21 research outputs found

    A comparison of particles recoiling from high pt direct photons and π°'s at the isr

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    We have studied the distribution of charged particles recoiling from high pT(> 3.5 GeV/c) direct photons and neutral pions in pp collisions at √s = 63 GeV. One expects a different mixture of quark and gluon initiated jets in the two cases, with predominantly u-quark jets recoiling from direct photons. No significant differences are observed in our momentum range apart from the charge composition, with a larger positive to negative ratio for particles with pT > 1 GeV/c opposite direct photons than opposite π°. © 1986 IOP Publishing Ltd
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