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

T. Akesson, M. G. Albrow, S. Almehed, E. Anassontzis, R. Batley, O. Benary, H. Boggild, O. Botner, H. Breuker, V. Burkert, A. Di Ciaccio, D. Cockerill, S. Dagan, E. Dahl-Jensen, I. Dahl-Jensen, G. Damgaard, W. M. Evans, C. W. Fabjan, H. Gordon, A. HallgrenB. Heck, H. J. Hilke, G. Jarlskog, P. Jeffreys, T. Killian, C. Kourkoumelis, J. V.D. Lans, D. Lissauer, B. Lörstad, T. Ludlam, N. A. McCubbin, I. Mannelli, U. Mjörnmark, W. Molzon, B. S. Nielsen, Y. Oren, R. B. Palmer, D. C. Rahm, P. Rehak, L. K. Resvanis, L. Rosselet, E. Rosso, A. Rudge, R. H. Schindler, B. Schistad, I. Stumer, W. J. Willis, M. Winik, W. Witzeling, C. Woody

1 Citation (Scopus)

Abstract

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°.

Original languageEnglish
JournalPhysica Scripta
Volume34
Issue number2
Pages (from-to)106-110
Number of pages5
ISSN0031-8949
DOIs
Publication statusPublished - 1 Aug 1986

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