Scaled momentum spectra in deep inelastic scattering at HERA

Abramowicz, H. and Abt, I. and Adamczyk, L. and Adamus, M. and Antonelli, S. and Antonioli, P. and Antonov, A. and Arneodo, M. and Aushev, V. and Aushev, Y. and Bachynska, O. and Bamberger, A. and Barakbaev, A.N. and Barbagli, G. and Bari, G. and Barreiro, F. and Bartsch, D. and Basile, M. and Behnke, O. and Behr, J. and Behrens, U. and Bellagamba, L. and Bertolin, A. and Bhadra, S. and Bindi, M. and Blohm, C. and Bold, T. and Boos, E.G. and Borodin, M. and Borras, K. and Boscherini, D. and Bot, D. and Boutle, S.K. and Brock, I. and Brownson, E. and Brugnera, R. and Bruemmer, N. and Bruni, A. and Bruni, G. and Brzozowska, B. and Bussey, P.J. and Butterworth, J.M. and Bylsma, B. and Caldwell, A. and Capua, M. and Carlin, R. and Catterall, C.D. and Chekanov, S. and Chwastowski, J. and Ciborowski, J. and Ciesielski, R. and Cifarelli, L. and Cindolo, F. and Contin, A. and Cooper-Sarkar, A.M. and Coppola, N. and Corradi, M. and Corriveau, F. and Costa, M. and D'Agostini, G. and Dal Corso, F. and de Favereau, J. and del Peso, J. and Dementiev, R.K. and De Pasquale, S. and Derrick, M. and Devenish, R.C.E. and Dobur, D. and Dolgoshein, B.A. and Doyle, A.T. and Drugakov, V. and Durkin, L.S. and Dusini, S. and Eisenberg, Y. and Ermolov, P.F. and Eskreys, A. and Fang, S. and Fazio, S. and Ferrando, J. and Ferrero, M.I. and Figiel, J. and Forrest, M. and Fourletov, S. and Galas, A. and Gallo, E. and Garfagnini, A. and Geiser, A. and Gialas, I. and Gladilin, L.K. and Gladkov, D. and Glasman, C. and Gogota, O. and Golubkov, Y.A. and Goettlicher, P. and Grabowska-Bold, I. and Grebenyuk, J. and Gregor, I. and Grigorescu, G. and Grzelak, G. and Gwenlan, C. and Haas, T. and Hain, W. and Hamatsu, R. and Hart, J.C. and Hartmann, H. and Hartner, G. and Hilger, E. and Hochman, D. and Holm, U. and Hori, R. and Horton, K. and Huettmann, A. and Ibrahim, Z.A. and Iga, Y. and Ingbir, R. and Ishitsuka, M. and Jakob, H.P. and Januschek, F. and Jimenez, M. and Jones, T.W. and Juengst, M. and Kadenko, I. and Kahle, B. and Kamaluddin, B. and Kananov, S. and Kanno, T. and Karshon, U. and Karstens, F. and Katkov, I.I. and Kaur, M. and Kaur, P. and Keramidas, A. and Khein, L.A. and Kim, J.Y. and Kisielewska, D. and Kitamura, S. and Klanner, R. and Klein, U. and Koffeman, E. and Kollar, D. and Kooijman, P. and Korol, I. and Kotanski, A. and Koetz, U. and Kowalski, H. and Kulinski, P. and Kuprash, O. and Kuze, M. and Kuzmin, V.A. and Lee, A. and Levchenko, B.B. and Levy, A. and Libov, V. and Limentani, S. and Ling, T.Y. and Lisovyi, M. and Lohmann, W. and Loehr, B. and Lohrmann, E. and Loizides, J.H. and Long, K.R. and Longhin, A. and Lontkovskyi, D. and Lukasik, J. and Lukina, O.Y. and Luzniak, P. and Maeda, J. and Magill, S. and Makarenko, I. and Malka, J. and Mankel, R. and Margotti, A. and Marini, G. and Martin, J.F. and Mastroberardino, A. and Matsumoto, T. and Mattingly, M.C.K. and Idris, F.M. and Monaco, V. and Montanari, A. and Morris, J.D. and Musgrave, B. and Nagano, K. and Namsoo, T. and Nania, R. and Nicholass, D. and Nigro, A. and Ning, Y. and Noor, U. and Notz, D. and Nowak, R.J. and Oh, B.Y. and Okazaki, N. and Oliver, K. and Olkiewicz, K. and Ota, O. and Papageorgiu, K. and Paul, E. and Pawlak, J.M. and Pawlik, B. and Pelfer, P.G. and Pellegrino, A. and Perlanski, W. and Perrey, H. and Piotrzkowski, K. and Plucinski, P. and Pokrovskiy, N.S. and Polini, A. and Proskuryakov, A.S. and Raval, A. and Reeder, D.D. and Reisert, B. and Ren, Z. and Ri, Y.D. and Robertson, A. and Roloff, P. and Ron, E. and Rubinsky, I. and Ruspa, M. and Sacchi, R. and Salii, A. and Samson, U. and Sartorelli, G. and Savin, A.A. and Saxon, D.H. and Schioppa, M. and Schleper, P. and Schmidke, W.B. and Schonberg, V. and Schwartz, J. and Sciulli, F. and Shcheglova, L.M. and Shehzadi, R. and Shimizu, S. and Singh, I. and Skillicorn, I.O. and Slominski, W. and Smith, W.H. and Sola, V. and Solano, A. and Solomin, A. and Son, D. and Sosnovtsev, V. and Spiridonov, A. and Stadie, H. and Stanco, L. and Stern, A. and Stewart, T.P. and Stifutkin, A. and Stopa, P. and Suchkov, S. and Susinno, G. and Suszycki, L. and Sztuk, J. and Szuba, D. and Szuba, J. and Tapper, A.D. and Tassi, E. and Terron, J. and Theedt, T. and Tiecke, H. and Tokushuku, K. and Tomalak, O. and Tomaszewska, J. and Tsurugai, T. and Turcato, M. and Tymieniecka, T. and Vazquez, M. and Verbytskyi, A. and Viazlo, V. and Vlasov, N.N. and Volynets, O. and Walczak, R. and Abdullah, W.A.T.W. and Whitmore, J.J. and Whyte, J. and Wing, M. and Wlasenko, M. and Wolf, G. and Wolfe, H. and Wrona, K. and Yamada, S. and Yamazaki, Y. and Yoshida, R. and Youngman, C. and Zarnecki, A.F. and Zenaiev, O. and Zhautykov, B.O. and Zhmak, N. and Zhou, C. and Zichichi, A. and Zolko, M. and Zotkin, D.S. and Collaboration, ZEUS (2010) Scaled momentum spectra in deep inelastic scattering at HERA. Journal of High Energy Physics (6).

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Abstract

Charged particle production has been studied in neutral current deep inelastic ep scattering with the ZEUS detector at HERA using an integrated luminosity of 0.44 fb(-1). Distributions of scaled momenta in the Breit frame are presented for particles in the current fragmentation region. The evolution of these spectra with the photon virtuality, Q(2), is described in the kinematic region 10 < Q(2) < 41000 Ge V-2. Next-to-leading-order and modified leading-log-approximation QCD calculations as well as predictions from Monte Carlo models are compared to the data. The results are also compared to e(+)e(-) annihilation data. The dependences of the pseudorapidity distribution of the particles on Q(2) and on the energy in the gamma p system, W, are presented and interpreted in the context of the hypothesis of limiting fragmentation.

Item Type: Article
Uncontrolled Keywords: Lepton-Nucleon Scattering
Subjects: Q Science > Q Science (General)
T Technology > T Technology (General)
Depositing User: Mr Faizal 2
Date Deposited: 21 Apr 2015 01:24
Last Modified: 21 Apr 2015 01:24
URI: http://eprints.um.edu.my/id/eprint/13368

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