Elsevier

Physics Letters B

Volume 86, Issue 1, 10 September 1979, Pages 98-102
Physics Letters B

First evidence for upsilon production by pions

https://doi.org/10.1016/0370-2693(79)90629-4Get rights and content

Abstract

We have measured the production of massive muon pairs in hadronic collisions at the CERN Super Proton Synchrotron (SPS). A clear signal of production of the ϒ resonance by π+ of 200 GeV/c and π− of 200 and 280 GeV/c on a platinum target is observed.

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