Direct evidence for the emergence of jets in events triggered on large transverse energy in pp collisions at $\sqrt{s}$ = 63 GeV

The authors present data obtained from a 1.7 sr hadron calorimeter, triggered on transverse energy, in pp collisions at \sqrt{s}=63 GeV at the CERN-ISR. From the change in the distribution of energy in the calorimeter, they extract the cross section for two-constituent hard scattering for p/sub T/ b...

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Detalles Bibliográficos
Autores principales: Åkesson, T, Albrow, Michael G, Almehed, S, Batley, J Richard, Benary, O, Bøggild, H, Botner, O, Brody, H, Burkert, V D, Di Ciaccio, Anna, Cockerill, D J A, Dagan, S, Dahl-Jensen, Erik, Dahl-Jensen, I, Damgaard, G, Evans, W M, Fabjan, Christian Wolfgang, Frandsen, Poul Kjaer, Frankel, S, Frati, W, Gordon, H, Hallgren, A, Hansen, K H, Heck, B, Hilke, Hans Jürgen, Hooper, J E, Jarlskog, G, Jeffreys, P, Jensen, T, Kesseler, G, Killian, T, Van der Lans, J, Lissauer, D, Lörstad, B, Ludlam, Thomas W, McCubbin, N A, Mjörnmark, U, Møller, R, Molzon, W R, Nielsen, B S, Nilsson, A, Olsen, L H, Oren, Y, Rosselet, L, Rosso, E, Schindler, R H, Schistad, B L, Stumer, I, Vella, E N, Willis, W J, Winik, M, Witzeling, W, Woody, C
Lenguaje:eng
Publicado: 1982
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/0370-2693(82)90626-8
http://cds.cern.ch/record/139814
Descripción
Sumario:The authors present data obtained from a 1.7 sr hadron calorimeter, triggered on transverse energy, in pp collisions at \sqrt{s}=63 GeV at the CERN-ISR. From the change in the distribution of energy in the calorimeter, they extract the cross section for two-constituent hard scattering for p/sub T/ between 6 and 14 GeV at y=0. The decrease of this jet cross section over this p/sub T/ range is consistent with exp (-bp/sub T/), with b=(1.02+or-0.09) GeV/sup -1/. The slope and normalization of the cross section agree well with a QCD motivated Monte Carlo model. The ratio between jet and single particle cross sections ((d sigma /sub JET//dp/sub T/)/(d sigma (\pi^{0})/dp/sub T/)) mod /sub y=0/ changes from about 200 at 6 GeV to about 1500 at 14 GeV.

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