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

STEINBERGER 1950

Steinberger, J.; Panofsky, W.K.H.; Steller, J.;
Evidence for the Production of Neutral Mesons by Photons
Phys. Rev. 78 (1950) 802;

Reprinted in
(translation into Russian) Usp. Fiz. Nauk 42 (1950) 313.
R. N. Cahn and G. Goldhaber, The Experimental Foundations of Particle Physics, Cambridge Univ. Press (1991) 45.
The Physical Review - the First Hundred Years, AIP Press (1995) 820.

Abstracts
In the bombardment of nuclei by 330 MeV X-rays, multiple gamma-rays are emitted. From their angular correlation it is deduced that they are emitted in pairs in the disintegration of neutral particles moving with relativistic velocities and therefore of intermediate mass. The neutral mesons are produced with cross sections similar to those for the charged mesons and with an angular distribution peaked more in in the forward direction. The production cross section in hydrogen and the production cross section per nucleon in C and Be are comparable.

Accelerator LBL-CYC-184IN Detectors CNTR

Related references
See also
C. N. Yang, Phys. Rev. 77 (1950) 242;
R. J. Finkelstein, Phys. Rev. 72 (1947) 414;
H. Fukuda and Y. Miamoto, Progr. of Theor. Phys. 4 (1949) 347;
Ozaki, Oneda, and Sasaki, Progr. of Theor. Phys. 4 (1949) 524;
J. Steinberger, Phys. Rev. 76 (1949) 1180;
E. M. McMillan, Peterson, and White, Science 110 (1949) 579;
J. R. Oppenheimer, Phys. Rev. 71 (1947) 462;
W. B. Fretter, Phys. Rev. 75 (1949) 41;
W. B. Fretter, Phys. Rev. 76 (1949) 511;
J. Steinberger and A. S. Bishop, Phys. Rev. 78 (1950) 493;
Analyse data from
R. Bjorklund et al., Phys. Rev. 77 (1950) 213;

Reactions
  p p mult[] 175-330 MeV (Plab) ang, cs, a-dep
  Be Be mult[] 175-330 MeV (Plab) ang, cs, a-dep
  C C mult[] 175-330 MeV (Plab) ang, cs, a-dep
  mesono 2
  o 2

Particles studied
  o mass, qn

Record comments
First evidence for the production of the o and for o decay.
    
  New Comments List of Comments

mark357177@hotmail.com NY