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

  • Author(s): Abrams, GS;
  • Adolphsen, CE;
  • Aleksan, R;
  • Alexander, JP;
  • Allen, MA;
  • Atwood, WB;
  • Averill, D;
  • Ballam, J;
  • Bambade, P;
  • Barish, BC;
  • Barklow, T;
  • Barnett, BA;
  • Bartelt, J;
  • Bethke, S;
  • Blockus, D;
  • de Boer W;
  • Bonvicini, G;
  • Boyarski, A;
  • Brabson, B;
  • Breakstone, A;
  • Breidenbach, M;
  • Brom, JM;
  • Brown, JL;
  • Brown, KL;
  • Bulos, F;
  • Burchat, PR;
  • Burke, DL;
  • Cence, RJ;
  • Chapman, J;
  • Chmeissani, M;
  • Clendenin, J;
  • Cords, D;
  • Coupal, DP;
  • Dauncey, P;
  • Dean, NR;
  • DeStaebler, HC;
  • Dorfan, DE;
  • Dorfan, JM;
  • Drell, PS;
  • Drewer, DC;
  • Dydak, F;
  • Ecklund, S;
  • Elia, R;
  • Erickson, RA;
  • Fay, J;
  • Feldman, GJ;
  • Fernandes, D;
  • Field, RC;
  • Fieguth, TH;
  • Fischer, GE;
  • Ford, WT;
  • Fordham, C;
  • Frey, R;
  • Fujino, D;
  • Gan, KK;
  • Gatto, C;
  • Gero, E;
  • Gidal, G;
  • Glanzman, T;
  • Goldhaber, G;
  • Gomez Cadenas JJ;
  • Gratta, G;
  • Grindhammer, G;
  • Grosse-Wiesmann, P
  • et al.
Abstract

We have measured the mass of the Z boson to be 91.110.23 GeV/c2, 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 0.620.23 GeV, corresponding to 3.81.4 neutrino species. © 1989 The American Physical Society.

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