Measurement of azimuthal asymmetries in neutral current deep inelastic scattering at HERA

S. Chekanov*, M. Derrick, S. Magill, S. Miglioranzi, B. Musgrave, D. Nicholass, J. Repond, R. Yoshida, M. C.K. Mattingly, N. Pavel, A. G. Yagües Molina, S. Antonelli, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, M. Bindi, D. Boscherini, A. Bruni, G. BruniL. Cifarelli, F. Cindolo, A. Contin, M. Corradi, S. De Pasquale, G. Iacobucci, A. Margotti, R. Nania, A. Polini, L. Rinaldi, G. Sartorelli, A. Zichichi, G. Aghuzumtsyan, D. Bartsch, I. Brock, S. Goers, H. Hartmann, E. Hilger, H. P. Jakob, M. Jüngst, O. M. Kind, E. Paul, J. Rautenberg, R. Renner, U. Samson, V. Schönberg, M. Wang, M. Wlasenko, N. H. Brook, G. P. Heath, J. D. Morris, T. Namsoo, M. Capua, S. Fazio, A. Mastroberardino, M. Schioppa, G. Susinno, E. Tassi, J. Y. Kim, K. J. Ma, Z. A. Ibrahim, B. Kamaluddin, W. A.T. Wan Abdullah, Y. Ning, Z. Ren, F. Sciulli, J. Chwastowski, A. Eskreys, J. Figiel, A. Galas, M. Gil, K. Olkiewicz, P. Stopa, L. Zawiejski, L. Adamczyk, T. Bołd, I. Grabowska-Bołd, D. Kisielewska, J. Łukasik, M. Przybycień, L. Suszycki, A. Kotański, W. Słomiński, V. Adler, U. Behrens, I. Bloch, A. Bonato, K. Borras, N. Coppola, J. Fourletova, A. Geiser, D. Gladkov, P. Göttlicher, I. Gregor, O. Gutsche, T. Haas, W. Hain, C. Horn, B. Kahle, U. Kötz, H. Kowalski, H. Lim, E. Lobodzinska, B. Löhr, R. Mankel, I. A. Melzer-Pellmann, A. Montanari, C. N. Nguyen, D. Notz, A. E. Nuncio-Quiroz, R. Santamarta, U. Schneekloth, A. Spiridonov, H. Stadie, U. Stösslein, D. Szuba, J. Szuba, T. Theedt, G. Watt, G. Wolf, K. Wrona, C. Youngman, W. Zeuner, S. Schlenstedt, G. Barbagli, E. Gallo, P. G. Pelfer, A. Bamberger, D. Dobur, F. Karstens, N. N. Vlasov, P. J. Bussey, A. T. Doyle, W. Dunne, J. Ferrando, D. H. Saxon, I. O. Skillicorn, I. Gialas, T. Gosau, U. Holm, R. Klanner, E. Lohrmann, H. Salehi, P. Schleper, T. Schörner-Sadenius, J. Sztuk, K. Wichmann, K. Wick, C. Foudas, C. Fry, K. R. Long, A. D. Tapper, M. Kataoka, T. Matsumoto, K. Nagano, K. Tokushuku, S. Yamada, Y. Yamazaki, A. N. Barakbaev, E. G. Boos, A. Dossanov, N. S. Pokrovskiy, B. O. Zhautykov, D. Son, J. De Favereau, K. Piotrzkowski, F. Barreiro, C. Glasman, M. Jimenez, L. Labarga, J. Del Peso, E. Ron, J. Terrón, M. Zambrana, F. Corriveau, C. Liu, R. Walsh, C. Zhou, T. Tsurugai, A. Antonov, B. A. Dolgoshein, I. Rubinsky, V. Sosnovtsev, A. Stifutkin, S. Suchkov, R. K. Dementiev, P. F. Ermolov, L. K. Gladilin, I. I. Katkov, L. A. Khein, I. A. Korzhavina, V. A. Kuzmin, B. B. Levchenko, O. Y. Lukina, A. S. Proskuryakov, L. M. Shcheglova, D. S. Zotkin, S. A. Zotkin, I. Abt, C. Büttner, A. Caldwell, D. Kollar, W. B. Schmidke, J. Sutiak, G. Grigorescu, A. Keramidas, E. Koffeman, P. Kooijman, A. Pellegrino, H. Tiecke, M. Vázquez, L. Wiggers, N. Brümmer, B. Bylsma, L. S. Durkin, A. Lee, T. Y. Ling, P. D. Allfrey, M. A. Bell, A. M. Cooper-Sarkar, A. Cottrell, R. C.E. Devenish, B. Foster, C. Gwenlan, K. Korcsak-Gorzo, S. Patel, V. Roberfroid, A. Robertson, P. B. Straub, C. Uribe-Estrada, R. Walczak, P. Bellan, A. Bertolin, R. Brugnera, R. Carlin, R. Ciesielski, F. Dal Corso, S. Dusini, A. Garfagnini, S. Limentani, A. Longhin, L. Stanco, M. Turcato, B. Y. Oh, A. Raval, J. Ukleja, J. J. Whitmore, Y. Iga, G. D'Agostini, G. Marini, A. Nigro, J. E. Cole, J. C. Hart, H. Abramowicz, A. Gabareen, R. Ingbir, S. Kananov, A. Levy, M. Kuze, R. Hori, S. Kagawa, S. Shimizu, T. Tawara, R. Hamatsu, H. Kaji, S. Kitamura, O. Ota, Y. D. Ri, M. I. Ferrero, V. Monaco, R. Sacchi, A. Solano, M. Arneodo, M. Ruspa, S. Fourletov, J. F. Martin, S. K. Boutle, J. M. Butterworth, R. Hall-Wilton, T. W. Jones, J. H. Loizides, M. R. Sutton, C. Targett-Adams, M. Wing, B. Brzozowska, J. Ciborowski, G. Grzelak, P. Kulinski, P. Łuzniak, J. Malka, R. J. Nowak, J. M. Pawlak, T. Tymieniecka, A. Ukleja, A. F. Zarnecki, M. Adamus, P. Plucinski, Y. Eisenberg, I. Giller, D. Hochman, U. Karshon, M. Rosin, E. Brownson, T. Danielson, A. Everett, D. Kcira, D. D. Reeder, P. Ryan, A. A. Savin, W. H. Smith, H. Wolfe, S. Bhadra, C. D. Catterall, Y. Cui, G. Hartner, S. Menary, U. Noor, M. Soares, J. Standage, J. Whyte

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

The distribution of the azimuthal angle of charged and neutral hadrons relative to the lepton plane has been studied for neutral current deep inelastic ep scattering using an integrated luminosity of 45 pb-1 taken with the ZEUS detector. The kinematic range is 100<Q2<8000 GeV 2, 0.2<y<0.8 and 0.01<x<0.1 where Q2 is the virtuality of the exchanged boson, y is the inelasticity and x is the Bjorken variable. The measurements were made in the hadronic centre-of-mass system. The analysis exploits the energy-flow method, which allows the measurement to be made over a larger range of pseudorapidity compared to previous results. The dependence of the moments of the azimuthal distributions on the pseudorapidity and minimum transverse energy of the final-state hadrons are presented. Although the predictions from next-to-leading-order QCD describe the data better than do the Monte Carlo models incorporating leading-logarithm parton showers, they still fail to describe the magnitude of the asymmetries. This suggests that higher-order calculations may be necessary to describe these data.

Original languageEnglish
Pages (from-to)289-299
Number of pages11
JournalEuropean Physical Journal C
Volume51
Issue number2
DOIs
StatePublished - Jul 2007

Funding

FundersFunder number
Science and Technology Facilities CouncilPP/E000452/1
Science and Technology Facilities Council

    Fingerprint

    Dive into the research topics of 'Measurement of azimuthal asymmetries in neutral current deep inelastic scattering at HERA'. Together they form a unique fingerprint.

    Cite this