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Nobel prize to L. M. Lederman, M. Schwartz, and J. Steinberger awarded in 1988 "for the neutrino beam method and the demonstration of the doublet structure of the leptons through the discovery of the muon neutrino''

DANBY 1962

Danby, G.T.; Gaillard, J.M.; Goulianos, K.; Lederman, L.M.; Mistry, N.; Schwartz, M.; Steinberger, J.;
Observation of High-Energy Neutrino Reactions and the Existence of Two Kinds of Neutrinos
Phys. Rev. Lett. 9 (1962) 36;

Reprinted in
R. N. Cahn and G. Goldhaber, The Experimental Foundations of Particle Physics, Cambridge Univ. Press (1991) 184.
The Physical Review - the First Hundred Years, AIP Press (1995) 881.

Motivation
In the course of an experiment at the Brookhaven AGS, we have observed the interaction of high-energy neutrinos with matter. These neutrinos were produced primarily as the result of the decay of the pion: ^{± ±} (/) It is the purpose of this Letter to report some of the results of this experiment including (1) demonstration that the neutrinos we have used produce mesons but do not produce electrons, and hence are very likely different from the neutrinos involved in decay and (2) approximate cross sections. (Extracted from the introductory part of the paper.).

Accelerator BNL Detectors SPRK, CNTR

Related references
See also
T. D. Lee and C. D. Yang, Phys. Rev. Lett. 4 (1960) 307;
G. Feinberg, F. Gürsey, and A. Pais, Phys. Rev. Lett. 7 (1961) 208;
N. Cabibbo and R. Gatto, Nuovo Cim. 15 (1960) 304;
G. Feinberg, Phys. Rev. 110 (1958) 1482;
E. J. Konopinski and H. M. Mahmoud, Phys. Rev. 92 (1953) 1045;
J. Schwinger, Ann.Phys. 2 (1957) 407;
I. Kawakami, Progr. of Theor. Phys. 19 (1957) 459;
M. Konuma, Nucl. Phys. 5 (1958) 504;
S. A. Bludman, Bull.Am.Phys.Soc. 4 (1959) 80;
S. Oneda and J. C. Pati, Phys. Rev. Lett. 2 (1959) 125;
K. Nishijima, Phys. Rev. 108 (1957) 907;
D. Bartlett, S. Devons, and A. Sachs, Phys. Rev. Lett. 8 (1962) 120;
S. Frankel et al., Phys. Rev. Lett. 8 (1962) 123;
B. Pontecorvo, JETP 10 (1960) 1236;
M. Schwartz, Phys. Rev. Lett. 4 (1960) 306;
W. F. Baker et al., Phys. Rev. Lett. 7 (1961) 101;
H. L. Anderson et al., Phys. Rev. 119 (1960) 2050;
G. Culligan et al., Phys. Rev. Lett. 7 (1961) 458;
R. H. Hildebrand, Phys. Rev. Lett. 8 (1962) 34;
E. Bleser et al., Phys. Rev. Lett. 8 (1962) 288;
R. P. Feynman and M. Gell-Mann, Phys. Rev. 109 (1958) 193;
E. C. G. Sudarshan and R. E. Marshak, Phys. Rev. 109 (1958) 1860;
R. Plano, Phys. Rev. 119 (1960) 1400;
T. D. Lee, P.Markstein, and C. N. Yang, Phys. Rev. Lett. 7 (1961) 429;
Y. Yamaguchi, Progr. of Theor. Phys. 23 (1960) 1117;

Reactions

	p Be X	15 GeV (Plab)	flux
	Al ± X	<3 GeV (Plab)	cs

Particles studied

ex

Record comments
First evidence for the . Evidence for more than one kind of neutrinos.

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