Observation of trimuon events produced in neutrino and antineutrino interactions

• Published in: Physics letters. B Vol. 70; no. 3; pp. 393 - 395
• Main Authors: Holder, M., Knobloch, J., May, J., Paar, H.P., Palazzi, P., Ranjard, F., Schlatter, D., Steinberger, J., Suter, H., Wahl, H., Williams, E.G.H., Eisele, F., Geweniger, C., Kleinknecht, K., Spahn, G., Willutzki, H-J., Dorth, W., Dydak, F., Hepp, V., Tittel, K., Wotschack, J., Berthelot, A., Bloch, P., Devaux, B., Grimm, M., Maillard, J., Peyaud, B., Rander, J., Savoy-Navarro, A., Turlay, R., Navarria, F.L.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.01.1977
• ISSN: 0370-2693; 1873-2445
• DOI: 10.1016/0370-2693(77)90685-2

We report two trimuon events producedin v interactions. Of these, one is of the charge type −++, not previously reported. In an antineutrino exposure, one candidate of the charge type +−− has been observed. This type of event has also not been reported previously. The combined π → μ and K → μ background for the three events are calculated to be ∼ 0.7 events. The rate relative to charged current events corresponding to these three events is of the order of 4 × 10 −5.