Anomalous muon production in e+e- annihilations as evidence for heavy leptons

Burmester, J.; Criegee, L.; Dehne, H.C.; Derikum, K.; Devenish, R.; Fluegge, G.; Fox, J.D.; Franke, G.; Gerke, Ch.; Harms, P.; Horlitz, G.; Kahl, Th.; Knies, G.; Roessler, M.; Schmitz, R.; Timm, U.; Wahl, H.; Waloschek, P.; Winter, G.G.; Wolff, S.; Zimmermann, W.; Blobel, V.; Koppitz, B.; Lohrmann, E.; Luehrsen, W.; Baecker, A.; Buerger, J.; Grupen, C.; Zech, G.; Meyer, H.; Wacker, K.

doi:10.1016/0370-2693(77)90292-1

Published June 6, 1977 | Version v1

Journal article Metadata-only

Anomalous muon production in e+e- annihilations as evidence for heavy leptons

1. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany, F.R.)
2. Hamburg Univ. (Germany, F.R.). 2. Inst. fuer Experimentalphysik
3. Gesamthochschule Siegen, Germany
4. Wuppertal Univ. (Gesamthochschule) (Germany, F.R.)

Inclusive muon production in e+e- annihilation has been measured between 3.6 and 5.0 GeV. Above 4 GeV the cross section cannot be explained by conventional sources like higher order QED processes or inclusive production of the J/psi (3.1). It is however, comparible with the pair production of heavy particles of a mass of about 1.9 GeV/c2. Spin assignment and decay parameters are investigated. (Auth.)

Evidence for heavy leptons from anomalous μe production in e+e- annihilation