Measurement of neutral current e±p cross sections at high Bjorken x with the ZEUS detector MEASUREMENT of NEUTRAL CURRENT e±p CROSS ... H. ABRAMOWICZ et al.

H. Abramowicz*, I. Abt, L. Adamczyk, M. Adamus, R. Aggarwal, S. Antonelli, O. Arslan, V. Aushev, Y. Aushev, O. Bachynska, A. N. Barakbaev, N. Bartosik, O. Behnke, J. Behr, U. Behrens, A. Bertolin, S. Bhadra, I. Bloch, V. Bokhonov, E. G. BoosK. Borras, I. Brock, R. Brugnera, A. Bruni, B. Brzozowska, P. J. Bussey, A. Caldwell, M. Capua, C. D. Catterall, J. Chwastowski, J. Ciborowski, R. Ciesielski, A. M. Cooper-Sarkar, M. Corradi, F. Corriveau, G. D'Agostini, R. K. Dementiev, R. C.E. Devenish, G. Dolinska, V. Drugakov, S. Dusini, J. Ferrando, J. Figiel, B. Foster, G. Gach, A. Garfagnini, A. Geiser, A. Gizhko, L. K. Gladilin, O. Gogota, Yu A. Golubkov, J. Grebenyuk, I. Gregor, G. Grzelak, O. Gueta, M. Guzik, W. Hain, G. Hartner, D. Hochman, R. Hori, Z. A. Ibrahim, Y. Iga, M. Ishitsuka, A. Iudin, F. Januschek, I. Kadenko, S. Kananov, T. Kanno, U. Karshon, M. Kaur, P. Kaur, L. A. Khein, D. Kisielewska, R. Klanner, U. Klein, N. Kondrashova, O. Kononenko, Ie Korol, I. A. Korzhavina, A. Kotański, U. Kötz, N. Kovalchuk, H. Kowalski, O. Kuprash, M. Kuze, B. B. Levchenko, A. Levy, V. Libov, S. Limentani, M. Lisovyi, E. Lobodzinska, W. Lohmann, B. Löhr, E. Lohrmann, A. Longhin, D. Lontkovskyi, O. Yu Lukina, J. Maeda, I. Makarenko, J. Malka, J. F. Martin, S. Mergelmeyer, F. Mohamad Idris, K. Mujkic, V. Myronenko, K. Nagano, A. Nigro, T. Nobe, D. Notz, R. J. Nowak, K. Olkiewicz, Yu Onishchuk, E. Paul, W. Perlański, H. Perrey, N. S. Pokrovskiy, A. S. Proskuryakov, M. Przybycień, A. Raval, P. Roloff, I. Rubinsky, M. Ruspa, V. Samojlov, D. H. Saxon, M. Schioppa, W. B. Schmidke, U. Schneekloth, T. Schörner-Sadenius, J. Schwartz, L. M. Shcheglova, R. Shevchenko, O. Shkola, I. Singh, I. O. Skillicorn, W. Słomiński, V. Sola, A. Solano, A. Spiridonov, L. Stanco, N. Stefaniuk, A. Stern, T. P. Stewart, P. Stopa, J. Sztuk-Dambietz, D. Szuba, J. Szuba, E. Tassi, T. Temiraliev, K. Tokushuku, J. Tomaszewska, A. Trofymov, V. Trusov, T. Tsurugai, M. Turcato, O. Turkot, T. Tymieniecka, A. Verbytskyi, O. Viazlo, R. Walczak, W. A.T. Wan Abdullah, K. Wichmann, M. Wing, G. Wolf, S. Yamada, Y. Yamazaki, N. Zakharchuk, A. F. Zarnecki, L. Zawiejski, O. Zenaiev, B. O. Zhautykov, N. Zhmak, D. S. Zotkin

*Corresponding author for this work

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Abstract

The neutral current e±p cross section has been measured up to values of Bjorken x≅1 with the ZEUS detector at HERA using an integrated luminosity of 187pb-1 of e-p and 142pb-1 of e+p collisions at s=318GeV. Differential cross sections in x and Q2, the exchanged boson virtuality, are presented for Q2≥725GeV2. An improved reconstruction method and greatly increased amount of data allows a finer binning in the high-x region of the neutral current cross section and leads to a measurement with much improved precision compared to a similar earlier analysis. The measurements are compared to Standard Model expectations based on a variety of recent parton distribution functions.

Original languageEnglish
Article number072007
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume89
Issue number7
DOIs
StatePublished - 8 Apr 2014

Funding

FundersFunder number
Science and Technology Facilities CouncilST/M001415/1, ST/H001026/1, ST/K001426/1, ST/K00137X/1, ST/H001026/2
Science and Technology Facilities Council

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