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

descriptionPublicationkeyboard_double_arrow_right Article , Preprint 01 Jan 2006Embargo end date: 01 Jan 2005 Italy, United Kingdom, Italy, United Kingdom, Italy, Belgium, Germany, Italy, Italy, Italy English Publisher:Elsevier BVJournal:Physics Letters B, volume 632, pages 13-26 (issn: 0370-2693,

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Authors: Chekanov, S.; Derrick, M.; Antonioli, P.; Kahle, B.; Kotz, U.; Kowalski, H.; Kramberger, G.; +193 Authors

Chekanov, S.; Derrick, M.; Antonioli, P.; Kahle, B.; Kotz, U.; Kowalski, H.; Kramberger, G.; Lelas, D.; Lim, H.; Lohr, B.; Mankel, R.; Melzer-Pellmann, I. A.; Nguyen, C. N.; Bari, G.; Notz, D.; Nuncio-Quiroz, A. E.; Raval, Amita; Santamarta, R.; Schneekloth, U.; Stosslein, U.; Wolf, G.; Youngman, C.; Zeuner, W.; Schlenstedt, S.; Basile, M.; Barbagli, G.; Gallo, E.; Genta, C.; Pelfer, P. G.; Bamberger, A.; Benen, A.; Karstens, F.; Dobur, D.; Vlasov, N. N.; Bussey, P. J.; Bellagamba, L.; Doyle, A. T.; Ferrando, J.; Hamilton, J.; Hanlon, S.; Saxon, D. H.; Skillicorn, I. O.; Gialas, I.; Carli, T.; Gosau, T.; Holm, U.; Boscherini, D.; Krumnack, N.; Lohrmann, E.; Milite, M.; Salehi, H.; Schleper, P.; Schorner-Sadenius, T.; Stonjek, S.; Wichmann, K.; Wick, K.; Ziegler, A.; Bruni, A.; Ziegler, Ar.; Collins-Tooth, C.; Foudas, C.; Fry, C.; Goncalo, R.; Long, K. R.; Tapper, A. D.; Kataoka, M.; Nagano, K.; Tokushuku, K.; Bruni, G.; Yamada, S.; Yamazaki, Y.; Barakbaev, A. N.; Boos, E. G.; Pokrovskiy, N. S.; Zhautykov, B. O.; Son, D.; de Favereau, J.; Piotrzkowski, K.; Barreiro, F.; Cara Romeo, G.; Glasman, C.; Gonzalez, O.; Jimenez, M.; Labarga, L.; del Peso, J.; Terron, J.; Zambrana, M.; Barbi, M.; Corriveau, F.; Liu, C.; Cifarelli, L.; Padhi, S.; Plamondon, M.; Stairs, D. G.; Walsh, R.; Zhou, C.; Tsurugai, T.; Antonov, A.; Danilov, P.; Dolgoshein, B. A.; Sosnovtsev, V.; Cindolo, F.; Stifutkin, A.; Suchkov, S.; Dementiev, R. K.; Ermolov, P. F.; Gladilin, L. K.; Katkov, I. I.; Khein, L. A.; Korzhavina, I. A.; Kuzmin, V. A.; Levchenko, B. B.; Magill, S.; Contin, A.; Lukina, O. Yu.; Proskuryakov, A. S.; Shcheglova, L. M.; Zotkin, D. S.; Zotkin, S. A.; Abt, I.; Buttner, C.; Caldwell, A.; Liu, X.; Sutiak, J.; Corradi, M.; Coppola, N.; Grigorescu, G.; Grijpink, S.; Keramidas, A.; Koffeman, E.; Kooijman, P.; Maddox, E.; Pellegrino, A.; Schagen, S.; Tiecke, H.; De Pasquale, S.; Vazquez Acosta, Monica Luisa; Wiggers, L.; de Wolf, E.; Brummer, N.; Bylsma, B.; Durkin, L. S.; Ling, T. Y.; Allfrey, Philip Daniel; Bell, M. A.; Cooper-Sarkar, A. M.; Giusti, P.; Cottrell, A.; Devenish, R. C. E.; Foster, B.; Grzelak, G.; Gwenlan, C.; Kohno, T.; Patel, S.; Straub, P. B.; Walczak, R.; Bellan, P.; Iacobucci, G.; Bertolin, A.; Brugnera, R.; Carlin, R.; Ciesielski, R.; Dal Corso, F.; Dusini, S.; Garfagnini, A.; Limentani, S.; Longhin, A.; Stanco, L.; Margotti, A.; Turcato, M.; Heaphy, E. A.; Metlica, F.; Oh, B. Y.; Whitmore, J. J.; Iga, Y.; D'Agostini, G.; Marini, G.; Nigro, A.; Hart, J. C.; Montanari, A.; Abramowicz, H.; Gabareen, A.; Kananov, S.; Kreisel, A.; Levy, A.; Kuze, M.; Kagawa, S.; Tawara, T.; Hamatsu, R.; Kaji, H.; Nania, R.; Kitamura, S.; Matsuzawa, K.; Ota, O.; Ri, Y. D.; Costa, M.; Ferrero, M. I.; Monaco, V.; Sacchi, R.; Solano, A.;

doi: 10.1016/j.physletb.2005.09.066 , 10.48550/arxiv.hep-ex/0502029

arXiv: hep-ex/0502029

handle: 2078/31918 , 20.500.11770/127620 , 11577/2486554 , 11386/1544663 , 11573/360706 , 11585/26782 , 2318/47752

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

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Abstract

Differential inclusive jet cross sections in neutral current deep inelastic ep scattering have been measured with the ZEUS detector. Three phase-space regions have been selected in order to study parton dynamics 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, QCD calculations at order alpha_s^1 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 QCD corrections at order alpha_s^2, which account for the lowest-order t-channel gluon-exchange diagrams, highlighting the importance of such terms in parton dynamics at low x.

25 pages, 4 figures

Countries

Italy, United Kingdom, Italy, United Kingdom, Italy, Belgium, Germany, Italy, Italy, Italy

Related Organizations

University of Wisconsin–Madison
United States
University of Toronto
Canada
University of Glasgow
United Kingdom
University of Turin
Italy
University of Calabria
Italy

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Keywords

electron p: deep inelastic scattering, small-x, neutral current, Lipatov equation, approx. 300 GeV-cms, FOS: Physical sciences, momentum transfer dependence, rapidity dependence, x-dependence, High Energy Physics - Experiment, jet: electroproduction, High Energy Physics - Experiment (hep-ex), production: small-angle, differential cross section: transverse energy, quantum chromodynamics: perturbation theory, info:eu-repo/classification/ddc/530, parton: momentum spectrum, leading logarithm approximation, ZEUS, High Energy Physics; HERA; ZEUS Collaboration; ZEUS BARREL CALORIMETER; COLOR DIPOLE MODEL; CROSS-SECTIONS; DIJET PRODUCTION; GLOBAL ANALYSIS; QCD CASCADES; BREIT FRAME; PARTON DISTRIBUTIONS, effect: higher-order, DESY HERA Stor, electron p: colliding beams, showers: parton, experimental results

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