Chronology of Milestone Events in Particle Physics - DURBIN 1951C
Chronology of Milestone Events in Particle Physics


Durbin, R.; Loar, H.; Steinberger, J.;
The Spin of the Pion via the Reaction + deuteron p p
Phys. Rev. 83 (1951) 646;

Reprinted in
R. N. Cahn and G. Goldhaber, The Experimental Foundations of Particle Physics, Cambridge Univ. Press (1991) 49.
The Physical Review - the First Hundred Years, AIP Press (1995) 834.

It is possible to determine the spin of the pion by comparing the forward and backward rates of the reaction + deuteron p p. The backward rate has been measured in Berkeley. We have measured the forward rate. Comparison of the two results shows the spin to be zero. In the light of other recent experimental results the meson is then pseudoscalar.

Accelerator NEVI-CYC Detectors CNTR

Related references
See also
C. N. Yang, Phys. Rev. 77 (1950) 242;
K. A. Brueckner, R. Serber, and K. M. Watson, Phys. Rev. 81 (1951) 575;
Analyse data from
F. S. Crawford, K. Crowe, and M. L. Stevenson, Phys. Rev. 82 (1951) 97;
A. S. Bishop, J. Steinberger, and L. J. Cook, Phys. Rev. 80 (1950) 291;
V. Z. Peterson, Phys. Rev. 79 (1950) 407;
H. Primakoff and F. Villars, Phys. Rev. 83 (1951) 686;
W. K. H. Panofsky, R. L. Aamodt, and J. Hadley, Phys. Rev. 81 (1951) 565;
J. Steinberger, W. K. H. Panofsky, and J. Steller, Phys. Rev. 78 (1950) 802;
Cartwright, Richman, M. M. Whitehead, and Wilcox, Phys. Rev. 81 (1951) 652;

  + deuteron 2p 75 MeV (Tlab) cs, angp

Particles studied
  + qn

Record comments
Determination of the spin of the +.
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