Phys. Rev. Lett. 34, 907–910 (1975)Direct Electron-Positron Pair Production by 200-GeV Negative PionsReceived 13 January 1975; published in the issue dated 7 April 1975 We have studied direct electron-positron pair production by the collision of 200-GeV π- mesons with a neon target. The data consist of 622 direct pairs with momenta ranging from 10 MeV/c to 7.5 GeV/c. We have measured the total production rate to an accuracy of 10% and studied the relevant momentum and electron-positron momentum partition spectra. In contrast to several recent experiments, we find excellent agreement with the predictions of quantum electrodynamic calculations. © 1975 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.34.907
DOI:
10.1103/PhysRevLett.34.907
PACS:
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