Chronology of Milestone Events in Particle Physics - CHRISTENSON 1970
Chronology of Milestone Events in Particle Physics

CHRISTENSON 1970

Christenson, J.C.; Hicks, G.S.; Lederman, L.M.; Limon, P.J.; Pope, B.G.; Zavattini, E.;
Observation of Massive Muon Pairs in Hadron Collisions
Phys. Rev. Lett. 25 (1970) 1523;

Abstracts
Muon pairs in the mass range 1 < m < 6.7 GeV/c2 have been observed in collision of high-energy protons with uranium nuclei. At an incident energy of 29 GeV, the cross section varies smoothly as d/dm approx 10-32/m5 cm2 (GeV/c)-2 and exhibits no resonant structure. The total cross section increases by a factor of 5 as the proton energy rises from 22 to 29.5 GeV.

Accelerator BNL Detectors SPEC

Related references
See also
T. D. Lee and G. C. Wick, Nucl. Phys. B9 (1969) 209;
S. M. Berman, D. J. Levy, and T. L. Neff, Phys. Rev. Lett. 23 (1969) 1363;
J. J. Sakurai, Phys. Rev. Lett. 24 (1970) 968;
V. A. Matveev, R. M. Muradyan, and A. N. Tavkhelidze, preprint JINR-E2-4966 (Dubna 1970);
T. D. Lee and G. C. Wick, Phys. Rev. D2 (1970) 1033;
S. D. Drell and T. M. Yan, Phys. Rev. Lett. 25 (1970) 316;
Analyse data from
E. W. Anderson et al., Phys. Rev. Lett. 19 (1967) 198;
D. R. Earles et al., Phys. Rev. Lett. 25 (1970) 129;
J. E. Augustin et al., Phys. Lett. 28B (1968) 508;
B. D. Hyams et al., Phys. Lett. 24B (1967) 634;
A. Wehmann et al., Phys. Rev. Lett. 17 (1966) 1113;

Reactions
  p U + X 22-29.5 GeV (Plab) mass

Record comments
First observation of the high mass muon pairs in hadron collisions - prototype of the experiments which lead to the discovery of the J /(1S) (Ting) and (1S) (Herb) as well as "Drell-Yan'' analyses of quark structure functions.
    
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