Chronology of Milestone Events in Particle Physics - LEPRINCE-RINGUET 1944
Chronology of Milestone Events in Particle Physics

LEPRINCE-RINGUET 1944

Leprince-Ringuet, L.; Lheritier, M.;
Existence probable d'une particule de masse 990 me dans le rayonnement cosmique / On the Probable Existence of Cosmic Ray Particle with Mass 990 me
Compt. Ren. 219 (1944) 618;

Reprinted in
R. N. Cahn and G. Goldhaber, The Experimental Foundations of Particle Physics, Cambridge Univ. Press (1991) 66.

Abstracts
An estimate of mass, 990 me 12% is obtained by the method of elastic collision for a penetrating particle photographed at 1000 m altitude. Other particles in the same series of photographs show collisions consistent with the normal meson mass. (Science Abstracts, 1947, 2927. J. G. W.).

Accelerator COSM Detectors CLOUD

Related references
See also
L. Leprince-Ringuet, S. Gorodetzky, E. Nageotti, and R. Foy, Compt. Ren. 211 (1940) 382;
L. Leprince-Ringuet, S. Gorodetzky, E. Nageotti, and R. Foy, Phys. Rev. 59 (1941) 460;
R. Richard-Foy, Cahiers de Physique 2 (1942) 65, Compt. Ren. 213 (1941) 1;
S. Gorodetzky, These, Paris (1942);
L. Leprince-Ringuet, S. Gorodetzky, E. Nageotti, and R. Foy, Journal de Physique 2 (1941) 63;

Particles studied
  K+ ex, mass

Record comments
First evidence for the K+.
    
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