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A study of the production of two direct photons inpp collisions at the CERN ISR

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Zeitschrift für Physik C Particles and Fields

Abstract

We have studied the processpp→γγ+X at\(\sqrt s = 63 GeV\) GeV in the central rapidity region. We report a positive signal at 96% C.L., a ratio γγ/e + e −=4.0±3.0 when the transverse momentum of each photon is above 2 GeV/c, and a cross-sectiondσ/dydM γγ=(5.5±2.7)×10−34 cm2/GeV when |y|<0.5,4<M γγ<6 GeV.

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References

  1. C. Carimalo et al.: Phys. Lett.98B, 105 (1981); B.L. Combridge: Nucl. Phys.B174, 243 (1980); A.P. Contogouris et al.: Twophoton production at largep T as a new test of QCD, McGill University preprint (1981); S.M. Berman et al.: Phys. Rev.D4, 3388 (1971); K. Soh et al.: Phys. Rev.D18, 751 (1978); M. Krawczyk, W. Ochs: Phys. Lett.79B, 119 (1978); S. Hemmi: Progr. Theor. Phys.63, 1073 (1980); E.L. Berger et al.: Nucl. Phys.B239, 52 (1984); D. Aurenche et al.: Largep T double photon production in hadronic collisions beyond leading logarithm QCD calculations, LPTHE Orsay 85/20 (1985)

    Google Scholar 

  2. R. Barbieri et al.: Phys. Lett.60B, 183 (1976); T. Appelquist et al.: Ann. Rev. Nucl. Sci.28, 387 (1978); W. Braunschweig et al.: Phys. Lett.67B, 243 (1977); R. Partridge et al.: Phys. Rev. Lett.44, 712 (1980); S. Yamada: Proc. Int. Symposium on Lepton and Photon Interactions at High Energies, Hamburg 1977, p. 69. (DESY, Hamburg, 1977)

    Google Scholar 

  3. C. Kourkoumelis et al.: Z. Phys. C—Particles and Fields16, 101 (1982)

    Google Scholar 

  4. H. Gordon et al.: Nucl. Instrum. Methods196, 303 (1982); O. Botner et al.: Nucl. Instrum. Methods196, 314 (1982); O. Botner et al.: Nucl. Instrum. Methods179, 45 (1981)

    Google Scholar 

  5. R. Batley et al.: A highly segmented NaI(T1) detector with vacuum photodiodes readout for measuring electromagnetic showers at the CERN ISR, Nucl. Instrum Methods242, 75 (1985)

    Google Scholar 

  6. R.L. Ford, W.R. Nelson: SLAC-210 (1978)

  7. C. Kourkoumelis et al.: Nucl. Phys.B 179, 1 (1981); M. Diakonou et al.: Phys. Lett.91B, 301 (1980); T. Akesson et al.: Phys. Lett.118B, 178 (1982)

    Google Scholar 

  8. C. Kourkoumelis et al.: Phys. Lett.91B, 475 (1980); J.H. Cobb et al.: Phys. Lett.68B, 101 (1977)

    Google Scholar 

  9. J.H. Cobb et al.: Phys. Lett.40, 1420 (1979); C. Kourkoumelis et al.: Phys. Lett.85B, 147 (1979); C. Kourkoumelis et al., Nucl. Phys.B 158, 39 (1979)

    Google Scholar 

Download references

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Authors and Affiliations

  1. University, Athens, Greece

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

  2. Physikalisches Institut, University, D-5300, Bonn, Federal Republic of Germany

    V. Burkert

  3. Brookhaven National Laboratory, Upton, NY, USA

    H. Gordon, I. Stumer & C. Woody

  4. Cambridge University, CBS 9EW, Cambridge, UK

    J. R. Carter & P. C. Cecil

  5. CERN, CH-1211 L23, Geneva, Switzerland

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

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

    H. Boggild, O. Botner, E. Dahl-Jensen, I. Dahl-Jensen, P. Dam, G. Damgaard, K. H. Hansen & R. Moller

  7. University, S-22362, Lund, Sweden

    S. Almehed, V. Hedberg, G. Jarlskog, K. Kulka, B. Lorstad, U. Mjornmark & G. Thorstenson

  8. University of Pennsylvania, 19104, Philadelphia, PA, USA

    B. Callen, S. Frankel, W. Frati, R. Kroeger, W. Molzon, E. Vella & W. A. Zajc

  9. University of Pittsburg, 15260, Pittsburgh, PA, USA

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

  10. Queen Mary College, E1 4Ns, London, UK

    A. A. Carter

  11. Rutherford Appleton Laboratory, 0X11 0QX, Didcot, UK

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

  12. University of Tel Aviv, Israel

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

  13. Physikalisches Institut, University, D-6906, Heidelberg, Federal Republic of Germany

    H. Specht

  14. Istituto di Fisica dell Universita and INFN, I-56100, Pisa, Italy

    R. Carosi

  15. Moscow Physical Engineering Institute, Moscow, USSR

    V. Chernyatin, B. Dolgoshein, Y. Goloubdov, A. Kalinovsky, V. Kantserov & P. Nevsky

  16. Lebedev Institute, SU-117324, Moscow, USSR

    I. Gavrilenko, S. Mayburov, A. Shmeleva & P. Vasiliev

  17. Novosibirsk Institute of Nuclear Physics, Novosibirsk, USSR

    S. Eidelman, G. Piskounov & V. Sidorov

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. Boggild
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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. W. M. Evans
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  27. C. W. Fabjan
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  28. S. Frankel
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  29. W. Frati
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  30. I. Gavrilenko
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  31. U. Goerlach
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  32. Y. Goloubdov
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  33. H. Gordon
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  34. K. H. Hansen
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  35. V. Hedberg
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  36. J. W. Hiddleston
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  37. G. Jarlskog
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  38. T. Jensen
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  39. A. Kalinovsky
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  40. V. Kantserov
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  41. S. Katsanevas
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  42. C. Kourkoumelis
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  43. R. Kroeger
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  44. K. Kulka
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  45. D. Lissauer
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  46. B. Lorstad
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  47. I. Mannelli
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  48. A. Markou
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  49. S. Mayburov
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  50. N. A. McCubbin
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  51. U. Mjornmark
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  52. R. Moller
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  53. W. Molzon
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  54. P. Nevsky
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  55. B. S. Nielsen
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  56. L. H. Olsen
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  57. Y. Oren
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  58. G. Piskounov
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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. H. Specht
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  65. I. Stumer
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  66. M. Sullivan
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  67. J. A. Thompson
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  68. G. Thorstenson
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  69. P. Vasiliev
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  70. E. Vella
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  71. J. Williamson
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  72. W. J. Willis
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  73. C. Woody
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  74. W. A. Zajc
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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. A study of the production of two direct photons inpp collisions at the CERN ISR. Z. Phys. C - Particles and Fields 32, 491–497 (1986). https://doi.org/10.1007/BF01550770

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  • DOI: https://doi.org/10.1007/BF01550770

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