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Direct photon production from pions and protons at 200 GeV/c

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Zeitschrift für Physik C Particles and Fields

Abstract

Direct photon production has been studied by an experiment performed with the NA3 spectrometer at CERN, using incident negative and positive beams at 200 GeV/c interacting with an isoscalar Carbon target. Two different triggers have been used; one of them requires the photon conversion. The experiment is sensitive to direct photons produced with 3.0≦P T ≦6 GeV/c and center-of-mass rapidity −0.4≦y *≦1.2. Inclusive cross sections are given for incident π± and protons, and compared with second order QCD predictions; finally an estimation of the gluon structure function of the nucleon is given.

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Author notes

  1. M. Bardadin-Otwinowska

    Present address: Université de Clermont-Ferrand, France

  2. P. Lariccia

    Present address: Università di Perugia, Italy

  3. G. C. Moneti

    Present address: Syracuse University, Syracuse, NY

Authors and Affiliations

  1. CEN, Saclay, F-91191, Gif sur Yvette, France

    G. Burgun, Ph. Charpentier, J. F. Detoeuf, B. Gandois, V. Hajjar & P. Le Dû

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

    M. Bardadin-Otwinowska, M. Hansroul, A. Michelini, G. C. Moneti, G. Rahal-Callot & O. Runolfsson

  3. Collège de France, F-75231, Paris, France

    M. Crozon, P. Delpierre, P. Espigat, J. Mas & A. Tilquin

  4. Ecole Polytechnique, F-91128, Palaiseau, France

    J. Badier, U. Berthon, H. Bienvenu, J. Bourotte, Y. Karyotakis, E. Paré, M. Rumpf & S. Weisz

  5. Laboratoire de l'Accélérateur Linéaire, F-91405, Orsay, France

    M. Bardadin-Otwinowska, J. Boucrot, O. Callot, M. Cohen, D. Décamp & M. Moniez

  6. Istituto di Fisica, Universita di Pisa, Piazza Torricelli 2, I-56100, Pisa, Italy

    C. Bemporad, A. M. Cnops, F. Constantini, G. R. Giannini & P. Lariccia

  7. Sezione di Pisa, INFN, I-56010, Pisa, Italy

    C. Bemporad, A. M. Cnops, F. Constantini, G. R. Giannini & P. Lariccia

Authors
  1. J. Badier
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  2. M. Bardadin-Otwinowska
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  3. C. Bemporad
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  4. U. Berthon
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  5. H. Bienvenu
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  6. J. Boucrot
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  7. J. Bourotte
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  8. G. Burgun
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  9. O. Callot
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  10. Ph. Charpentier
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  11. A. M. Cnops
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  12. M. Cohen
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  13. F. Constantini
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  14. M. Crozon
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  15. D. Décamp
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  16. P. Delpierre
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  17. J. F. Detoeuf
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  18. P. Espigat
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  19. B. Gandois
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  20. G. R. Giannini
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  21. V. Hajjar
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  22. M. Hansroul
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  23. Y. Karyotakis
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  24. P. Lariccia
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  25. P. Le Dû
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  26. J. Mas
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  27. A. Michelini
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  28. G. C. Moneti
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  29. M. Moniez
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  30. E. Paré
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  31. G. Rahal-Callot
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  32. M. Rumpf
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  33. O. Runolfsson
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  34. A. Tilquin
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  35. S. Weisz
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NA3 Collaboration

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NA3 Collaboration., Badier, J., Bardadin-Otwinowska, M. et al. Direct photon production from pions and protons at 200 GeV/c. Z. Phys. C - Particles and Fields 31, 341–347 (1986). https://doi.org/10.1007/BF01588030

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  • DOI: https://doi.org/10.1007/BF01588030

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