1. Measurement of azimuthal asymmetries in neutral current deep inelastic scattering at HERA
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M. S. Soares, Pawel Plucinski, R. Walsh, Katsuo Tokushuku, S. Menary, Greg P Heath, V.V. Sosnovtsev, D. Gladkov, N. Brümmer, U. Karshon, J. Rautenberg, T. Tsurugai, Y. Cui, D. Boscherini, N. Coppola, Leszek Adamczyk, Oliver Gutsche, R. Santamarta, W. B. Schmidke, Janusz Chwastowski, Joanne Cole, Francois Corriveau, Y.D. Ri, A. Kotański, M.I. Ferrero, E. Brownson, A. T. Doyle, T. Danielson, V. Roberfroid, I. A. Korzhavina, W. Słomiński, Ulf Behrens, Federico Cindolo, P. Stopa, F. Karstens, C. Horn, B. A. Dolgoshein, Marta Ruspa, E. Ron, Marco Schioppa, A. Everett, P. G. Pelfer, B. Kahle, Roberto Carlin, Alexander Tapper, Fernando Barreiro, Anselmo Margotti, S.I. Suchkov, L.W. Wiggers, Y. Eisenberg, R. Walczak, G. Grzelak, U. Schneekloth, S. Fazio, Roberto Sacchi, A. Ukleja, J. Ciborowski, P.F. Ermolov, U. Stösslein, Shima Shimizu, Marcello Bindi, J. Sztuk, Kenneth Long, G. Bari, Didar Dobur, K. Korcsak-Gorzo, Giovanna Bruni, Claire Gwenlan, Aharon Levy, Tomasz Bold, L. M. Shcheglova, D. Kçira, A. N. Barakbaev, M. Kataoka, J. Standage, O.M. Kind, Giuseppe Iacobucci, B. B. Levchenko, Vincenzo Monaco, J. Łukasik, Richard Hall-Wilton, R.C.E. Devenish, James Ferrando, J. Sutiak, A. Polini, I. Gregor, Costas Foudas, P. Bellan, G. Sartorelli, S. De Pasquale, T. Theedt, J. Ukleja, Y. Iga, B. Löhr, M. Jimenez, Lorenzo Rinaldi, M. Rosin, R. Renner, M. Gil, R. Ingbir, H.G.J.M. Tiecke, F. J. Sciulli, S. Kitamura, N. Pavel, P. Kulinski, J. F. Martin, Zhongliang Ren, J.H. Loizides, A. Galas, Ian Brock, Iwona Grabowska-Bold, A. Pellegrino, T. Matsumoto, Anna Mastroberardino, Amanda Cooper-Sarkar, C. Fry, S. Magill, D. Nicholass, Mark Sutton, Aleksander Filip Żarnecki, A. Keramidas, A.G. Yagües Molina, Ada Solano, V. Adler, S. Limentani, Hartmut Stadie, J. de Favereau, C. Liu, M.C.K. Mattingly, L. S. Durkin, K.J. Ma, Robert Ciesielski, J. Del Peso, J. Fourletova, A. Antonov, G. D'Agostini, R. Hamatsu, Els Koffeman, D. H. Saxon, P. Göttlicher, M. Wang, S. K. Boutle, C.N. Nguyen, A.S. Proskuryakov, G. Watt, T. Y. Ling, C. Zhou, A. Raval, M.A. Bell, H. Salehi, D. Notz, D.S. Zotkin, N. H. Brook, C. D. Catterall, T. W. Jones, K. Wrona, B. Foster, S. Dusini, Gy. Wolf, Robert Klanner, Peter Schleper, A. Bruni, S. Miglioranzi, F. Dal Corso, I. Giller, J. Y. Kim, Yuji Yamazaki, Igor Katkov, S. Patel, Alexander Savin, C. Youngman, Pietro Antonioli, Luisa Cifarelli, L. K. Gladilin, S. Goers, V. Schönberg, P.M. Kooijman, Achim Geiser, Elisabetta Gallo, R. K. Dementiev, A. Bertolin, J. Whyte, L. Zawiejski, K. Wichmann, M. Adamus, M. Turcato, Kunihiro Nagano, Sergei Chekanov, B. Brzozowska, D.D. Reeder, C. Targett-Adams, G. Marini, U. Noor, Dirk-Uwe Bartsch, J. Malka, M. Jüngst, Ben Bylsma, Peter Bussey, M. Wlasenko, H.-P. Jakob, H. Kaji, D. Szuba, A. Longhin, Juan Terron, A.E. Nuncio-Quiroz, Wolfram Dietrich Zeuner, A. Bamberger, Andrea Contin, Jonathan Butterworth, M. Basile, A. Lee, L. Bellagamba, T. Haas, G. Hartner, Enrico Tassi, J. J. Whitmore, E. Hilger, T. Gosau, H. Hartmann, R. Brugnera, B. Musgrave, A. Nigro, S. Antonelli, Marcella Capua, P. Łużniak, W. Dunne, Kerstin Borras, V. A. Kuzmin, S. Yamada, A. Gabareen, Rainer Mankel, N.N. Vlasov, Dong-Chul Son, A. Stifutkin, A.G. Robertson, Mariusz Przybycien, R. Yoshida, M. Corradi, M. Kuze, A. Dossanov, B.Y. Oh, Halina Abramowicz, Danuta Kisielewska, Michele Arneodo, E. Lohrmann, D. Hochman, T. Tawara, B. Kamaluddin, S. Schlenstedt, H. Kowalski, J. Szuba, G. F. Susinno, I. Bloch, Edouard Boos, J. M. Pawlak, N.S. Pokrovskiy, I. Gialas, B.O. Zhautykov, A. Bonato, S. A. Zotkin, A. Garfagnini, E. Paul, Allen Caldwell, S. Fourletov, John Morris, Luis Labarga, G. Aghuzumtsyan, D. Kollar, Zainol Abidin Ibrahim, M. Derrick, T. Tymieniecka, Matthew Wing, U. Samson, K. Wick, John Hart, U. Kötz, Rosario Nania, Jose Repond, I. Rubinsky, Alexander Spiridonov, I. A. Melzer-Pellmann, A. Cottrell, R. J. Nowak, E. Lobodzinska, Giuseppe Barbagli, I. O. Skillicorn, L. Suszycki, W. H. Smith, Thomas Schörner-Sadenius, P. Ryan, Y. Ning, U. Holm, Krzysztof Piotrzkowski, H. Lim, P.B. Straub, S. Bhadra, O. Ota, P.D. Allfrey, S. Kagawa, Claudia Glasman, Luca Stanco, Lev Khein, S. Kananov, I. Abt, C. Büttner, W. Hain, A. Eskreys, Jan Figiel, T. Namsoo, G. Grigorescu, W. A. T. Wan Abdullah, A. Montanari, M. Vázquez, K. Olkiewicz, H. Wolfe, Antonino Zichichi, R. Hori, C. Uribe-Estrada, M. Zambrana, Olga Lukina, L. CIFARELLI S. CHEKANOV, M. DERRICK, S. MAGILL, S. MIGLIORANZI, B. MUSGRAVE, D. NICHOLASS, J. REPOND, R. YOSHIDA M.C.K. MATTINGLY N. PAVEL, A.G. YAGUES MOLINA S. ANTONELLI, P. ANTONIOLI, G. BARI, M. BASILE, L. BELLAGAMBA, M. BINDI, D. BOSCHERINI, A. BRUNI, G. BRUNI, 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. JUNGST, O.M. KIND, E. PAUL, J. RAUTENBERG, R. RENNER, U. SAMSON, V. SCHONBERG, 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. BOLD, I. GRABOWSKA-BOLD, D. KISIELEWSKA, J. LUKASIK, MARIUSZ PRZYBYCIEN, L. SUSZYCKI A. KOTANSKI, W. SLOMINSKI V. ADLER, U. BEHRENS, I. BLOCH, A. BONATO, K. BORRAS, N. COPPOLA, J. FOURLETOVA, A. GEISER, D. GLADKOV, P. GOTTLICHER, I. GREGOR, O. GUTSCHE, T. HAAS, W. HAIN, C. HORN, B. KAHLE, U. KOTZ, H. KOWALSKI, H. LIM, E. LOBODZINSKA, B. LOHR, 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. STOSSLEIN, 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. SCHORNER-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. TERRON, 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.YU. LUKINA, A.S. PROSKURYAKOV, L.M. SHCHEGLOVA, D.S. ZOTKIN, S.A. ZOTKIN I. ABT, C. BUTTNER, A. CALDWELL, D. KOLLAR, W.B. SCHMIDKE, J. SUTIAK G. GRIGORESCU, A. KERAMIDAS, E. KOFFEMAN, P. KOOIJMAN, A. PELLEGRINO, H. TIECKE, M. VAZQUEZ, L. WIGGERS N. BRUMMER, 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. LUZNIAK, 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, and J. WHYTE
- Subjects
INCLUSIVE LEPTOPRODUCTION ,Particle physics ,MONTE-CARLO GENERATOR ,Physics and Astronomy (miscellaneous) ,HERA ,ENERGY-FLOW ,FOS: Physical sciences ,Parton ,01 natural sciences ,High Energy Physics - Experiment ,Nuclear physics ,High Energy Physics - Experiment (hep-ex) ,High Energy Physics ,ZEUS Collaboration ,DESIGN ,0103 physical sciences ,ddc:530 ,010306 general physics ,Nuclear Experiment ,Engineering (miscellaneous) ,CENTRAL TRACKING DETECTOR ,LEPTON-PROTON-SCATTERING ,ZEUS BARREL CALORIMETER ,PARTON DISTRIBUTIONS ,GLOBAL ANALYSIS ,CONSTRUCTION ,Quantum chromodynamics ,Physics ,Neutral current ,010308 nuclear & particles physics ,Scattering ,High Energy Physics::Phenomenology ,Deep inelastic scattering ,Pseudorapidity ,High Energy Physics::Experiment ,Lepton - 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 at HERA. 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., 10 pages, 4 figures, 4 tables
- Published
- 2007