Chronology of Milestone Events in Particle Physics - ARNISON 1984G
Chronology of Milestone Events in Particle Physics

ARNISON 1984G

UA1 collaboration; Arnison, G. et al.
Observation of Muonic Zo Decay at the p Collider
Phys. Lett. 147B (1984) 241;

Abstracts
We report the observation of five muonic Zo decays. The mass and cross section times branching ratio is consistent with the previous measurements of Zo + . Three of the muonic decays have unexpected features. One event is of the type Zo + . Two of the Zo + decays are accompanied by several (>4) energetic (ET > 10 GeV) jets which are difficult to explain within the framework of standard QCD corrections.

Accelerator CERN-PBAR/P Detectors UA1

Related references
See also
UA1 Coll., G. Arnison et al., Phys. Lett. 132B (1983) 214;
UA1 Coll., G. Arnison et al., Phys. Lett. 126B (1983) 398;
UA1 Coll., G. Arnison et al., Phys. Lett. 139B (1984) 115;
UA1 Coll., G. Arnison et al., Phys. Lett. 135B (1984) 250;
UA1 Coll., G. Arnison et al., Phys. Lett. 134B (1984) 469;
A. Salam, Elementary Particle Theory, ed. N. Svartholm, Stockholm: Almqvist and Wiksell (1968) 367;
M. Calvetti et al., Nucl. Instr. and Meth. 176 (1980) 255;
B. Humpert, Phys. Lett. 85B (1979) 293;
S. L. Glashow, Nucl. Phys. 22 (1961) 579;
S. Weinberg, Phys. Rev. Lett. 19 (1967) 1264;
M. Barranco Luque et al., Nucl. Instr. and Meth. 176 (1980) 175;

Reactions
  p + X 540 GeV (Ecm) mass, pt
  p + X 540 GeV (Ecm) mass, pt
  p Zo X 540 GeV (Ecm) cs
  p Zo mult [jet] 540 GeV (Ecm) cs
  Zo +
  Zo +

Particles studied
  Zo mass, pw

Record comments
Confirmation of Zo boson production. Observation of Zo + decay.
    
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