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Direct-photon plus away-side jet production inpp collisions at\(\sqrt s = 63\) GeV and a determination of the gluon distribution

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Zeitschrift für Physik C Particles and Fields

Abstract

We have determined the double inclusive cross-section for opposite-side high-p T photons and away-side jets withθ γ ≈θ jet≈90° produced inpp collisions at the CERN Intersecting Storage Rings at\(\sqrt s = 63\) GeV. Under the assumption that these events arise predominantly from the QCD gluon Compton process we have calculated the gluon structure function in the range 0.15≦x≦0.30 at an average square of the four-momentum transfer of 40 GeV2/c2. The data favour a soft gluon distribution in the proton.

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Authors and Affiliations

  1. University of Athens, Athens, Greece

    E. Anassontzis, P. Ioannou, C. Kourkoumelis, A. Markou & L. K. Resvanis

  2. Physikalisches Institut, University of Bonn, Federal Republic of Germany

    V. Burkert

  3. Brookhaven National Laboratory, 11973, Upton, NY, USA

    H. Gordon, D. C. Rahm, I. Stumer, M. Winik & C. Woody

  4. University of Cambridge, CB3 9EW, Cambridge, UK

    J. R. Carter & P. C. Cecil

  5. CERN, CH-1211, Geneva 23, Switzerland

    T. Åkesson, R. Batley, H. Breuker, R. Carosi, C. W. Fabjan, U. Goerlach, T. Jensen, S. Katsanevas, I. Mannelli, B. S. Nielsen, L. H. Olsen, A. Rudge, J. Schukraft & W. J. Willis

  6. Niels Bohr Institute, University of Copenhagen, DK-2100, Copenhagen, Denmark

    H. Bøggild, O. Botner, E. Dahl-Jensen, I. Dahl-Jensen, P. Dam, G. Damgaard, K. H. Hansen, R. Møller & H. H. Thodberg

  7. Physikalisches Institut, University of Heidelberg, Federal Republic of Germany

    H. Specht

  8. P.N. Lebedev Institute of Physics, SU-117324, Moscow, USSR

    I. Gavrilenko, S. Mayburov & A. Shmeleva

  9. University of Lund, S-22362, Lund, Sweden

    S. Almehed, V. Hedberg, G. Jarlskog, K. Kulka, B. Lörstad, U. Mjörnmark & G. Thorstenson

  10. Moscow Physical Engineering Institute, Moscow, USSR

    V. Chernyatin, B. Dolgoshein, Y. Goloubkov, A. Kalinovsky, V. Kantserov, P. Nevsky, S. Smirnov, N. Starinsky & A. Vanjashin

  11. Institute of Nuclear Physics, Novosibirsk, USSR

    S. Eidelman, G. Piskounov & V. Sidorov

  12. University of Pennsylvania, Philadelphia, PA, USA

    B. Callen, W. Molzon & E. Vella

  13. University of Pittsburg, PA, USA

    Y. Choi, W. E. Cleland, R. Kroeger, M. Sullivan & J. A. Thompson

  14. Queen Mary College, E1 4NS, London, UK

    A. A. Carter

  15. Rutherford Appleton Laboratory, OX11 OQX, Didcot, UK

    M. G. Albrow, M. W. Evans, J. W. Hiddleston, N. A. McCubbin & J. Williamson

  16. University of Tel Aviv, Tel Aviv, Israel

    O. Benary, S. Dagan, D. Lissauer & Y. Oren

Authors
  1. T. Åkesson
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  2. M. G. Albrow
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  3. S. Almehed
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  4. E. Anassontzis
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  5. R. Batley
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  6. O. Benary
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  7. H. Bøggild
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  8. O. Botner
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  9. H. Breuker
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  10. V. Burkert
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  11. B. Callen
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  12. R. Carosi
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  13. A. A. Carter
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  14. J. R. Carter
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  15. P. C. Cecil
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  16. V. Chernyatin
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  17. Y. Choi
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  18. W. E. Cleland
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  19. S. Dagan
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  20. E. Dahl-Jensen
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  21. I. Dahl-Jensen
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  22. P. Dam
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  23. G. Damgaard
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  24. B. Dolgoshein
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  25. S. Eidelman
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  26. M. W. Evans
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  27. C. W. Fabjan
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  28. I. Gavrilenko
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  29. U. Goerlach
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  30. Y. Goloubkov
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  31. H. Gordon
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  32. K. H. Hansen
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  33. V. Hedberg
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  34. J. W. Hiddleston
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  35. P. Ioannou
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  36. G. Jarlskog
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  37. T. Jensen
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  38. A. Kalinovsky
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  39. V. Kantserov
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  40. S. Katsanevas
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  41. C. Kourkoumelis
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  42. R. Kroeger
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  43. K. Kulka
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  44. D. Lissauer
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  45. B. Lörstad
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  46. I. Mannelli
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  47. A. Markou
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  48. S. Mayburov
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  49. N. A. McCubbin
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  50. U. Mjörnmark
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  51. R. Møller
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  52. W. Molzon
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  53. P. Nevsky
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  54. B. S. Nielsen
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  55. L. H. Olsen
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  56. Y. Oren
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  57. G. Piskounov
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  58. D. C. Rahm
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  59. L. K. Resvanis
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  60. A. Rudge
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  61. J. Schukraft
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  62. A. Shmeleva
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  63. V. Sidorov
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  64. S. Smirnov
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  65. H. Specht
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  66. N. Starinsky
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  67. I. Stumer
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  68. M. Sullivan
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  69. H. H. Thodberg
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  70. J. A. Thompson
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  71. G. Thorstenson
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  72. A. Vanjashin
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  73. E. Vella
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  74. J. Williamson
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  75. W. J. Willis
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  76. M. Winik
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  77. C. Woody
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The Axial Field Spectrometer Collaboration

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The Axial Field Spectrometer Collaboration., Åkesson, T., Albrow, M.G. et al. Direct-photon plus away-side jet production inpp collisions at\(\sqrt s = 63\) GeV and a determination of the gluon distribution. Z. Phys. C - Particles and Fields 34, 293–302 (1987). https://doi.org/10.1007/BF01548810

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  • DOI: https://doi.org/10.1007/BF01548810

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