Dijet cross sections in photoproduction at HERA

Dijet cross sections in photoproduction at HERA

Dijet cross sections are presented using photoproduction data obtained with the ZEUS detector during 1994. These measurements represent an extension of previous results, as the higher statistics allow cross sections to be measured at higher jet transverse energy (Eτjet). Jets are identified in the h...

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Veröffentlicht in:The European physical journal. C, Particles and fields Particles and fields, 1998-03, Vol.1 (1-2), p.109-122
Hauptverfasser: Breitweg, J., Derrick, M., Krakauer, D., Magill, S., Mikunas, D., Musgrave, B., Repond, J., Stanek, R., Talaga, R. L., Yoshida, R., Zhang, H., Mattingly, M. C. K., Anselmo, F., Antonioli, P., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Romeo, G. Cara, Castellini, G., Cifarelli, L., Cindolo, F., Contin, A., Corradi, M., De Pasquale, S., Gialas, I., Giusti, P., Iacobucci, G., Laurenti, G., Levi, G., Margotti, A., Massam, T., Nania, R., Palmonari, F., Pesci, A., Polini, A., Ricci, F., Sartorelli, G., Zamora Garcia, Y., Zichichi, A., Amelung, C., Bornheim, A., Brock, I., Coböken, K., Crittenden, J., Deffner, R., Eckert, M., Feld, L., Grothe, M., Hartmann, H., Heinloth, K., Heinz, L., Hilger, E., Jakob, H. -P., Katz, U. F., Kerger, R., Paul, E., Pfeiffer, M., Rembser, Ch, Stamm, J., Wedemeyers, R., Wieber, H., Bailey, D. S., Campbell-Robson, S., Cottingham, W. N., Foster, B., Hall-Wilton, R., Hayes, M. E., Heath, G. P., Heath, H. F., McFall, J. D., Piccioni, D., Roff, D. G., Tapper, R. J., Arneodo, M., Ayad, R., Capua, M., Garfagnini, A., Iannotti, L., Schioppa, M., Susinno, G., Kim, J. Y., Lee, J. H., Lim, I. T., Pac, M. Y., Caldwell, A., Cartiglia, N., Jing, Z., Liu, W., Mellado, B., Parsons, J. A., Ritz, S., Sampson, S., Sciulli, F., Straub, P. B., Zhu, Q., Borzemski, P., Chwastowski, J.
Format: Artikel
Sprache:eng
Schlagworte:
Algorithms
Cross-sections
Dependence
Mathematical analysis
Photons
Photoproduction
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Beschreibung
Zusammenfassung:Dijet cross sections are presented using photoproduction data obtained with the ZEUS detector during 1994. These measurements represent an extension of previous results, as the higher statistics allow cross sections to be measured at higher jet transverse energy (Eτjet). Jets are identified in the hadronic final state using three different algorithms, and the cross sections compared to complete next-to-leading order QCD calculations. Agreement with these calculations is seen for the pseudorapidity dependence of the direct photon events with ETjet > 6 GeV and of the resolved photon events with Etjet > 11 GeV. Calculated cross sections for resolved photon processes with 6 GeV < ETjet < 11 GeV lie below the data.
ISSN:1434-6044
1434-6052
DOI:10.1007/BF01245801