Forward jet production in deep inelastic ep scattering and low-x parton dynamics at HERA Academic Article uri icon

abstract

  • Differential inclusive jet cross sections in neutral current deep inelastic ep scattering have been measured with the ZEUS detector using an integrated luminosity of 38.7 pb-1. The jets have been identified using the kT cluster algorithm in the longitudinally invariant inclusive mode in the laboratory frame; they have been selected with jet transverse energy, ETjet above 6 GeV and jet pseudorapidity, jet, between -1 and 3. Measurements of cross sections as functions of ETjet, Bjrken x and the photon virtuality, Q2, are presented. Three phase-space regions have been selected in order to study parton dynamics from the most global to the most restrictive region of forward-going (close to the proton-beam direction) jets at low x, where the effects of BFKL evolution might be present. The measurements have been compared to the predictions of leading-logarithm parton-shower Monte Carlo models and fixed-order perturbative QCD calculations. In the forward region, O (s1) QCD calculations underestimate the data up to an order of magnitude at low x. An improved description of the data in this region is obtained by including O (s2) QCD corrections, which account for the lowest-order t-channel gluon-exchange diagrams, highlighting the importance of such terms in the parton dynamics at low x. 2005 Elsevier B.V. All rights reserved.

published proceedings

  • Physics Letters B

author list (cited authors)

  • Chekanov, S., Derrick, M., Magill, S., Miglioranzi, S., Musgrave, B., Repond, J., ... Whyte, J.

citation count

  • 19

complete list of authors

  • Chekanov, S||Derrick, M||Magill, S||Miglioranzi, S||Musgrave, B||Repond, J||Yoshida, R||Mattingly, MCK||Pavel, N||Yagües Molina, AG||Antonioli, P||Bari, G||Basile, M||Bellagamba, L||Boscherini, D||Bruni, A||Bruni, G||Cara Romeo, G||Cifarelli, L||Cindolo, F||Contin, A||Corradi, M||De Pasquale, S||Giusti, P||Iacobucci, G||Margotti, A||Montanari, A||Nania, R||Palmonari, F||Pesci, A||Polini, A||Rinaldi, L||Sartorelli, G||Zichichi, A||Aghuzumtsyan, G||Bartsch, D||Brock, I||Goers, S||Hartmann, H||Hilger, E||Irrgang, P||Jakob, H-P||Kind, O||Meyer, U||Paul, E||Rautenberg, J||Renner, R||Voss, KC||Wang, M||Wlasenko, M||Bailey, DS||Brook, NH||Cole, JE||Heath, GP||Namsoo, T||Robins, S||Capua, M||Mastroberardino, A||Schioppa, M||Susinno, G||Tassi, E||Kim, JY||Ma, KJ||Helbich, M||Ning, Y||Ren, Z||Schmidke, WB||Sciulli, F||Chwastowski, J||Eskreys, A||Figiel, J||Galas, A||Olkiewicz, K||Stopa, P||Szuba, D||Zawiejski, L||Adamczyk, L||Bołd, T||Grabowska-Bołd, I||Kisielewska, D||Kowal, AM||Łukasik, J||Przybycień, M||Suszycki, L||Szuba, J||Kotański, A||Słomiński, W||Adler, V||Behrens, U||Bloch, I||Borras, K||Drews, G||Fourletova, J||Geiser, A||Gladkov, D||Göttlicher, P||Gutsche, O||Haas, T||Hain, W||Horn, C||Kahle, B||Kötz, U||Kowalski, H||Kramberger, G||Lelas, D||Lim, H||Löhr, B||Mankel, R||Melzer-Pellmann, I-A||Nguyen, CN||Notz, D||Nuncio-Quiroz, AE||Raval, A||Santamarta, R||Schneekloth, U||Stösslein, U||Wolf, G||Youngman, C||Zeuner, W||Schlenstedt, S||Barbagli, G||Gallo, E||Genta, C||Pelfer, PG||Bamberger, A||Benen, A||Karstens, F||Dobur, D||Vlasov, NN||Bussey, PJ||Doyle, AT||Ferrando, J||Hamilton, J||Hanlon, S||Saxon, DH||Skillicorn, IO||Gialas, I||Carli, T||Gosau, T||Holm, U||Krumnack, N||Lohrmann, E||Milite, M||Salehi, H||Schleper, P||Schörner-Sadenius, T||Stonjek, S||Wichmann, K||Wick, K||Ziegler, A||Ziegler, Ar||Collins-Tooth, C||Foudas, C||Fry, C||Gonçalo, R||Long, KR||Tapper, AD||Kataoka, M||Nagano, K||Tokushuku, K||Yamada, S||Yamazaki, Y||Barakbaev, AN||Boos, EG||Pokrovskiy, NS||Zhautykov, BO||Son, D||de Favereau, J||Piotrzkowski, K||Barreiro, F||Glasman, C||González, O||Jimenez, M||Labarga, L||del Peso, J||Terrón, J||Zambrana, M||Barbi, M||Corriveau, F||Liu, C||Padhi, S||Plamondon, M||Stairs, DG||Walsh, R||Zhou, C||Tsurugai, T||Antonov, A||Danilov, P||Dolgoshein, BA||Sosnovtsev, V||Stifutkin, A||Suchkov, S||Dementiev, RK||Ermolov, PF||Gladilin, LK||Katkov, II||Khein, LA||Korzhavina, IA||Kuzmin, VA||Levchenko, BB||Lukina, O Yu||Proskuryakov, AS||Shcheglova, LM||Zotkin, DS||Zotkin, SA||Abt, I||Büttner, C||Caldwell, A||Liu, X||Sutiak, J||Coppola, N||Grigorescu, G||Grijpink, S||Keramidas, A||Koffeman, E||Kooijman, P||Maddox, E||Pellegrino, A||Schagen, S||Tiecke, H||Vázquez, M||Wiggers, L||de Wolf, E||Brümmer, N||Bylsma, B||Durkin, LS||Ling, TY||Allfrey, PD||Bell, MA||Cooper, AM||Cottrell, A||Devenish, RCE||Foster, B||Grzelak, G||Gwenlan, C||Kohno, T||Patel, S||Straub, PB||Walczak, R||Bellan, P||Bertolin, A||Brugnera, R||Carlin, R||Ciesielski, R||Dal Corso, F||Dusini, S||Garfagnini, A||Limentani, S||Longhin, A||Stanco, L||Turcato, M||Heaphy, EA||Metlica, F||Oh, BY||Whitmore, JJ||Iga, Y||D'Agostini, G||Marini, G||Nigro, A||Hart, JC||Abramowicz, H||Gabareen, A||Kananov, S||Kreisel, A||Levy, A||Kuze, M||Kagawa, S||Tawara, T||Hamatsu, R||Kaji, H||Kitamura, S||Matsuzawa, K||Ota, O||Ri, YD||Costa, M||Ferrero, MI||Monaco, V||Sacchi, R||Solano, A||Arneodo, M||Ruspa, M||Fourletov, S||Koop, T||Martin, JF||Mirea, A||Butterworth, JM||Hall-Wilton, R||Jones, TW||Loizides, JH||Sutton, MR||Targett-Adams, C||Wing, M||Ciborowski, J||Kulinski, P||Łużniak, P||Malka, J||Nowak, RJ||Pawlak, JM||Sztuk, J||Tymieniecka, T||Tyszkiewicz, A||Ukleja, A||Ukleja, J||Żarnecki, AF||Adamus, M||Plucinski, P||Eisenberg, Y||Hochman, D||Karshon, U||Lightwood, MS||Everett, A||Kçira, D||Lammers, S||Li, L||Reeder, DD||Rosin, M||Ryan, P||Savin, AA||Smith, WH||Dhawan, S||Bhadra, S||Catterall, CD||Cui, Y||Hartner, G||Menary, S||Noor, U||Soares, M||Standage, J||Whyte, J

publication date

  • January 2006