FEB 01, 1967
Despite two separate experiments in the past two years on electron‐positron pair production that indicate a violation of quantum electrodynamics for small distances (about ), a recent experiment at the DESY 6.2‐GeV electron synchrotron does not confirm the earlier results. A collaboration between groups from the Deutsches Elektronen‐Synchrotron, Hamburg (J. G. Asbury, W. K. Bertram, U. Becker, P. Joos, M. Rhodes and A. J. S. Smith) and Columbia University (S. Friedlander, C. Jordan and Samuel C. C. Ting) reports (Phys. Rev. Letters, 9 Jan. 1967) that first‐order quantum electrodynamics correctly predicts pair production for momentum transfers as great as
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© 1967 American Institute of Physics
