Chronology of Milestone Events in Particle Physics - MINAKAWA 1959
Chronology of Milestone Events in Particle Physics


Japan emulsion collaboration; Minakawa, O.; Nishimura, Y.; Tsuzuki, M.; Yamanouchi, H.; Aizu, H.; Hasegawa, H.; Ishii, Y.; Tokunaga, S.; Fujimoto, Y.; Hasegawa, S.; Nishimura, J.; Niu, K.; Nishikawa, K.; Imaeda, K.; Kazuno, M.;
Observation of High Energy Jets with Emulsion Chambers. I.-Transverse Momentum of the o Meson
Nuovo Cim. Suppl. 11 (1959) 125;


1. Introduction.
2. Experimental procedure.
1) Design of emulsion chamber.
2) Balloon flight. Scanning.

3. Analysis of the event.
4. Experimental results.
1) Table of the events.
2) Spectrum of the transverse momentum.

5. Summary and discussions.
APPENDIX I. Three dimensional electron shower theory without Landau's approximation.
APPENDIX II. Experimental test on the accuracy of the cascade shower theory.
APPENDIX III. Design of emulsions chamber.
APPENDIX IV. Statistical treatment of eliminating ambiguity of shower axis.

Accelerator COSM Detectors EMUL

Related references
More (earlier) information appears in
The Japanese Emulsion Group, Nuovo Cim. Suppl. 8 (1958) 761;
Analyse data from
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  unspec nucleus jet X >100 GeV (Plab) p, pt
  jet o X pt, p

Particles studied
  jet ex

Record comments
Confirmation of the existence of hadronic jets in high energy collisions: The average PT of hadrons in jets is limited and almost independent of jet energy.
  New Comments List of Comments NY