A study of π and K production in proton-uranium and oxygen-uranium interactions at 22 GeV/A using decay muons
The like-sign dimuons copiously recorded in the NA 38 experiment both in p − U and O−U reactions at 200 GeV/nucleon are interpreted as resulting from decays of π and K mesons in comparable proportions. The + +/− − ratio is large (≃1.7) and ascribed to the K + being more copiously produced than the K −. Both the average transverse momentum and the + +/− − ratio are comparable for p−U and O−U reactions, and both increase only slightly with the transverse energy E T .
KeywordsTransverse Energy Quark Matter Decay Muon Hadronic Cross Section Muon Pair
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