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Experimental study of hard photon radiation processes at HERA

  • Experimental Physics
  • Published:
Zeitschrift für Physik C Particles and Fields

Abstract

We present an experimental study of theepeγ+p andepeγ+X processes using data recorded by the H1 detector in 1993 at the electron-proton collider HERA. These processes are employed to measure the luminosity with an accuracy of 4.5 %. A subsample of theepeγ+X events in which the hard photon is detected at angles θ γ ≤ 0.45 mrad with respect to the incident electron direction is used to verify experimentally the size of radiative corrections to theepeX inclusive cross section and to investigate the structure of the proton in theQ 2 domain down to 2 GeV2, lower than previously attained at HERA.

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References

  1. A. Courau, P. Kessler, Phys. Rev. D 33 (1986) 2028.

    Google Scholar 

  2. L. Suszycki, Proceedings of the HERA workshop, Hamburg October 12–14, 1987, ed. R.D. Peccei, p. 505.

  3. EMC Collaboration, J.J. Aubert et al., Z. Phys. C 10 (1981) 101.

    Google Scholar 

  4. M. W. Krasny, Proceedings of the workshop “Physics at HERA”, Hamburg October 29–30, 1991, ed. W. Buchmüller and G. Ingelman, p. 850 and references quoted therein.

  5. A. Kwiatkowski, H. Spiesberger, H.J. Möhring, Z. Phys. C 50 (1991) 165.

    Google Scholar 

  6. H1 Collaboration, I. Abt et al. Nucl. Phys. B 407 (1993) 515.

    Google Scholar 

  7. ZEUS Collaboration, Z. Phys. C 63 (1994) 391.

    Google Scholar 

  8. M.W. Krasny, W. Placzek, H. Spiesberger, Z. Phys. C 53 (1992) 687.

    Google Scholar 

  9. A. Courau, P. Kessler, Phys. Rev. D 46, 117 (1992).

    Google Scholar 

  10. H. Bethe, W. Heitler, Proc. Roy. Soc. A 146 (1934) 83.

    Google Scholar 

  11. G.L. Kotkin et al., Z. Phys. C 39 (1988) 61.

    Google Scholar 

  12. L.D. Landau, I.Ya. Pomeranchuk, Dokl. Akad. Nauk SSSR 92 (1953) 535.

    Google Scholar 

  13. M. W. Krasny, W. Placzek, Proceedings of the workshop “Physics at HERA”. Hamburg October 29–30, 1991, ed. W. Buchmüller and G. Ingelman, p. 862.

  14. H1 Collaboration, The H1 Detector at HERA, DESY preprint 93-103 (1993), to be published in Nucl. Instr. and Methods.

  15. K.I. Avdienko et al., Thallium halides crystals. Production, properties and applications, “Nauka”, Novosibirsk, 1989, (in Russian).

    Google Scholar 

  16. H1 Collaboration, T. Ahmed et al., Nucl. Phys. B 439 (1995) 471.

    Google Scholar 

  17. H1 Calorimeter Group, B. Andrieu et al., Nucl. Inst. Meth. A 336 (1993) 460.

    Google Scholar 

  18. H1 Calorimeter Group, B. Andrieu et al., Nucl. Inst. Meth. A 336 (1993) 499.

    Google Scholar 

  19. S. Kermiche, PhD thesis, LAL94-14, 1994.

  20. H1 Collaboration, T. Ahmed et al., Phys. Lett. B 340, (1994) 205.

    Google Scholar 

  21. L. Favart, PhD thesis, University of Brussels (1995) in litt.

  22. D.R. Yenni, S.C. Frautchi, H. Suura, Ann. Phys. 13 (1961) 379.

    Google Scholar 

  23. L.W. Mo, Y.S. Tsai, Rev. Mod. Phys. 41 (1969) 205.

    Google Scholar 

  24. D. Bardin et al. Z. Phys. C 42 (1989) 679, Z. Phys. C44 (1989) 149.

    Google Scholar 

  25. M. Böhm, H. Spiesberger, Nucl. Phys. B 294 (1987) 1081; Nucl. Phys. B304 (1987) 749.

    Google Scholar 

  26. H. Spiesberger et al., Proceedings of the workshop “Physics at HERA”, Hamburg October 29–30, 1991, ed. W. Buchmüller and G. Ingelman, p. 798.

  27. M. Glück, E. Reya, A. Vogt, Phys. Lett. B 306 (1993) 391.

    Google Scholar 

  28. B. Badelek, J. Kwiecinski, Phys. Lett. B 295 (1992) 263.

    Google Scholar 

  29. M. Fleischer, PhD thesis, DESY-FH1K-94-04, 1994.

  30. U. Obrock, PhD thesis, University of Dortmund, 1994.

  31. A. Kwiatkowski, H. Spiesberger, H. J. Möhring, Comp. Phys. Comm. 69 (1992) 155.

    Google Scholar 

  32. N. Y. Volkonsky, L. V. Prokhorov, JETPH Lett 21 (1975) 389.

    Google Scholar 

  33. A. Martin, W. J. Stirling, R. G. Roberts Phys. Lett. B 306 (1993) 145.

    Google Scholar 

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Supported by the Bundesministerium für Forschung und Technologie, FRG under contract numbers 6AC17P, 6AC47P, 6DO57I, 6HH17P, 6HH27I, 6HD17I, 6HD27I, 6KI17P, 6MP17I, and 6WT87P

Supported by the UK Particle Physics and Astronomy Research Council, and formerly by the UK Science and Engineering Research Council

Supported by FNRS-NFWO, IISN-IIKW

Supported by the Polish State Committee for Scientific Research, grant No. 204209101

Supported in part by USDOE grant DE F603 91ER40674

Supported by the Deutsche Forschungsgemeinschaft

Supported by the Swedish Natural Science Research Council

Supported by GA ČR, grant no. 202/93/2423 and by GA AV ČR, grant no. 19095

Supported by the Swiss National Science Foundation

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H1 Collaboration., Ahmed, T., Aid, S. et al. Experimental study of hard photon radiation processes at HERA. Z. Phys. C - Particles and Fields 66, 529–542 (1995). https://doi.org/10.1007/BF01579628

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  • DOI: https://doi.org/10.1007/BF01579628

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