Chronology of Milestone Events in Particle Physics - SERIFF 1950
Chronology of Milestone Events in Particle Physics

SERIFF 1950

Seriff, A.J.; Leighton, R.B.; Hsiao, C.; Cowan, E.W.; Anderson, C.D.;
Cloud-Chamber Observations of the New Unstable Cosmic-Ray Particles
Phys. Rev. 78 (1950) 290;

Abstracts
Thirty-four "forked tracks'' similar to two previously reported by Rochester and Butler have been observed in 11,000 cloud-chamber photographs of cosmic-ray penetrating showers, confirming their conclusion that new unstable neutral and charged particles exist. The lifetime of the neutral particles is found to be about 3 x 10-10 sec, and some information as to the nature of the decay products is given.

Accelerator COSM Detectors CLOUD

Related references
More (earlier) information appears in
R. B. Leighton, C. D. Anderson, and A. J. Seriff, Phys. Rev. 75 (1949) 1432;
Analyse data from
G. D. Rochester and C. C. Butler, Nature 160 (1947) 855;

Reactions
  charged charged (neutrals)
  neutral charged+ charged

Particles studied
  vee ex, w
  unspec ex, w

Record comments
Further evidence for V events.
    
  New Comments List of Comments