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Inclusive photon production in pA and AA collisions at 200 GeV/u

  • T. Åkesson
  • , S. Almehed
  • , A. L.S. Angelis
  • , N. Armenise
  • , H. Atherton
  • , P. Aubry
  • , H. W. Bartels
  • , G. Beaudoin
  • , J. M. Beaulieu
  • , H. Beker
  • , O. Benary
  • , D. Bettoni
  • , V. Bisi
  • , I. Blevis
  • , H. Bøggild
  • , W. Cleland
  • , M. Clemen
  • , B. Collick
  • , F. Corriveau
  • , S. Dagan
  • K. Dederichs, S. Dell'Uomo, P. Depommier, R. C.E. Devenish, S. Di Liberto, N. DiGiacomo, J. R. Dodd, B. Dogolshein, A. Drees, H. En'yo, B. Erlandsson, M. J. Esten, C. W. Fabjan, P. Fischer, Z. Fraenkel, A. Gaidot, F. Gibrat-Debu, P. Giubellino, P. Glässel, U. Goerlach, R. Haglund, L. A. Hamel, H. van Hecke, V. Hedberg, R. Heifetz, A. Hölscher, B. Jacak, G. Jarlskog, S. Johansson, H. Kraner, V. Kroth, F. Lamarche, C. Leroy, D. Lissauer, G. London, B. Lörstad, A. Lounis, F. Martelli, A. Marzari-Chiesa, M. Masera, M. A. Mazzoni, E. Mazzucato, M. L. McCubbin, N. A. McCubbin, P. McGaughey, F. Meddi, U. Mjörnmark, M. T. Muciaccia, S. Muraviev, M. Murray, M. Neubert, S. Nilsson, L. Olsen, Y. Oren, J. P. Pansart, Y. M. Park, A. Pfeiffer, F. Piuz, V. Polychronakos, G. Poulard, M. Price, D. Rahm, L. Ramello, L. Riccati, G. Romano, G. Rosa, L. Sandor, J. Schukraft, M. Sekimoto, B. Sellden, M. Seman, A. Shmeleva, V. Sidoroy, S. Simone, Y. Sirois, H. Sletten, S. Smirnov, J. Soltani, W. Sondheim, H. J. Specht, I. Stumer, J. Sunier, V. Toherniatin, H. H. Thodberg, J. Thompson, V. Tikhomirov, I. Tserruya, G. Vasseur, R. Veenhoff, R. Wigmans, P. Yepes
  • CERN
  • Lund University
  • University College London
  • University of Bari
  • University of Montreal
  • Heidelberg University 
  • Tel Aviv University
  • University of Turin
  • Weizmann Institute of Science
  • University of Pittsburgh
  • McGill University
  • National Institute for Nuclear Physics
  • Los Alamos National Laboratory
  • Moscow Engineering Physics Institute
  • Stockholm University
  • CEA Saclay
  • Brookhaven National Laboratory
  • STFC Rutherford Appleton Laboratory
  • P.N. Lebedev Physical Institute of the Russian Academy of Sciences
  • University of Salerno
  • Budker Institute of Nuclear Physics (BINP)

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

Inclusive photon p spectra were measured with 200 GeV/u proton,16O and32S beams on W and Pt targets, using a conversion method. The measurement of charged pions in the same apparatus allows a comparison of the γ data with the expected γ's from hadronic decays π0, η, η', ω). In all data sets, no deviation from the expected shape is observed in the range of 0.1<p<1.5 GeV/c. The number of photons normalized to pions agrees within the statistical (4%-11%) and systematical (9%) errors with the number of photons expected from hadronic decays in the integrated ranges ranges of p>0.1 GeV/c and p>0.6 GeV/c.

Original languageEnglish
Pages (from-to)369-375
Number of pages7
JournalEuropean Physical Journal C
Volume46
Issue number3
DOIs
StatePublished - Sep 1990

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