Further studies of isolated photon production with a jet in deep inelastic scattering at HERA
ZEUS Collaboration · Abramowicz, H. · Abt, I. · Adamczyk, L. · Adamus, M. · Aggarwal, R. · Antonelli, S. · Aushev, V. · Aushev, Y. · Behnke, O. · Behrens, U. · Bertolin, A. · Bloch, I. · Brock, I. · Brook, N. H. · Brugnera, R. · Bruni, A. · Bussey, P. J. · Caldwell, A. · Capua, M. · Catterall, C. D. · Chwastowski, J. · Ciborowski, J. · Ciesielski, R. · Cooper-Sarkar, A. M. · Corradi, M. · Dementiev, R. K. · Devenish, R. C. E. · Dusini, S. · Foster, B. · Gach, G. · Gallo, E. · Garfagnini, A. · Geiser, A. · Gizhko, A. · Gladilin, L. K. · Golubkov, Yu. A. · Grzelak, G. · Guzik, M. · Gwenlan, C. · Hlushchenko, O. · Hochman, D. · Hori, R. · Ibrahim, Z. A. · Iga, Y. · Ishitsuka, M. · Jomhari, N. Z. · Kadenko, I. · Kananov, S. · Karshon, U. · Kaur, P. · Kisielewska, D. · Klanner, R. · Klein, U. · Korzhavina, I. A. · Kotański, A. · Kovalchuk, N. · Kowalski, H. · Krupa, B. · Kuprash, O. · Kuze, M. · Levchenko, B. B. · Levy, A. · Lisovyi, M . · Lobodzinska, E. · Löhr, B. · Lohrmann, E. · Longhin, A. · Lukina, O. Yu. · Malka, J. · Mastroberardino, A. · Idris, F. Mohamad · Nasir, N. Mohammad · Myronenko, V. · Nagano, K . · Onishchuk, Yu. · Paul, E. · Perlański, W. · Pokrovskiy, N. S. · Polini, A. · Przybycień, M. · Ruspa, M. · Saxon, D. H. · Schioppa, M. · Schneekloth, U. · Schörner-Sadenius, T. · Shcheglova, L. M. · Shkola, O. · Shyrma, Yu. · Skillicorn, I. O. · Słomiński, W. · Solano, A. · Stanco, L. · Stefaniuk, N. · Stern, A. · Stopa, P. · ietz, J. Sztuk-Damb · Tassi, E. · Tokushuku, K. · Tomaszewska, J. · Tsurugai, T. · Turcato, M. · Turkot, O. · Tymieniecka, T. · Verbytskyi, A. · WanAbdullah, W. A. T. · Wichmann, K. · Wing, M. · Yamada, S. · Yamazaki, Y. · Żarnecki, A. F. · Zawiejski, L. · Zenaiev, O. · Zhautykov, B. O.
الأصل · EN
Isolated photons with high transverse energy have been studied in deep inelastic ep scattering with the ZEUS detector at HERA, using an integrated luminosity of 326 pb⁻¹ in the range of exchanged-photon virtuality 10 - 350 GeV². Outgoing isolated photons with transverse energy 4<Eₜγ< 15 GeV and pseudorapidity -0.7 <ηγ< 0.9 were measured with accompanying jets having transverse energy and pseudorapidity 2.5 <Eₜjet<35 GeV and -1.5<ηjet< 1.8, respectively. Differential cross sections are presented for the following variables: the fraction of the incoming photon energy and momentum that is transferred to the outgoing photon and the leading jet; the fraction of the incoming proton energy transferred to the photon and leading jet; the differences in azimuthal angle and pseudorapidity between the outgoing photon and the leading jet and between the outgoing photon and the scattered electron. Comparisons are made with theoretical predictions: a leading-logarithm Monte Carlo simulation, a next-to-leading-order QCD prediction, and a prediction using the kₜ-factorisation approach.
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