Professor Amanda Cooper-Sarkar: Publications

Scaled momentum distributions of charged particles in dijet photoproduction at HERA

Journal of High Energy Physics 2009:8 (2009)

Authors:

O Behnke, J Behr, U Behrens, C Blohm, K Borras, D Bot, R Ciesielski, N Coppola, S Fang, A Geiser, P Gölttlicher, J Grebenyuk, I Gregor, T Haas, W Hain, A Hüttmann, F Januschek, B Kahle, II Katkov, U Klein, U Kötz, H Kowalski, M Lisovyi, E Lobodzinska, B Löhr, R Mankel, IA Melzer-Pellmann, S Miglioranzi, A Montanari, T Namsoo, D Notz, A Parenti, P Roloff, I Rubinsky, U Schneekloth, A Spiridonov, D Szuba, J Szuba, T Theedt, J Tomaszewska, G Wolf, K Wrona, AG Yagües-Molina, C Youngman, W Zeuner, S Chekanov, M Derrick, S Magill, B Musgrave, D Nicholass, J Repond, R Yoshida, MCK Mattingly, P Antonioli, G Bari, L Bellagamba, D Boscherini, A Bruni, G Bruni, F Cindolo, M Corradi, G Iacobucci, A Margotti, R Nania, A Polini, S Antonelli, M Basile, M Bindi, L Cifarelli, A Contin, S De Pasquale, G Sartorelli, A Zichichi, D Bartsch, I Brock, H Hartmann, E Hilger, HP Jakob, M Jüngst, AE Nuncio-Quiroz, E Paul, U Samson, V Schönberg, R Shehzadi, M Wlasenko, NH Brook, GP Heath, JD Morris, M Kaur, P Kaur, I Singh, M Capua, S Fazio, A Mastroberardino, M Schioppa, G Susinno, E Tassi, JY Kim, ZA Ibrahim, F Mohamad Idris

Abstract:

The scaled momentum distributions of charged particles in jets have been measured for dijet photoproduction with the ZEUS detector at HERA using an integrated luminosity of 359 pb-1. The distributions are compared to predictions based on perturbative QCD carried out in the framework of the modified leading-logarithmic approximation (MLLA) and assuming local parton-hadron duality (LPHD). The universal MLLA scale, Λeff, and the LPHD parameter, κch, are extracted. © SISSA 2009.

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Measurement of J/psi photoproduction at large momentum transfer at HERA

ArXiv 0910.1235 (2009)

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Subjet distributions in deep inelastic scattering at HERA

European Physical Journal C 63:4 (2009) 527-548

Authors:

Abstract:

Subjet distributions were measured in neutral current deep inelastic ep scattering with the ZEUS detector at HERA using an integrated luminosity of 81.7 pb-1. Jets were identified using the k T cluster algorithm in the laboratory frame. Subjets were defined as jet-like substructures identified by a reapplication of the cluster algorithm at a smaller value of the resolution parameter ycut. Measurements of subjet distributions for jets with exactly two subjets for ycut=0.05 are presented as functions of observables sensitive to the pattern of parton radiation and to the colour coherence between the initial and final states. Perturbative QCD predictions give an adequate description of the data. © 2009 Springer-Verlag / Società Italiana di Fisica.

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Measurement of D (+/-) and D (0) production in deep inelastic scattering using a lifetime tag at HERA

EUR PHYS J C 63:3 (2009) 171-188

Authors:

S Chekanov, M Derrick, S Magill, B Musgrave, D Nicholass, J Repond, R Yoshida, MCK Mattingly, P Antonioli, G Bari, L Bellagamba, D Boscherini, A Bruni, G Bruni, F Cindolo, M Corradi, G Iacobucci, A Margotti, R Nania, A Polini, S Antonelli, M Basile, M Bindi, L Cifarelli, A Contin, S De Pasquale, G Sartorelli, A Zichichi, D Bartsch, I Brock, H Hartmann, E Hilger, HP Jakob, M Jungst, AE Nuncio-Quiroz, E Paul, U Samson, V Schonberg, R Shehzadi, M Wlasenko, NH Brook, GP Heath, JD Morris, M Kaur, P Kaur, I Singh, M Capua, S Fazio, A Mastroberardino, M Schioppa, G Susinno, E Tassi, JY Kim, ZA Ibrahim, F Idris, B Kamaluddin, WATW Abdullah, Y Ning, Z Ren, F Sciulli, J Chwastowski, A Eskreys, J Figiel, A Galas, K Olkiewicz, B Pawlik, P Stopa, L Zawiejski, L Adamczyk, T Bold, I Grabowska-Bold, D Kisielewska, J Laukasik, M Przybycien, L Suszycki, A Kotanski, W Sominski, O Behnke, U Behrens, C Blohm, A Bonato, K Borras, D Bot, R Ciesielski, N Coppola, S Fang, J Fourletova, A Geiser, P Gottlicher, J Grebenyuk, I Gregor, T Haas, W Hain, A Huttmann, F Januschek, B Kahle, II Katkov, U Klein, U Kotz, H Kowalski, M Lisovyi, E Lobodzinska, B Lohr, R Mankel, IA Melzer-Pellmann, S Miglioranzi, A Montanari, T Namsoo, D Notz, A Parenti, L Rinaldi, P Roloff, I Rubinsky, U Schneekloth, A Spiridonov, D Szuba, J Szuba, T Theedt, J Ukleja, G Wolf, K Wrona, AGY Molina, C Youngman, W Zeuner, V Drugakov, W Lohmann, S Schlenstedt, G Barbagli, E Gallo, PG Pelfer, A Bamberger, D Dobur, F Karstens, NN Vlasov, PJ Bussey, AT Doyle, W Dunne, M Forrest, M Rosin, DH Saxon, IO Skillicorn, I Gialas, K Papageorgiu, U Holm, R Klanner, E Lohrmann, H Perrey, P Schleper, T Schorner-Sadenius, J Sztuk, H Stadie, M Turcato, C Foudas, C Fry, KR Long, AD Tapper, T Matsumoto, K Nagano, K Tokushuku, S Yamada, Y Yamazaki, AN Barakbaev, EG Boos, NS Pokrovskiy, BO Zhautykov, V Aushev, O Bachynska, M Borodin, I Kadenko, A Kozulia, V Libov, D Lontkovskyi, I Makarenko, I Sorokin, A Verbytskyi, O Volynets, D Son, J de Favereau, K Piotrzkowski, F Barreiro, C Glasman, M Jimenez, L Labarga, J del Peso, E Ron, M Soares, J Terron, C Uribe-Estrada, M Zambrana, F Corriveau, C Liu, J Schwartz, R Walsh, C Zhou, T Tsurugai, A Antonov, BA Dolgoshein, D Gladkov, V Sosnovtsev, A Stifutkin, S Suchkov, RK Dementiev, PF Ermolov, LK Gladilin, YA Golubkov, LA Khein, IA Korzhavina, VA Kuzmin, BB Levchenko, OY Lukina, AS Proskuryakov, LM Shcheglova, DS Zotkin, I Abt, A Caldwell, D Kollar, B Reisert, WB Schmidke, G Grigorescu, A Keramidas, E Koffeman, P Kooijman, A Pellegrino, H Tiecke, M Vazquez, L Wiggers, N Brummer, B Bylsma, LS Durkin, A Lee, TY Ling, PD Allfrey, MA Bell, AM Cooper-Sarkar, RCE Devenish, J Ferrando, B Foster, C Gwenlan, K Horton, K Oliver, A Robertson, R Walczak, A Bertolin, F Dal Corso, S Dusini, A Longhin, L Stanco, P Bellan, R Brugnera, R Carlin, A Garfagnini, S Limentani, BY Oh, A Raval, JJ Whitmore, Y Iga, G D'Agostini, G Marini, A Nigro, JE Cole, JC Hart, H Abramowicz, R Ingbir, S Kananov, A Levy, A Stern, M Kuze, J Maeda, R Hori, S Kagawa, N Okazaki, S Shimizu, T Tawara, R Hamatsu, H Kaji, S Kitamura, O Ota, YD Ri, M Costa, MI Ferrero, V Monaco, R Sacchi, V Sola, A Solano, M Arneodo, M Ruspa, S Fourletov, JF Martin, TP Stewart, SK Boutle, JM Butterworth, R Hall-Wilton, TW Jones, JH Loizides, MR Sutton, M Wing, B Brzozowska, J Ciborowski, G Grzelak, P Kulinski, P Luzniak, J Malka, RJ Nowak, JM Pawlak, W Perlanski, T Tymieniecka, AF Zarnecki, M Adamus, P Plucinski, A Ukleja, Y Eisenberg, D Hochman, U Karshon, E Brownson, DD Reeder, AA Savin, WH Smith, H Wolfe, S Bhadra, CD Catterall, Y Cui, G Hartner, S Menary, U Noor, J Standage, J Whyte, ZEUS Collaboration

Abstract:

The production of D-+/-- and D-0-mesons has been measured with the ZEUS detector at HERA using an integrated luminosity of 133.6 pb(-1). The measurements cover the kinematic range 5 < Q(2) < 1000 GeV2, 0.02 < y < 0.7, 1.5 < p(T)(D) < 15 GeV and |eta(D)| < 1.6. Combinatorial background to the D-meson signals is reduced by using the ZEUS microvertex detector to reconstruct displaced secondary vertices. Production cross sections are compared with the predictions of next-to-leading-order QCD, which is found to describe the data well. Measurements are extrapolated to the full kinematic phase space in order to obtain the open-charm contribution, F-2(c (c) over bar), to the proton structure function, F-2.

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Measurement of isolated photon production in deep inelastic ep scattering

ArXiv 0909.4223 (2009)

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Professor Amanda Cooper-Sarkar

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Sub department

Scaled momentum distributions of charged particles in dijet photoproduction at HERA

Authors:

Abstract:

Measurement of J/psi photoproduction at large momentum transfer at HERA

Subjet distributions in deep inelastic scattering at HERA

Authors:

Abstract:

Measurement of D (+/-) and D (0) production in deep inelastic scattering using a lifetime tag at HERA

Authors:

Abstract:

Measurement of isolated photon production in deep inelastic ep scattering

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Professor Amanda Cooper-Sarkar

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Scaled momentum distributions of charged particles in dijet photoproduction at HERA

Authors:

Abstract:

Measurement of J/psi photoproduction at large momentum transfer at HERA

Subjet distributions in deep inelastic scattering at HERA

Authors:

Abstract:

Measurement of D (+/-) and D (0) production in deep inelastic scattering using a lifetime tag at HERA

Authors:

Abstract:

Measurement of isolated photon production in deep inelastic ep scattering