Chronology of Milestone Events in Particle Physics - CHINOWSKY 1962
Chronology of Milestone Events in Particle Physics


Chinowsky, W.; Goldhaber, G.; Goldhaber, S.; Lee, W.; O'Halloran, T.;
On the Spin of the K* Resonance
Phys. Rev. Lett. 9 (1962) 330;

Investigation of the K+ p K* DELTA++ at 1.96 BeV/c with the 20-inch Brookhaven bubble chamber was achieved by looking at K+ p K+ + p events. 201 events out of 310 were in the double-resonant K+ and p + states as shown by the effective mass distribution. From examination of the distribution of the angle between the outgoing K+ meson in the K* centre-of-mass system, and the incident K+ direction, the anisotropy can be fitted with a cos 2 term. Combining this result with those of Alston et al. allows a spin and parity assignment of 1- to be given to the K* . An "Adair analysis'' of the data suggests the type of alignment of the K* spin which is expected if one-pion exchange is the dominant production mode. (Science Abstracts, 1963, 4457. R. J. Griffiths).

Accelerator BNL Detectors HBC-20IN

Related references
More (earlier) information appears in
M. H. Alston et al., Phys. Rev. Lett. 6 (1961) 300;
See also
A. H. Rosenfeld and J. M. Snyder, Rev. Sci. Inst. 33 (1962) 181;
J. P. Berge, F. T. Solmitz, and H. D. Taft, Rev. Sci. Inst. 32 (1961) 538;
R. K. Adair, Phys. Rev. 100 (1955) 1540;
M. M. Block et al., Phys. Rev. Lett. 3 (1959) 291;

  K+ p p K+ + 1.96 GeV (Plab) mass, angp
  K+ p (1232 P33)++ K*(892)o 1.96 GeV (Plab) angp
  K*(892)o K+

Particles studied
  K*(892)o qn

Record comments
Determination of the spin of the K*(892) resonance to be 1.
  New Comments List of Comments