Elsevier

Physics Letters B

Volume 45, Issue 5, 20 August 1973, Pages 525-527
Physics Letters B

Photon production in 69 GeV pp interactions

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Abstract

We present results on 728 photon conversions into electron pairs observed in the hydrogen bubble chamber MIRABELLE. The average number of π° per inelastic pp collision is found to be 2.57 ± 0.13 and this number increases with the number n of charged particles up to n=12. The comparison of our invariant cross section F(x, p⊥, s) for the reaction pp → γ X with higher energy results shows that scaling behaviour is probably reached at 70 GeV.

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