Chronology of Milestone Events in Particle Physics - AVERY 1989C
Chronology of Milestone Events in Particle Physics

AVERY 1989C

CLEO collaboration; Avery, P. et al.
Observation of the Charmed Strange Baryon c(2460)o
Phys. Rev. Lett. 62 (1989) 863;

Abstracts
We present evidence from the CLEO detector for the charmed strange baryon c0. It is seen in nonresonant e+ e annihilations at of 10.5 GeV through its decay to +. The measured c0 mass is 2471 3 4 MeV/c2.

Accelerator CESR Detectors CLEO

Related references
See also
S. F. Biagi et al., Phys. Lett. 122B (1983) 455;
S. F. Biagi et al., Phys. Lett. 150B (1985) 230;
S. F. Biagi et al., Z. Phys. C28 (1985) 175;
P. Cotes et al., Phys. Rev. Lett. 59 (1987) 1530;
Particle Data Group, Review of Particle Properties, G. P. Yost et al., Phys. Lett. 204B (1988) 1;
C. Bebek et al., Phys. Rev. D36 (1987) 690;
S. Behrends et al., Phys. Rev. D31 (1985) 2161;
D. Cassel et al., Nucl. Instr. and Meth. A252 (1986) 325;
W. Kwong, J. L. Rosner, and C. Quigg, Ann. Rev. Nucl. Part. Sci. 37 (1987) 325;
D. Andrews et al., Nucl. Instr. and Meth. 47 (1983) 211;

Experiment comments
The sample consists of 101 pb-1 of integrated luminosity at energies just below (4S) resonances, 212 pb-1 at the (4S) and 117 pb-1 at the (5S).

Reactions
  e+ e p + 2 X 10.5 GeV (Ecm) mass
  e+ e 2+ X 10.5 GeV (Ecm) mass
  e+ e + X 10.5 GeV (Ecm) mass
  e+ e + X 10.5 GeV (Ecm) mass
  e+ e + X 10.5 GeV (Ecm) mass
  e+ e + X 10.5 GeV (Ecm) mass
  e+ e XI/C0! X 10.5 GeV (Ecm)
  e+ e XI/CBAR0! X 10.5 GeV (Ecm)
  p
 
  +
  XI/C0! +
  XI/CBAR0! +
  + +

Particles studied
  XI/C0 mass
  XI/CBAR0 mass

Record comments
First evidence for the c(2460)o and c(2460)o.
    
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