Large transverse momentum particle production in αα and pp collisions at the CERN ISR

T. Åkesson, M. G. Albrow, S. Almehed, O. Benary, H. Bøggild, O. Botner, H. Brody, V. Burkert, A. Di Ciaccio, D. Cockerill, S. Dagan, E. Dahl-Jensen, I. Dahl-Jensen, G. Damgaard, W. M. Evans, C. W. Fabjan, P. Frandsen, S. Frankel, W. Frati, H. GordonA. Hallgren, K. H. Hansen, B. Heck, H. J. Hilke, J. E. Hooper, G. Jarlskog, P. Jeffreys, G. Kesseler, T. Killian, J. v.d. Lans, D. Lissauer, B. Lörstad, T. Ludlam, N. A. McCubbin, A. Melin, U. Mjornmark, R. Møller, W. Molzon, B. S. Nielsen, A. Nilsson, L. H. Olsen, Y. Oren, L. Rosselet, E. Rosso, A. Rudge, R. H. Schindler, B. Schistad, W. J. Willis, M. Winik, W. Witzeling, M. Wood, C. Woody

Research output: Contribution to journalArticlepeer-review


The production of charged hadrons with high pT in αα collisions at √s=126 GeV and pp collisions at √s=31 and 63 GeV is compared, and the structure of the events associated with the high-pT particles is studied. The probability of finding associated particles close to the trigger particle increases strongly between √s=31 and 63 GeV for pp collisions. For pT>2.5GeV/c the αα/pp cross section ratio at the same energy per nucleon is measured to be 18.7 ± 2.0, to be compared with A2 = 16, and a higher associated multiplicity is observed for αα.

Original languageEnglish
Pages (from-to)309-320
Number of pages12
JournalNuclear Physics, Section B
Issue number2
StatePublished - 27 Dec 1982


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