The dominance of jets at large transverse energy in a full-azimuth hadron calorimeter at ISR energies

T. Åkesson*, M. G. Albrow, S. Almehed, R. Batley, O. Benary, O. Botner, H. Bøggild, H. Breuker, H. Brody, V. Burkert, R. Carosi, A. A. Carter, J. R. Carter, P. Cecil, W. E. Cleland, S. U. Chung, D. Cockerill, S. Dagan, E. Dahl-Jensen, I. Dahl-JensenP. Dam, G. Damgaard, S. Eidelman, W. M. Evans, C. W. Fabjan, P. Frandsen, S. Frankel, W. Frati, M. Gibson, U. Goerlach, H. Gordon, A. Hallgren, K. H. Hansen, B. Heck, V. Hedberg, J. Hiddleston, H. J. Hilke, J. Hooper, G. Jarlskog, P. Jeffreys, T. Jensen, A. Kalinovsky, G. Kesseler, T. Killian, R. Kroeger, K. Kulka, J. v.d. Lans, J. Lindsay, D. Lissauer, B. Lörstad, T. Ludlam, A. Markou, N. A. McCubbin, U. Mjörnmark, W. Molzon, R. Møller, B. S. Nielsen, A. Nilsson, L. H. Olsen, Y. Oren, L. Rosselet, E. Rosso, A. Rudge, R. Schindler, I. Stumer, M. Sullivan, G. Thorstenson, E. Vella, J. Williamson, W. J. Willis, M. Winik, W. Witzeling, C. Woody, W. A. Zajc

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Events with a large transverse energy in a calorimeter with full azimuthal coverage and |y| < 0.9 have been investigated in pp collisions at √s = 30, 45, and 63 GeV. A striking change in the event structure, corresponding to a clear emergence of high-pT jets, is observed at √s = 63 and 45 GeV in the region between 25 and 35 GeV in transverse energy. At √s = 30 GeV, the data extend to ET ∼ 20 GeV, but no such change in the event structure is observed.

Original languageEnglish
Pages (from-to)354-360
Number of pages7
JournalPhysics Letters B
Issue number5
StatePublished - 1 Sep 1983


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