Comparison of low-PT photon production in high- and low-multiplicity collisions at the CERN ISR

T. Kesson*, M. G. Albrow, S. Almehed, E. Anassontzis, R. Batley, O. Benary, H. Bøggild, O. Botner, H. Breuker, V. Burkert, B. Callen, R. Carosi, A. A. Carter, J. R. Carter, V. Chernyatin, Y. Choi, W. E. Cleland, S. Dagan, E. Dahl-Jensen, I. Dahl-JensenG. Damgaard, B. Dolgoshein, S. Eidelman, C. W. Fabjan, I. Gavrilenko, U. Goerlach, Y. Goloubkov, K. H. Hansen, V. Hedberg, P. Ioannou, G. Jarlskog, T. Jensen, A. Kalinovsky, V. Kantserov, S. Katsanevas, C. Kourkoumelis, R. Kroeger, K. Kulka, D. Lissauer, B. Lorstad, I. Mannelli, A. Markou, S. Mayburov, N. A. McCubbin, R. Møller, W. Molzen, P. Nevsky, B. S. Nielsen, L. H. Olsen, Y. Oren, L. K. Resvanis, J. Schukraft, A. Shemleva, V. Sidorov, H. Specht, I. Stumer, M. Sullivan, H. H. Thodberg, J. A. Thompson, J. Williamson, W. J. Willis

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Low-transverse-momentum photon production at the CERN ISR is compared in high- and low-multiplicity events. High-transverse-energy pp collisions and low-multiplicity ±± and pp collisions are studied. Relative photon-to-charged-track production is found to be the same in pp minimum bias, ±± minimum bias, and pp high-transverse-energy collisions, to within 15%. No low-PT excess is seen; the limits are dominated by systematic uncertainties.

Original languageEnglish
Pages (from-to)2687-2694
Number of pages8
JournalPhysical review D
Issue number9
StatePublished - 1988


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