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Origin of trimuon events in high-energy neutrino interactions |
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| Authors: | T. Hansl M. Holder J. Knobloch J. May H.P. Paar P. Palazzi A. Para F. Ranjard D. Schlatter J. Steinberger H. Suter W. von Rüden H. Wahl S. Whitaker E.G.H. Williams F. Eisele K. Kleinknecht H. Lierl F.L. Navarria |
| Affiliation: | CERN, Geneva, Switzerland |
| Abstract: | The properties of 76 neutrino-initiated μ?μ?μ+ events observed in the CDHS detector in the 350 GeV and 400 GeV wide-band beams at the CERN SPS are discussed. For neutrino energies > 30 GeV and muon momenta ? 4.5 GeV, the average trimuon rate is (3.0±0.4)×10?5 of the single-muon event rate. The data are in agreement with normal charged-current interactions with the additional production of a muon pair by both hadronic and radiative processes. No evidence is found for either heavy-lepton or heavy-quark cascades. Upper limits for these two possibilities are established. |
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