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Initial measurements of Z-boson resonance parameters in e+e- annihilation

Abrams, G. S. and Adolphsen, C. E. and Aleksan, R. and Alexander, J. P. and Allen, M. A. and Atwood, W. B. and Averill, D. and Ballam, J. and Bambade, P. and Barish, B. C. and Barklow, T. and Barnett, B. A. and Bartelt, J. and Bethke, S. and Blockus, D. and de Boer, W. and Bonvicini, G. and Boyarski, A. and Brabson, B. and Breakstone, A. and Breidenbach, M. and Brom, J. M. and Brown, J. L. and Brown, K. L. and Bulos, F. and Burchat, P. R. and Burke, D. L. and Cence, R. J. and Chapman, J. and Chmeissani, M. and Clendenin, J. and Cords, D. and Coupal, D. P. and Dauncey, P. and Dean, N. R. and DeStaebler, H. C. and Dorfan, D. E. and Dorfan, J. M. and Drell, P. S. and Drewer, D. C. and Dydak, F. and Ecklund, S. and Elia, R. and Erickson, R. A. and Fay, J. and Feldman, G. J. and Fernandes, D. and Field, R. C. and Fieguth, T. H. and Fischer, G. E. and Ford, W. T. and Fordham, C. and Frey, R. and Fujino, D. and Gan, K. K. and Gatto, C. 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 Herrup, D. and Heusch, C. A. and Hildreth, M. D. and Himel, T. and Hinshaw, D. A. and Holmgren, S. O. and Hong, S. J. and Hutchinson, D. and Hutton, A. and Hylen, J. and Innes, W. R. and Jacobsen, R. G. and Jaffre, M. and Jaros, J. A. and Jobe, R. K. and Jung, C. K. and Kadyk, J. A. and Karlen, D. 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 Kulikov, A. V. and Labarga, L. and Lankford, A. J. and Larsen, R. R. and Le Diberder, F. and Levi, M. E. and Litke, A. M. and Lohse, T. and Lüth, V. and Lynch, G. R. 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, J. J. and Murray, W. N. and Nash, J. and Ogren, H. and Ong, R. A. and O'Shaughnessy, K. F. and Parker, S. I. and Peck, C. and Perl, M. L. and Perrier, F. and Petersen, A. and Petradza, M. and Phinney, N. and Pitthan, R. and Porter, F. C. and Rankin, P. and Rees, J. R. and Richman, J. D. and Riles, K. and Rivkin, L. and Ross, M. C. and Rouse, F. R. and Rust, D. R. and Sadrozinski, H. F. W. and Schaad, M. W. and Schalk, T. L. and Schumm, B. A. and Schwarz, A. S. and Seeman, J. T. and Seiden, A. and Sheppard, J. C. and Smith, J. G. and Snyder, A. and Soderstrom, E. and Stiening, R. and Stoker, D. P. and Stroynowski, R. and Swartz, M. and Thun, R. and Toge, N. 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 White, S. L. and Wicklund, E. and Wolf, R. C. and Wood, D. R. and Woods, M. and Wormser, G. and Wright, R. and Wu, D. Y. and Yurko, M. and Zaccardelli, C. and von Zanthier, C. and Weinstein, A. J. (1989) Initial measurements of Z-boson resonance parameters in e+e- annihilation. Physical Review Letters, 63 (7). pp. 724-727. ISSN 0031-9007. doi:10.1103/PhysRevLett.63.724.

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We have measured the mass of the Z boson to be 91.11±0.23 GeV/c^2, and its width to be 1.61-0.43+0.60 GeV. If we constrain the visible width to its standard-model value, we find the partial width to invisible decay modes to be 0.62±0.23 GeV, corresponding to 3.8±1.4 neutrino species.

Item Type:Article
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Porter, F. C.0000-0003-1948-8889
Weinstein, A. J.0000-0002-0928-6784
Additional Information:© 1989 American Physical Society. Received 24 July 1989. We express our profound appreciation to the SLAC staff for the dedicated and monumental effort of bringing the technology of linear e + e - colliders to fruition. We also thank Robert Cahn, Bryan Lynn, and Michael Peskin for assistance with the interpretation of the measurements. This work was supported in part by the Department of Energy Contracts No. DE-AC03-81 ER40050 (California Institute of Technology), No. DE-AM03-76SFOOOI0 (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 (LBO, No. DE-AC02-76EROll12 (University of Michigan), and No. DE-AC03-76SF-00515 (SLAC), and by the National Science Foundation (Johns Hopkins University).
Funding AgencyGrant Number
Department of Energy (DOE)DE-AC03-81 ER40050
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-AC03-76SF-00515
Issue or Number:7
Record Number:CaltechAUTHORS:ABRprl89a
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:13150
Deposited By: Tony Diaz
Deposited On:29 Jan 2009 23:08
Last Modified:02 Mar 2023 19:30

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