Chronology of Milestone Events in Particle Physics - ARNISON 1983D
Chronology of Milestone Events in Particle Physics

  Nobel prize to C. Rubbia awarded in 1984. Co-winner S. van der Meer "for decisive contribution to the large project, which led to the discovery of the field particles W and Zo, communicators of weak interactions''  

ARNISON 1983D

UA1 collaboration; Arnison, G. et al.
Experimental Observation of Lepton Pairs of Invariant Mass Around 95 GeV at the CERN SPS Collider
Phys. Lett. 126B (1983) 398;

Reprinted in
1st Asia-Pacific Physics Conf., V.1 Singapore (1983) 101.
Lepton and Photon Inter. at High Energies, Ithaca (1983) 27.
Fifty Years of Weak-Interaction Phys., Bologna (1984) 779.

Abstracts
We report the observation of four electron-positron pairs and one muon pair which have the signature of a two-body decay of a particle of mass ~ 95 GeV/c2. These events fit well the hypothesis that they are produced by the process p Zo X (with Zo e+ e), where Zo is the Intermediate Vector Boson postulated by the electroweak theories as the mediator of weak neutral currents.

Accelerator CERN-PBAR/P Detectors UA1

Related references
See also
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Reactions
  p Zo X 540. GeV (Ecm)
  Zo e e+
  Zo +

Particles studied
  Zo ex, mass

Record comments
First evidence for the neutral intermediate boson Zo.
    
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