Hill, R.O.; Johansson, S.D.; Gardner, F.T.; Nuclear Emulsion Observation of Annihilation of an Antiproton
Phys. Rev. 101 (1956) 907;
An event, which we believe has a reasonable probability of representing the creation and subsequent annihilation of an antiproton, has been observed in emulsions exposed directly in the proton beam of the Berkeley Bevatron. (Extracted from the introductory part of the paper.).
Related references See also A. Husain and E. Pickup, Phys. Rev. 98 (1955) 136;
M. F. Kaplon, J. Klarmann, and G.Yekutieli, Phys. Rev. 99 (1955) 1528;
G. Feldman, Phys. Rev. 95 (1954) 1967;
D. Fox, Phys. Rev. 94 (1954) 499;
R. N. Thorn, Phys. Rev. 94 (1954) 501;
J. R. Fleming and J. J. Lord, Phys. Rev. 92 (1953) 511;
p nucleus X
6.2 GeV (Tlab)
nucleus mult[charged] X
First indication of annihilation of the antiproton in matter.