burke, D. L. and Cence, R. J. and Chapman, J. and Chmeissani, M. and Cords, D. and Coupal, D. P. and Dauncey, P. and DeStaebler, H. C. and Dorfan, D. E. and Dorfan, J. M. and Drewer, D. C. and Elia, R. and Feldman, G. J. and Fernandes, D. and Field, R. C. and Ford, W. T. and Fordham, C. and Frey, R. and Fujino, D. and Gan, K. K. and Gero, E. and Gidal, G. and Glanzman, T. and Goldhaber, G. and Gomez Cadenas, J. J. and Gratta, G. and Grindhammer, G. and Grosse-Wiesmann, P. and Hanson, G. and Harr, R. and Harral, B. and Harris, F. A. and Hawkes, C. M. and Hayes, K. and Hearty, C. and Heusch, C. A. and Hildreth, M. D. and Himel, T. and Hinshaw, D. A. and Hong, S. J. and Hutchinson, D. and Hylen, J. and Innes, R. and Jacobsen, R. G. and Jaros, J. A. and Jung, C. K. and Kadyk, J. A. and Kent, J. and King, M. and Klein, S. R. and Koetke, D. S. and Komamiya, S. and Koska, W. and Kowalski, L. A. and Kozanecki, W. and Kral, J. F. and Kuhlen, M. and Labarga, L. and Lankford, A. J. and Larsen, R. R. and Le Diberder, F. and Levi, M. E. and Litke, A. M. and Lou, X. C. and Lüth, V. and McKenna, J. A. and Matthews, J. A. J. and Mattison, T. and Milliken, B. D. and Moffeit, K. C. and Munger, C. T. and Murray, W. N. and Nash, J. and Ogren, H. and O'Shaughnessy, K. F. and Parker, S. I. and Peck, C. and Perl, M. L. and Perrier, F. and Petradza, M. and Pitthan, R. and Porter, F. C. and Rankin, P. and Riles, K. and Rouse, F. R. and Rust, D. R. and Sadrozinski, H. F. W. and Schaad, M. W. and Schumm, B. A. and Seiden, A. and Smith, J. G. and Snyder, A. and Soderstrom, E. and Stoker, D. P. and Stroynowski, R. and Swartz, M. and Thun, R. and Trilling, G. H. and Van Kooten, R. and Voruganti, P. and Wagner, S. R. and Watson, S. and Weber, P. and Weigend, A. and Weir, A. J. and Wicklund, E. and Woods, M. and Wu, D. Y. and Yurko, M. and Zaccardelli, C. and von Zanthier, C. and Weinstein, Alan J. (1989) Measurements of Z-boson resonance parameters in e+e- annihilation. Physical Review Letters, 63 (20). pp. 2173-2176. ISSN 0031-9007. doi:10.1103/PhysRevLett.63.2173.

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We have measured the mass of the Z boson to be 91.14±0.12 GeV/c^2, and its width to be 2.42-0.35+0.45 GeV. If we constrain the visible width to its standard-model value, we find the partial width to invisible decay modes to be 0.46±0.10 GeV, corresponding to 2.8±0.6 neutrino species, with a 95%-confidence-level upper limit of 3.9.

Item Type:Article
Related URLs:
URLURL TypeDescription
Porter, F. C.0000-0003-1948-8889
Weinstein, Alan J.0000-0002-0928-6784
Additional Information:© 1989 The American Physical Society. Received 12 October 1989. This work was supported in part by Department of Energy Contracts No. DE-AC03-81ER40050 (California Institute of Technology), No. DE-AM03-76SF00010 (University of California, Santa Cruz), No. DE-AC02-86ER40253 (University of Colorado), No. DE-AC03-83ER40103 (University of Hawaii), No. DE-AC02-84ER40125 (Indiana University), No. DE-AC03-76SF00098 (LBL), No. DE-AC02-76ER01112 (University of Michigan), and No. DE-AC03-76SF00515 (SLAC), and by the National Science Foundation (Johns Hopkins University).
Funding AgencyGrant Number
Department of Energy (DOE)DE-AC03-81ER40050
Department of Energy (DOE)DE-AM03-76SF00010
Department of Energy (DOE)DE-AC02-86ER40253
Department of Energy (DOE)DE-AC03-83ER40103
Department of Energy (DOE)DE-AC02-84ER40125
Department of Energy (DOE)DE-AC03-76SF00098
Department of Energy (DOE)DE-AC02-76ER01112
Department of Energy (DOE)DE-AC03-76SF00515
Issue or Number:20
Record Number:CaltechAUTHORS:ABRprl89c
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:13219
Deposited By: Tony Diaz
Deposited On:03 Feb 2009 17:21
Last Modified:02 Mar 2023 19:32

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