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MINAKAWA 1959

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 π^o Meson
Nuovo Cim. Suppl. 11 (1959) 125;

Contents

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
M. F. Kaplon, B. Peters, and H. L. Brandt, Helv. Phys. Acta 23 (1950) 24;
L. Leprince-Ringuet et al., Compt. Ren. 229 (1949) 163;
E. Lohrmann, Nuovo Cim. 5 (1957) 1074;
F. Roesler and C. B. A. McCusker, Nuovo Cim. 10 (1953) 127;
W. Heitler and C. H. Terreaux, Proc. Roy. Soc. A64 (1953) 929;
G. Cocconi, Phys. Rev. 93 (1954) 1107;
Y. Terashima, Progr. of Theor. Phys. 13 (1955) 1;
R. R. Daniel, J. H. Davies, J. H. Mulvey, and D. H. Perkins, Phil. Mag. 43 (1952) 753;
F. A. Brisbout et al., Phil. Mag. 1 (1956) 605;
M. Koshiba and M. F. Kaplon, Phys. Rev. 97 (1955) 193;
D. Lal, Y. Pal, and Rama, Nuovo Cim. Suppl. 12 (1954) 347;
M. F. Kaplon, B. Peters, and D. M. Ritson, Phys. Rev. 85 (1952) 900;
Soryushiron Kenkyu 12, 1, 24;
B. Edwards et al., Phil. Mag. (7)3 (7)3,) ;
S. Nasegawa, J. Nishimura, and Y. Nishimura, Nuovo Cim. 6 (1957) 979;
I. M. Gramenitsky et al., Zh. Eksp. Teor. Fiz. 32 (1957) 936;
P. Ciok, M. Danysz, and J. Guerula, Nuovo Cim. 6 (1957) 1409;
G. A. Milekhin and I. L. Rozental, Zh. Eksp. Teor. Fiz. 33 (1957) 187;
A. de Benedetti et al., Nuovo Cim. 4 (1956) 1142;
N. A. Dobrotin, G. T. Zacepin, S. I. Nikolskij, and G. B. Hristiansen, Nuovo Cim. 3 (1956) 634;
Z. Koba, Progr. of Theor. Phys. 15 (1956) 461;
L. D. Landau, Doklady Akad. Nauk SSSR 87 (1953) 51;
E. Fermi, Progr. of Theor. Phys. 5 (1950) 570;
J. Nishimura and K. Kamata, Progr. of Theor. Phys. 7 (1951) 185;
M. F. Kaplon, B. Peters, and H. L. Brandt, Phys. Rev. 76 (1949) 1735;

Reactions

	unspec nucleus jet X	>100 GeV (Plab)	p, pt
	jet πo X		pt, p

Particles studied

jet

ex

Record comments
Confirmation of the existence of hadronic jets in high energy collisions: The average P_T of hadrons in jets is limited and almost independent of jet energy.

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