Journal of High Energy Physics (Jan 2018)
Further studies of isolated photon production with a jet in deep inelastic scattering at HERA
- The ZEUS collaboration,
- H. Abramowicz,
- I. Abt,
- L. Adamczyk,
- M. Adamus,
- R. Aggarwal,
- S. Antonelli,
- V. Aushev,
- Y. Aushev,
- O. Behnke,
- U. Behrens,
- A. Bertolin,
- I. Bloch,
- I. Brock,
- N. H. Brook,
- R. Brugnera,
- A. Bruni,
- P. J. Bussey,
- A. Caldwell,
- M. Capua,
- C. D. Catterall,
- J. Chwastowski,
- J. Ciborowski,
- R. Ciesielski,
- A. M. Cooper-Sarkar,
- M. Corradi,
- R. K. Dementiev,
- R. C. E. Devenish,
- S. Dusini,
- B. Foster,
- G. Gach,
- E. Gallo,
- A. Garfagnini,
- A. Geiser,
- A. Gizhko,
- L. K. Gladilin,
- Yu. A. Golubkov,
- G. Grzelak,
- M. Guzik,
- C. Gwenlan,
- O. Hlushchenko,
- D. Hochman,
- R. Hori,
- Z. A. Ibrahim,
- Y. Iga,
- M. Ishitsuka,
- N. Z. Jomhari,
- I. Kadenko,
- S. Kananov,
- U. Karshon,
- P. Kaur,
- D. Kisielewska,
- R. Klanner,
- U. Klein,
- I. A. Korzhavina,
- A. Kotanski,
- N. Kovalchuk,
- H. Kowalski,
- B. Krupa,
- O. Kuprash,
- M. Kuze,
- B. B. Levchenko,
- A. Levy,
- M. Lisovyi,
- E. Lobodzinska,
- B. Löhr,
- E. Lohrmann,
- A. Longhin,
- O. Yu. Lukina,
- J. Malka,
- A. Mastroberardino,
- F. Mohamad Idris,
- N. Mohammad Nasir,
- V. Myronenko,
- K. Nagano,
- Yu. Onishchuk,
- E. Paul,
- W. Perlanski,
- N. S. Pokrovskiy,
- A. Polini,
- M. Przybycien,
- M. Ruspa,
- D. H. Saxon,
- M. Schioppa,
- U. Schneekloth,
- T. Schörner-Sadenius,
- L. M. Shcheglova,
- O. Shkola,
- Yu. Shyrma,
- I. O. Skillicorn,
- W. Slominski,
- A. Solano,
- L. Stanco,
- N. Stefaniuk,
- A. Stern,
- P. Stopa,
- J. Sztuk-Dambietz,
- E. Tassi,
- K. Tokushuku,
- J. Tomaszewska,
- T. Tsurugai,
- M. Turcato,
- O. Turkot,
- T. Tymieniecka,
- A. Verbytskyi,
- W. A. T. Wan Abdullah,
- K. Wichmann,
- M. Wing,
- S. Yamada,
- Y. Yamazaki,
- A. F. Żarnecki,
- L. Zawiejski,
- O. Zenaiev,
- B. O. Zhautykov
Affiliations
- The ZEUS collaboration
- H. Abramowicz
- Raymond and Beverly Sackler Faculty of Exact Sciences, School of Physics, Tel Aviv University
- I. Abt
- Max-Planck-Institut für Physik
- L. Adamczyk
- AGH University of Science and Technology, Faculty of Physics and Applied Computer Science
- M. Adamus
- National Centre for Nuclear Research
- R. Aggarwal
- Panjab University, Department of Physics
- S. Antonelli
- INFN Bologna
- V. Aushev
- Department of Nuclear Physics, National Taras Shevchenko University of Kyiv
- Y. Aushev
- Department of Nuclear Physics, National Taras Shevchenko University of Kyiv
- O. Behnke
- Deutsches Elektronen-Synchrotron DESY
- U. Behrens
- Deutsches Elektronen-Synchrotron DESY
- A. Bertolin
- INFN Padova
- I. Bloch
- Deutsches Elektronen-Synchrotron DESY
- I. Brock
- Physikalisches Institut der Universität Bonn
- N. H. Brook
- Physics and Astronomy Department, University College London
- R. Brugnera
- Dipartimento di Fisica e Astronomia dell’ Università and INFN
- A. Bruni
- INFN Bologna
- P. J. Bussey
- School of Physics and Astronomy, University of Glasgow
- A. Caldwell
- Max-Planck-Institut für Physik
- M. Capua
- Calabria University, Physics Department and INFN
- C. D. Catterall
- Department of Physics, York University
- J. Chwastowski
- The Henryk Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences
- J. Ciborowski
- Faculty of Physics, University of Warsaw
- R. Ciesielski
- Deutsches Elektronen-Synchrotron DESY
- A. M. Cooper-Sarkar
- Department of Physics, University of Oxford
- M. Corradi
- INFN Bologna
- R. K. Dementiev
- Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics
- R. C. E. Devenish
- Department of Physics, University of Oxford
- S. Dusini
- INFN Padova
- B. Foster
- Hamburg University, Institute of Experimental Physics
- G. Gach
- AGH University of Science and Technology, Faculty of Physics and Applied Computer Science
- E. Gallo
- Hamburg University, Institute of Experimental Physics
- A. Garfagnini
- Dipartimento di Fisica e Astronomia dell’ Università and INFN
- A. Geiser
- Deutsches Elektronen-Synchrotron DESY
- A. Gizhko
- Deutsches Elektronen-Synchrotron DESY
- L. K. Gladilin
- Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics
- Yu. A. Golubkov
- Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics
- G. Grzelak
- Faculty of Physics, University of Warsaw
- M. Guzik
- AGH University of Science and Technology, Faculty of Physics and Applied Computer Science
- C. Gwenlan
- Department of Physics, University of Oxford
- O. Hlushchenko
- Department of Nuclear Physics, National Taras Shevchenko University of Kyiv
- D. Hochman
- Department of Particle Physics and Astrophysics, Weizmann Institute
- R. Hori
- Institute of Particle and Nuclear Studies, KEK
- Z. A. Ibrahim
- National Centre for Particle Physics, Universiti Malaya
- Y. Iga
- Polytechnic University
- M. Ishitsuka
- Department of Physics, Tokyo Institute of Technology
- N. Z. Jomhari
- National Centre for Particle Physics, Universiti Malaya
- I. Kadenko
- Department of Nuclear Physics, National Taras Shevchenko University of Kyiv
- S. Kananov
- Raymond and Beverly Sackler Faculty of Exact Sciences, School of Physics, Tel Aviv University
- U. Karshon
- Department of Particle Physics and Astrophysics, Weizmann Institute
- P. Kaur
- Panjab University, Department of Physics
- D. Kisielewska
- AGH University of Science and Technology, Faculty of Physics and Applied Computer Science
- R. Klanner
- Hamburg University, Institute of Experimental Physics
- U. Klein
- Deutsches Elektronen-Synchrotron DESY
- I. A. Korzhavina
- Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics
- A. Kotanski
- Department of Physics, Jagellonian University
- N. Kovalchuk
- Hamburg University, Institute of Experimental Physics
- H. Kowalski
- Deutsches Elektronen-Synchrotron DESY
- B. Krupa
- The Henryk Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences
- O. Kuprash
- Deutsches Elektronen-Synchrotron DESY
- M. Kuze
- Department of Physics, Tokyo Institute of Technology
- B. B. Levchenko
- Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics
- A. Levy
- Raymond and Beverly Sackler Faculty of Exact Sciences, School of Physics, Tel Aviv University
- M. Lisovyi
- Deutsches Elektronen-Synchrotron DESY
- E. Lobodzinska
- Deutsches Elektronen-Synchrotron DESY
- B. Löhr
- Deutsches Elektronen-Synchrotron DESY
- E. Lohrmann
- Hamburg University, Institute of Experimental Physics
- A. Longhin
- INFN Padova
- O. Yu. Lukina
- Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics
- J. Malka
- Deutsches Elektronen-Synchrotron DESY
- A. Mastroberardino
- Calabria University, Physics Department and INFN
- F. Mohamad Idris
- National Centre for Particle Physics, Universiti Malaya
- N. Mohammad Nasir
- National Centre for Particle Physics, Universiti Malaya
- V. Myronenko
- Deutsches Elektronen-Synchrotron DESY
- K. Nagano
- Institute of Particle and Nuclear Studies, KEK
- Yu. Onishchuk
- Department of Nuclear Physics, National Taras Shevchenko University of Kyiv
- E. Paul
- Physikalisches Institut der Universität Bonn
- W. Perlanski
- Faculty of Physics, University of Warsaw
- N. S. Pokrovskiy
- Institute of Physics and Technology of Ministry of Education and Science of Kazakhstan
- A. Polini
- INFN Bologna
- M. Przybycien
- AGH University of Science and Technology, Faculty of Physics and Applied Computer Science
- M. Ruspa
- Università del Piemonte Orientale, Novara, and INFN
- D. H. Saxon
- School of Physics and Astronomy, University of Glasgow
- M. Schioppa
- Calabria University, Physics Department and INFN
- U. Schneekloth
- Deutsches Elektronen-Synchrotron DESY
- T. Schörner-Sadenius
- Deutsches Elektronen-Synchrotron DESY
- L. M. Shcheglova
- Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics
- O. Shkola
- Department of Nuclear Physics, National Taras Shevchenko University of Kyiv
- Yu. Shyrma
- Institute for Nuclear Research, National Academy of Sciences
- I. O. Skillicorn
- School of Physics and Astronomy, University of Glasgow
- W. Slominski
- Department of Physics, Jagellonian University
- A. Solano
- Università di Torino and INFN
- L. Stanco
- INFN Padova
- N. Stefaniuk
- Deutsches Elektronen-Synchrotron DESY
- A. Stern
- Raymond and Beverly Sackler Faculty of Exact Sciences, School of Physics, Tel Aviv University
- P. Stopa
- The Henryk Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences
- J. Sztuk-Dambietz
- Hamburg University, Institute of Experimental Physics
- E. Tassi
- Calabria University, Physics Department and INFN
- K. Tokushuku
- Institute of Particle and Nuclear Studies, KEK
- J. Tomaszewska
- Faculty of Physics, University of Warsaw
- T. Tsurugai
- Meiji Gakuin University, Faculty of General Education
- M. Turcato
- Hamburg University, Institute of Experimental Physics
- O. Turkot
- Deutsches Elektronen-Synchrotron DESY
- T. Tymieniecka
- National Centre for Nuclear Research
- A. Verbytskyi
- Max-Planck-Institut für Physik
- W. A. T. Wan Abdullah
- National Centre for Particle Physics, Universiti Malaya
- K. Wichmann
- Deutsches Elektronen-Synchrotron DESY
- M. Wing
- Physics and Astronomy Department, University College London
- S. Yamada
- Institute of Particle and Nuclear Studies, KEK
- Y. Yamazaki
- Institute of Particle and Nuclear Studies, KEK
- A. F. Żarnecki
- Faculty of Physics, University of Warsaw
- L. Zawiejski
- The Henryk Niewodniczanski Institute of Nuclear Physics, Polish Academy of Sciences
- O. Zenaiev
- Deutsches Elektronen-Synchrotron DESY
- B. O. Zhautykov
- Institute of Physics and Technology of Ministry of Education and Science of Kazakhstan
- DOI
- https://doi.org/10.1007/JHEP01(2018)032
- Journal volume & issue
-
Vol. 2018,
no. 1
pp. 1 – 30
Abstract
Abstract 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 < E T γ < 15 GeV and pseudorapidity − 0.7 < η γ < 0.9 were measured with accompanying jets having transverse energy and pseudorapidity 2.5 < E T jet < 35 GeV and −1.5 < η jet < 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 k T -factorisation approach.
Keywords
