Dijet photoproduction at HERA and the structure of the photon

Chekanov, S. et al. (2002) Dijet photoproduction at HERA and the structure of the photon. European Physical Journal C, 23(4), 615 -631. (doi: 10.1007/s100520200936)

Abstract

The dijet cross section in photoproduction has been measured with the ZEUS detector at HERA using an integrated luminosity of 38.6 pb/sup -1/. The events were required to have a virtuality of the incoming photon, Q/sup 2/, of less than 1 GeV/sup 2/ and a photon-proton centre-of-mass energy in the range 134 lt W/sub gamma p/ lt 277 GeV. Each event contains at least two jets satisfying transverse-energy requirements of E/sub T//sup jet1/ gt 14 Gev and E/sub T//sup jet2/ gt 11 GeV and pseudorapidity requirements of -1 eta /sup jet1,2/ lt 2.4. The measurements are compared to next-to-leading-order QCD predictions. The data show particular sensitivity to the density of partons in the photon, allowing the validity of the current parameterisations to be tested.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Saxon, Professor David and Collins-Tooth, Dr Christopher and Bussey, Dr Peter and Doyle, Professor Anthony and Skillicorn, Professor Ian
• Authors: Chekanov, S., Derrick, M., Krakauer, D., Magill, S., Musgrave, B., Pellegrino, A., Repond, J., Yoshida, R., Mattingly, M.C.K., Antonioli, P., Bari, G., Basile, M., Bellagamba, L., Boscherini, D., Bruni, A., Bruni, G., Romeo, G.C., Cifarelli, L., Cindolo, F., Contin, A., Corradi, M., de Pasquale, S., Giusti, P., Iacobucci, G., Levi, G., Margotti, A., Massam, T., Nania, R., Palmonari, F., Pesci, A., Sartorelli, G., Zichichi, A., Aghuzumtsyan, G., Bartsch, D., Brock, I., Crittenden, J., Goers, S., Hartmann, H., Hilger, E., Irrgang, P., Jakob, H.P., Kappes, A., Katz, U.F., Kerger, R., Kind, O., Paul, E., Rautenberg, J., Renner, R., Schnurbusch, H., Stifutkin, A., Tandler, J., Voss, K.C., Weber, A., Wessoleck, H., Bailey, D.S., Brook, N.H., Cole, J.E., Poster, B., Heath, G.P., Heath, H.F., Robins, S., Rodrigues, E., Scott, J., Tapper, R.J., Wing, M., Capua, M., Mastroberardino, A., Schioppa, M., Susinno, G., Jeoung, H.Y., Kim, J.Y., Lee, J.H., Lim, I.T., Ma, K.J., Pac, M.Y., Caldwell, A., Helbich, M., Liu, X., Mellado, B., Paganis, S., Schmidke, W.B., Sciulli, F., Chwastowski, J., Eskreys, A., Figiel, J., Olkiewicz, K., Przybycieii, M.B., Stopa, P., Zawiejski, L., Bednarek, B., Grabowska-Bold, I., Jelefi, K., Kisielewska, D., Kowal, A.M., Kowal, M., Kowalski, T., Mindur, B., Yciefi, M.P., Bska, E.R.Z., Suszycki, L., Szuba, D., Szuba, J., Kotanski, A., Slominski, W., Bauerdick, L.A.T., Behrens, U., Borras, K., Chiochia, V., Dannheim, D., Desler, K., Drews, G., Fourletova, J., Fox-Murphy, A., Fricke, U., Geiser, A., Goebel, F., Gttlicher, P., Graciani, R., Haas, T., Hain, W., Hartner, G.F., Hillert, S., Ktz, U., Kowalski, H., Labes, H., Lelas, D., Lhr, B., Mankel, R., Martens, J., Martfnez, M., Moritz, M., Notz, D., Petrucci, M.C., Polini, A., Schneekloth, U., Selonke, F., Stonjek, S., Surrow, B., Whitmore', J.J., Wichmann, R., Wolf, G., Youngman, C., Zenner, W., Coldewey, C., Lopez-Duran Viani, A., Meyer, A., Schlenstedt, S., Barbagli, G., Gallo, E., Genta, C., Pelfer, P.G., Bamberger, A., Benen, A., Coppola, N., Markun, P., Raach, H., Wolfle, S., Bell, M., Bussey, P.J., Doyle, A.T., Clasman, C., Hanlon, S., Lee, S.W., Lupi, A., McCance, G.J., Saxon, D.H., Skillicorn, I.O., Bodmann, B., Holm, U., Salehi, H., Wick, K., Ziegler, A., Ziegler, A., Carli, T., Cialas, I., Klimek, K., Lohrmann, E., Milite, M., Collins-Tooth, C., Foudas, C., Gongalo, R., Long, K.R., Metlica, F., Miller, D.B., Tapper, A.D., Walker, R., Cloth, P., Filges, D., Kuze, M., Nagano, K., Tokushuku, K., Yamada, S., Yamazaki, Y., Barakbaev, A.N., Boos, E.G., Pokrovskiy, N.S., Zhautykov, B.O., Ahn, S.H., Lee, S.B., Park, S.K., Lim, H., Son, D., Barreiro, F., Garcia, G., Gonzalez, O., Labarga, L., del Peso, J., Redondo, I., Terron, J., Vazquez, M., Barbi, M., Bertolin, A., Corriveau, F., Ochs, A., Padhi, S., Stairs, D.C., St Laurent, M., Tsurugai, T., Antonov, A., Bashkirov, V., Danilov, P., Dolgoshein, B.A., Gladkov, D., Sosnovtsev, V., Suchkov, S., Dementiev, R.K., Ermolov, P.F., Golubkov, Y.A., Katkov, I.I., Khein, L.A., Korotkova, N.A., Korzhavina, I.A., Kuzmin, V.A., Levchenko, B.B., Lukina, O.Y., Proskuryakov, A.S., Shcheglova, L.M., Solomin, A.N., Vlasov, N.N., Zotkin, S.A., Bokel, C., Engelen, J., Crijpink, S., Koffeman, E., Kooijman, P., Maddox, E., Schagen, S., Tassi, E., Tiecke, H., Tuning, N., Velthuis, J.J., Wiggers, L., de Wolf, E., Brummer, N., and Bylsma, B.
• Subjects: Q Science > QC Physics
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: European Physical Journal C
• ISSN: 1434-6044