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

  • Author(s): 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
  • Gomez Cadenas JJ
  • 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
  • et al.

Published Web Location

https://doi.org/10.1103/physrevlett.63.2173Creative Commons 'BY' version 4.0 license
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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