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Measurements of Z-boson resonance parameters in e+e- annihilation
- Abrams, GS;
- Adolphsen, CE;
- Averill, D;
- Ballam, J;
- Barish, BC;
- Barklow, T;
- Barnett, BA;
- Bartelt, J;
- Bethke, S;
- Blockus, D;
- Bonvicini, G;
- Boyarski, A;
- Brabson, B;
- Breakstone, A;
- Brom, JM;
- Bulos, F;
- Burchat, PR;
- Burke, DL;
- Cence, RJ;
- Chapman, J;
- Chmeissani, M;
- Cords, D;
- Coupal, DP;
- Dauncey, P;
- DeStaebler, HC;
- Dorfan, DE;
- Dorfan, JM;
- Drewer, DC;
- Elia, R;
- Feldman, GJ;
- Fernandes, D;
- Field, RC;
- Ford, WT;
- Fordham, C;
- Frey, R;
- Fujino, D;
- Gan, KK;
- Gero, E;
- Gidal, G;
- Glanzman, T;
- Goldhaber, G;
- Cadenas, JJ Gomez;
- Gratta, G;
- Grindhammer, G;
- Grosse-Wiesmann, P;
- Hanson, G;
- Harr, R;
- Harral, B;
- Harris, FA;
- Hawkes, CM;
- Hayes, K;
- Hearty, C;
- Heusch, CA;
- Hildreth, MD;
- Himel, T;
- Hinshaw, DA;
- Hong, SJ;
- Hutchinson, D;
- Hylen, J;
- Innes, WR;
- Jacobsen, RG;
- Jaros, JA;
- Jung, CK;
- Kadyk, JA;
- Kent, J;
- King, M;
- Klein, SR;
- Koetke, DS;
- Komamiya, S;
- Koska, W;
- Kowalski, LA;
- Kozanecki, W;
- Kral, JF;
- Kuhlen, M;
- Labarga, L;
- Lankford, AJ;
- Larsen, RR;
- Le Diberder, F;
- Levi, ME;
- Litke, AM;
- Lou, XC;
- Lüth, V;
- McKenna, JA;
- Matthews, JAJ;
- Mattison, T;
- Milliken, BD;
- Moffeit, KC;
- Munger, CT;
- Murray, WN;
- Nash, J;
- Ogren, H;
- O’Shaughnessy, KF;
- Parker, SI;
- Peck, C;
- Perl, ML;
- Perrier, F;
- Petradza, M;
- Pitthan, R;
- Porter, FC;
- Rankin, P;
- Riles, K;
- Rouse, FR;
- Rust, DR;
- Sadrozinski, HFW;
- Schaad, MW;
- Schumm, BA;
- Seiden, A;
- Smith, JG;
- Snyder, A;
- Soderstrom, E;
- Stoker, DP;
- Stroynowski, R;
- Swartz, M;
- Thun, R;
- Trilling, GH;
- Van Kooten, R;
- Voruganti, P;
- Wagner, SR;
- Watson, S;
- Weber, P;
- Weigend, A;
- Weinstein, AJ;
- Weir, AJ;
- Wicklund, E;
- Woods, M;
- Wu, DY;
- Yurko, M;
- Zaccardelli, C;
- von Zanthier, C
- et al.
Abstract
We have measured the mass of the Z boson to be 91.14±0.12 GeV/c2, 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. © 1989 The American Physical Society.
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