Low-mass lepton-pair production in p-Be collisions at 450 GeV/c

T. Åkesson, S. Almehed, A. L.S. Angelis, J. Antos, 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. DaganK. Dederichs, P. Depommier, N. DiGiacomo, S. DiLiberto, J. R. Dodd, B. Dolgoshein, A. Drees, S. Eidelman, H. En'yo, B. Erlandsson, M. J. Esten, C. W. Fabjan, P. Fischer, A. Gaidot, F. Gibrat-Debu, P. Giubellino, P. Glässel, U. Goerlach, Y. Golubkov, R. Haglund, L. A. Hamel, H. van Hecke, V. Hedberg, R. Heifetz, A. Holscher, B. Jacak, G. Jarlskog, S. Johannson, H. Kraner, V. Kroh, F. Lamarche, C. Leroy, D. Lissauer, G. London, B. Lorstad, 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, P. Nevski, S. Nilsson, L. Olsen, Y. Oren, J. P. Pansart, Y. M. Park, A. Pfeiffer, F. Piuz, V. Polychronakos, P. Pomianowski, G. Poulard, M. Price, D. Rahm, L. Ramello, L. Riccati, G. Romano, G. Rosa, L. Sandor, J. Schukraft, M. Sekimoto, M. Seman, A. Shikonian, A. Shmeleva, V. Sidorov, S. Simone, Y. Sirois, H. Sletten, S. Smirnov, W. Sondheim, H. J. Specht, E. Stern, I. Stumer, A. Sumarokov, J. W. Sunier, V. Tcherniatin, J. Thompson, V. Tikhomirov, A. Vanyashin, G. Vasseur, R. J. Veenhof, R. Wigmans, W. J. Willis, P. Yepes

Research output: Contribution to journalArticle

54 Scopus citations


We report on the production of low-mass electron pairs and muon pairs in p-Be collisions at 450 GeV/c at the CERN SPS. For both electron and muon pairs the low-mass spectrum can be explained satisfactorily by lepton pairs from hadronic decays, and there is no need to invoke any "unconventional" source. The normalisation of the major hadronic sources is set by the data. The upper limit, at 90% confidence level, on any new source of lepton pairs is ∼20% of the hadronic decay contribution for muons, and ∼40% for electrons.

Original languageEnglish
Pages (from-to)47-64
Number of pages18
JournalZeitschrift für Physik C Particles and Fields
Issue number1
StatePublished - Mar 1995

Fingerprint Dive into the research topics of 'Low-mass lepton-pair production in p-Be collisions at 450 GeV/c'. Together they form a unique fingerprint.

  • Cite this

    Åkesson, T., Almehed, S., Angelis, A. L. S., Antos, J., Atherton, H., Aubry, P., Bartels, H. W., Beaudoin, G., Beaulieu, J. M., Beker, H., Benary, O., Bettoni, D., Bisi, V., Blevis, I., Bøggild, H., Cleland, W., Clemen, M., Collick, B., Corriveau, F., ... Yepes, P. (1995). Low-mass lepton-pair production in p-Be collisions at 450 GeV/c. Zeitschrift für Physik C Particles and Fields, 68(1), 47-64. https://doi.org/10.1007/BF01579804