Measurement of D photoproduction at three different centre-of-mass energies at HERA

  • The ZEUS collaboration
  • H. Abramowicz
  • I. Abt
  • L. Adamczyk
  • M. Adamus
  • R. Aggarwal
  • S. Antonelli
  • O. Arslan
  • V. Aushev
  • Y. Aushev
  • O. Bachynska
  • A. N. Barakbaev
  • N. Bartosik
  • O. Behnke
  • J. Behr
  • U. Behrens
  • A. Bertolin
  • S. Bhadra
  • I. Bloch
  • V. Bokhonov
  • E. G. Boos
  • K. Borras
  • I. Brock
  • R. Brugnera
  • A. Bruni
  • B. Brzozowska
  • P. J. Bussey
  • A. Caldwell
  • M. Capua
  • C. D. Catterall
  • J. Chwastowski
  • J. Ciborowski
  • R. Ciesielski
  • A. M. Cooper-Sarkar
  • M. Corradi
  • F. Corriveau
  • G. D’Agostini
  • R. K. Dementiev
  • R. C. E. Devenish
  • G. Dolinska
  • V. Drugakov
  • S. Dusini
  • J. Ferrando
  • J. Figiel
  • B. Foster
  • G. Gach
  • A. Garfagnini
  • A. Geiser
  • A. Gizhko
  • L. K. Gladilin
  • O. Gogota
  • Yu. A. Golubkov
  • J. Grebenyuk
  • I. Gregor
  • G. Grzelak
  • O. Gueta
  • M. Guzik
  • W. Hain
  • G. Hartner
  • D. Hochman
  • R. Hori
  • Z. A. Ibrahim
  • Y. Iga
  • M. Ishitsuka
  • A. Iudin
  • F. Januschek
  • I. Kadenko
  • S. Kananov
  • T. Kanno
  • U. Karshon
  • M. Kaur
  • P. Kaur
  • L. A. Khein
  • D. Kisielewska
  • R. Klanner
  • U. Klein
  • N. Kondrashova
  • O. Kononenko
  • Ie. Korol
  • I. A. Korzhavina
  • A. Kotanski
  • U. Kötz
  • N. Kovalchuk
  • H. Kowalski
  • O. Kuprash
  • M. Kuze
  • B. B. Levchenko
  • A. Levy
  • V. Libov
  • S. Limentani
  • M. Lisovyi
  • E. Lobodzinska
  • W. Lohmann
  • B. Löhr
  • E. Lohrmann
  • A. Longhin
  • D. Lontkovskyi
  • O. Yu. Lukina
  • J. Maeda
  • I. Makarenko
  • J. Malka
  • J. F. Martin
  • S. Mergelmeyer
  • F. Mohamad Idris
  • K. Mujkic
  • V. Myronenko
  • K. Nagano
  • A. Nigro
  • T. Nobe
  • D. Notz
  • R. J. Nowak
  • K. Olkiewicz
  • Yu. Onishchuk
  • E. Paul
  • W. Perlanski
  • H. Perrey
  • N. S. Pokrovskiy
  • A. S. Proskuryakov
  • M. Przybycien
  • A. Raval
  • P. Roloff
  • I. Rubinsky
  • M. Ruspa
  • V. Samojlov
  • D. H. Saxon
  • M. Schioppa
  • W. B. Schmidke
  • U. Schneekloth
  • T. Schörner-Sadenius
  • J. Schwartz
  • L. M. Shcheglova
  • R. Shevchenko
  • O. Shkola
  • I. Singh
  • I. O. Skillicorn
  • W. Slominski
  • V. Sola
  • A. Solano
  • A. Spiridonov
  • L. Stanco
  • N. Stefaniuk
  • A. Stern
  • T. P. Stewart
  • P. Stopa
  • J. Sztuk-Dambietz
  • D. Szuba
  • J. Szuba
  • E. Tassi
  • T. Temiraliev
  • K. Tokushuku
  • J. Tomaszewska
  • A. Trofymov
  • V. Trusov
  • T. Tsurugai
  • M. Turcato
  • O. Turkot
  • T. Tymieniecka
  • A. Verbytskyi
  • O. Viazlo
  • R. Walczak
  • W. A. T. Wan Abdullah
  • K. Wichmann
  • M. Wing
  • G. Wolf
  • S. Yamada
  • Y. Yamazaki
  • N. Zakharchuk
  • A. F. Żarnecki
  • L. Zawiejski
  • O. Zenaiev
  • B. O. Zhautykov
  • N. Zhmak
  • D. S. Zotkin
Open Access
Article

Abstract

The photoproduction of D ∗± mesons has been measured with the ZEUS detector at HERA at three different ep centre-of-mass energies, \( \sqrt{s} \), of 318, 251 and 225 GeV. For each data set, D ∗± mesons were required to have transverse momentum, p T D ∗ , and pseudo-rapidity, η D, in the ranges 1.9 < p T D ∗ < 20 GeV and |η D| < 1.6. The events were required to have a virtuality of the incoming photon, Q 2, of less than 1 GeV2. The dependence on \( \sqrt{s} \) was studied by normalising to the high-statistics measurement at \( \sqrt{s}=318 \) GeV. This led to the cancellation of a number of systematic effects both in data and theory. Predictions from next-to-leading-order QCD describe the \( \sqrt{s} \) dependence of the data well.

Keywords

Lepton-Nucleon Scattering QCD Heavy quark production Charm physics 

Notes

Open Access

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.

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Copyright information

© The Author(s) 2014

Authors and Affiliations

  • The ZEUS collaboration
  • H. Abramowicz
    • 27
  • I. Abt
    • 21
  • L. Adamczyk
    • 8
  • M. Adamus
    • 34
  • R. Aggarwal
    • 4
  • S. Antonelli
    • 2
  • O. Arslan
    • 3
  • V. Aushev
    • 16
    • 17
  • Y. Aushev
    • 17
  • O. Bachynska
    • 10
  • A. N. Barakbaev
    • 15
  • N. Bartosik
    • 10
  • O. Behnke
    • 10
  • J. Behr
    • 10
  • U. Behrens
    • 10
  • A. Bertolin
    • 23
  • S. Bhadra
    • 36
  • I. Bloch
    • 11
  • V. Bokhonov
    • 16
  • E. G. Boos
    • 15
  • K. Borras
    • 10
  • I. Brock
    • 3
  • R. Brugnera
    • 24
  • A. Bruni
    • 1
  • B. Brzozowska
    • 33
  • P. J. Bussey
    • 12
  • A. Caldwell
    • 21
  • M. Capua
    • 5
  • C. D. Catterall
    • 36
  • J. Chwastowski
    • 7
    • 39
  • J. Ciborowski
    • 33
    • 51
  • R. Ciesielski
    • 10
    • 40
  • A. M. Cooper-Sarkar
    • 22
  • M. Corradi
    • 1
  • F. Corriveau
    • 18
  • G. D’Agostini
    • 26
  • R. K. Dementiev
    • 20
  • R. C. E. Devenish
    • 22
  • G. Dolinska
    • 10
  • V. Drugakov
    • 11
  • S. Dusini
    • 23
  • J. Ferrando
    • 12
  • J. Figiel
    • 7
  • B. Foster
    • 13
  • G. Gach
    • 8
  • A. Garfagnini
    • 24
  • A. Geiser
    • 10
  • A. Gizhko
    • 10
  • L. K. Gladilin
    • 20
  • O. Gogota
    • 17
  • Yu. A. Golubkov
    • 20
  • J. Grebenyuk
    • 10
  • I. Gregor
    • 10
  • G. Grzelak
    • 33
  • O. Gueta
    • 27
  • M. Guzik
    • 8
  • W. Hain
    • 10
  • G. Hartner
    • 36
  • D. Hochman
    • 35
  • R. Hori
    • 14
  • Z. A. Ibrahim
    • 6
  • Y. Iga
    • 25
  • M. Ishitsuka
    • 28
  • A. Iudin
    • 17
  • F. Januschek
    • 10
  • I. Kadenko
    • 17
  • S. Kananov
    • 27
  • T. Kanno
    • 28
  • U. Karshon
    • 35
  • M. Kaur
    • 4
  • P. Kaur
    • 4
  • L. A. Khein
    • 20
  • D. Kisielewska
    • 8
  • R. Klanner
    • 13
  • U. Klein
    • 10
    • 41
  • N. Kondrashova
    • 17
    • 47
  • O. Kononenko
    • 17
  • Ie. Korol
    • 10
  • I. A. Korzhavina
    • 20
  • A. Kotanski
    • 9
  • U. Kötz
    • 10
  • N. Kovalchuk
    • 17
  • H. Kowalski
    • 10
  • O. Kuprash
    • 10
  • M. Kuze
    • 28
  • B. B. Levchenko
    • 20
  • A. Levy
    • 27
  • V. Libov
    • 10
  • S. Limentani
    • 24
  • M. Lisovyi
    • 10
  • E. Lobodzinska
    • 10
  • W. Lohmann
    • 11
  • B. Löhr
    • 10
  • E. Lohrmann
    • 13
  • A. Longhin
    • 23
    • 49
  • D. Lontkovskyi
    • 10
  • O. Yu. Lukina
    • 20
  • J. Maeda
    • 28
    • 50
  • I. Makarenko
    • 10
  • J. Malka
    • 10
  • J. F. Martin
    • 31
  • S. Mergelmeyer
    • 3
  • F. Mohamad Idris
    • 6
    • 38
  • K. Mujkic
    • 10
    • 42
  • V. Myronenko
    • 10
  • K. Nagano
    • 14
  • A. Nigro
    • 26
  • T. Nobe
    • 28
  • D. Notz
    • 10
  • R. J. Nowak
    • 33
  • K. Olkiewicz
    • 7
  • Yu. Onishchuk
    • 17
  • E. Paul
    • 3
  • W. Perlanski
    • 33
  • H. Perrey
    • 10
  • N. S. Pokrovskiy
    • 15
  • A. S. Proskuryakov
    • 20
  • M. Przybycien
    • 8
  • A. Raval
    • 10
  • P. Roloff
    • 10
    • 43
  • I. Rubinsky
    • 10
  • M. Ruspa
    • 30
  • V. Samojlov
    • 15
  • D. H. Saxon
    • 12
  • M. Schioppa
    • 5
  • W. B. Schmidke
    • 21
    • 48
  • U. Schneekloth
    • 10
  • T. Schörner-Sadenius
    • 10
  • J. Schwartz
    • 18
  • L. M. Shcheglova
    • 20
  • R. Shevchenko
    • 17
  • O. Shkola
    • 17
  • I. Singh
    • 4
    • 37
  • I. O. Skillicorn
    • 12
  • W. Slominski
    • 9
  • V. Sola
    • 13
  • A. Solano
    • 29
  • A. Spiridonov
    • 10
    • 44
  • L. Stanco
    • 23
  • N. Stefaniuk
    • 10
  • A. Stern
    • 27
  • T. P. Stewart
    • 31
  • P. Stopa
    • 7
  • J. Sztuk-Dambietz
    • 13
  • D. Szuba
    • 13
  • J. Szuba
    • 10
  • E. Tassi
    • 5
  • T. Temiraliev
    • 15
  • K. Tokushuku
    • 14
    • 45
  • J. Tomaszewska
    • 33
    • 52
  • A. Trofymov
    • 17
  • V. Trusov
    • 17
  • T. Tsurugai
    • 19
  • M. Turcato
    • 13
  • O. Turkot
    • 10
  • T. Tymieniecka
    • 34
  • A. Verbytskyi
    • 21
  • O. Viazlo
    • 17
  • R. Walczak
    • 22
  • W. A. T. Wan Abdullah
    • 6
  • K. Wichmann
    • 10
  • M. Wing
    • 32
  • G. Wolf
    • 10
  • S. Yamada
    • 14
  • Y. Yamazaki
    • 14
    • 46
  • N. Zakharchuk
    • 17
  • A. F. Żarnecki
    • 33
  • L. Zawiejski
    • 7
  • O. Zenaiev
    • 10
  • B. O. Zhautykov
    • 15
  • N. Zhmak
    • 16
  • D. S. Zotkin
    • 20
  1. 1.INFN BolognaBolognaItaly
  2. 2.University and INFN BolognaBolognaItaly
  3. 3.Physikalisches Institut der Universität BonnBonnGermany
  4. 4.Panjab University, Department of PhysicsChandigarhIndia
  5. 5.Calabria University, Physics Department and INFNCosenzaItaly
  6. 6.National Centre for Particle PhysicsUniversiti MalayaKuala LumpurMalaysia
  7. 7.The Henryk Niewodniczanski Institute of Nuclear PhysicsPolish Academy of SciencesKrakowPoland
  8. 8.AGH-University of Science and Technology, Faculty of Physics and Applied Computer ScienceKrakowPoland
  9. 9.Department of PhysicsJagellonian UniversityCracowPoland
  10. 10.Deutsches Elektronen-Synchrotron DESYHamburgGermany
  11. 11.Deutsches Elektronen-Synchrotron DESYZeuthenGermany
  12. 12.School of Physics and AstronomyUniversity of GlasgowGlasgowUnited Kingdom
  13. 13.Hamburg University, Institute of Experimental PhysicsHamburgGermany
  14. 14.Institute of Particle and Nuclear Studies, KEKTsukubaJapan
  15. 15.Institute of Physics and Technology of Ministry of Education and Science of KazakhstanAlmatyKazakhstan
  16. 16.Institute for Nuclear ResearchNational Academy of SciencesKyivUkraine
  17. 17.Department of Nuclear PhysicsNational Taras Shevchenko University of KyivKyivUkraine
  18. 18.Department of PhysicsMcGill UniversityMontréalCanada
  19. 19.Meiji Gakuin University, Faculty of General EducationYokohamaJapan
  20. 20.Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear PhysicsMoscowRussia
  21. 21.Max-Planck-Institut für PhysikMünchenGermany
  22. 22.Department of PhysicsUniversity of OxfordOxfordUnited Kingdom
  23. 23.INFN PadovaPadovaItaly
  24. 24.Dipartimento di Fisica dell’ Università and INFNPadovaItaly
  25. 25.Polytechnic UniversityTokyoJapan
  26. 26.Dipartimento di FisicaUniversità ‘La Sapienza’ and INFNRomeItaly
  27. 27.Raymond and Beverly Sackler Faculty of Exact Sciences, School of PhysicsTel Aviv UniversityTel AvivIsrael
  28. 28.Department of PhysicsTokyo Institute of TechnologyTokyoJapan
  29. 29.Università di Torino and INFNTorinoItaly
  30. 30.Università del Piemonte Orientale, Novara, and INFNTorinoItaly
  31. 31.Department of PhysicsUniversity of TorontoTorontoCanada
  32. 32.Physics and Astronomy DepartmentUniversity College LondonLondonUnited Kingdom
  33. 33.Faculty of PhysicsUniversity of WarsawWarsawPoland
  34. 34.National Centre for Nuclear ResearchWarsawPoland
  35. 35.Department of Particle Physics and AstrophysicsWeizmann InstituteRehovotIsrael
  36. 36.Department of PhysicsYork UniversityOntarioCanada
  37. 37.Sri Guru Granth Sahib World UniversityFatehgarh SahibIndia
  38. 38.Agensi Nuklear Malaysia, 43000 KajangBangiMalaysia
  39. 39.Cracow University of Technology, Faculty of Physics, Mathematics and Applied Computer ScienceCracowPoland
  40. 40.Rockefeller UniversityNew YorkUSA
  41. 41.University of LiverpoolLiverpoolUnited Kingdom
  42. 42.University College LondonLondonUK
  43. 43.CERNGenevaSwitzerland
  44. 44.Institute of Theoretical and Experimental PhysicsMoscowRussia
  45. 45.University of TokyoTokyoJapan
  46. 46.Kobe UniversityKobeJapan
  47. 47.DESY ATLAS groupHamburgGermany
  48. 48.BNLBarnwellUSA
  49. 49.LNFFrascatiItaly
  50. 50.Tokyo Metropolitan UniversityTokyoJapan
  51. 51.Lódz UniversityLódzPoland
  52. 52.Polish Air Force Academy in DeblinDeblinPoland

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