Chronology of Milestone Events in Particle Physics - DALITZ 1953
Chronology of Milestone Events in Particle Physics


Dalitz, R.H.;
On the Analysis of -Meson Data and the Nature of the -Meson
Phil. Mag. 44 (1953) 1068;

A convenient method of representation is proposed (S 2) for data on -meson decay configurations, applicable when the unlike outgoing -meson is not distinguished. The relation between the spin and-parity of the -meson and the distribution of decay configuration is obtained for some simple cases. The hypothesis that the - and -mesons are identical requires a non-zero spin for this particle and the available data on -meson decay does not exclude this possibility. However, observations in which the unlike outgoing -meson is not distinguished are relatively ineffective in discriminating between the various possibilities. The distortions which strong meson-meson attraction may produce in -decay configurations are discussed; the present data offers no evidence on this effect.

Related references
See also
K. M. Watson and R. N. Stuart, Phys. Rev. 82 (1951) 738;
K. M. Watson, Phys. Rev. 88 (1952) 1163;
D. Rochester and C. C. Butler, Report on Progress in Physics 16 London, Physical Society (1953) 364;
R. H. Dalitz, Proc. Roy. Soc. 66 (1953) 710;
Analyse data from
K. H. Barker, Proc. Roy. Soc. A221 (1954) 328;
M. G. K. Menon and C. O'Ceallaigh, Proc. Roy. Soc. A221 (1954) 292;
R. W. Thompson et al., Phys. Rev. 90 (1953) 329;
R. R. Daniel, J. H. Davies, J. H. Mulvey, and D. H. Perkins, Phil. Mag. 43 (1952) 753;
K. A. Brueckner and K. M. Watson, Phys. Rev. 87 (1952) 621;
R. H. Brown et al., Nature 163 (1949) 82;
R. Armenteros et al., Nature 167 (1951) 501;
M. Danysz, W. O. Lock, and G. Yekutieli, Nature 169 (1952) 364;

  meson + 2 mass
  mesono + o mass
  meson+ 2+ mass

Particles studied
  meson qn

Record comments
Invention of the Dalitz plot method to analyse spatial quantum numbers of mesons by their decays into three known particles.
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