Title

The contribution of qq̄ annihilations to dimuon production in πN interactions

Document Type

Article

Publication Date

8-27-1979

Abstract

We present data on dimuon production by 16 GeV π+ and π- beams on a Cu target. From the data we evaluate, for π-N collisions, the fraction of dimuon events that originate from the annihilation process q q ̄ → μ+μ-. Using this information the experimentally determined cross section for the process q q ̄ → μ+μ- is observed to be in agreement with the Drell-Yan model over a wide range of incident energies. The observed deviations from exact scaling are of the order predicted by QCD calculations for the Q2-dependence of the nucleon and the pion structure function. © 1979.

Publication Source (Journal or Book title)

Physics Letters B

First Page

427

Last Page

431

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