Abstract
Prompt lepton production in hadron collisions is explained in a cluster production model, by assuming that the clusters have a small branching ratio for decay into leptons. The production of low mass and small momentum clusters, normalized to reproduce pionization, can explain the observed large increases of e/π ratio for decreasing p bdT at large angles and the decreasing values of ω/π with increasing x lab near the forward direction. The present model predicts a large increase of the e/ω ratio near the forward direction as x lab increases.
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