Experimental study of the emergence of two-jet dominance in [formula omitted]p collisions at √ s = 630 GeV

• Published in: Physics letters. B Vol. 165; no. 4; pp. 441 - 448
• Main Authors: Appel, J.A., Bagnaia, P., Banner, M., Battiston, R., Bernlöhr, K., Borer, K., Borghini, M., Carboni, G., Cavasinni, V., Cenci, P., Chollet, J.-C., Clark, A.G., Conta, C., Darriulat, P., De Lotto, B., Del Prete, T., Di Lella, L., Dines-Hansen, J., Einsweiler, K., Engelmann, R., Fayard, L., Fraternali, M., Froidevaux, D., Gaillard, J.-M., Gildemeister, O., Goggi, V.G., Gössling, C., Hahn, B., Hänni, H., Hansen, J.R., Hansen, P., Harnew, N., Himel, T., Iconomidou-Fayard, L., Jenni, P., Kluge, E.E., Kofoed-Hansen, O., Lançon, E., Livan, M., Loucatos, S., Madsen, B., Mani, P., Mansoulié, B., Mantovani, G.C., Mapelli, L., Meier, K., Merkel, B., Mollerud, R., Moniez, M., Moning, R., Morganti, M., Onions, C., Parker, M.A., Parrour, G., Pastore, F., Pepe, M., Plothow-Besch, H., Polverel, M., Repellin, J.-P., Rimoldi, A., Rothenberg, A.F., Roussarie, A., Ruhlmann, V., Sauvage, G., Schacher, J., Schlötelburg, M., Stocker, F., Swartz, M., Teiger, J., Tovey, S.N., Tsang, W.Y., Valdata-Nappi, M., Vercesi, V., Weidberg, A.R., Wunsch, M., Zaccone, H.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.12.1985
• ISSN: 0370-2693; 1873-2445
• DOI: 10.1016/0370-2693(85)91262-6

A heuristic model is used to describe data collected by the UA2 experiment at √ s = 630 GeV. Distributions of the energy sharing between the leading clusters and the rest of the event are examined. The main features of these distributions can be described by a two-component model with soft, collective interactions dominating at low transverse energy and hard, constituent interactions dominating at high transverse energy. This model provides a simple picture of the emergence of two-jet dominance at SPS p p Collider energies.