Experimental Limits on Heavy Lepton Production by Neutrinos

We present upper limits on the production of heavy leptons (L+-) by neutrinos via the process ..nu../sub parallel/ + Ne..-->.. L+- + ..., L+- ..-->.. e +- + ..nu.. + ..nu..-bar. These limits imply that the L/sup -/ and L/sup +/, if they couple in full strength to ..nu../sub ..mu../ are heavier...

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Veröffentlicht in:	Phys. Rev. Lett.; (United States) 1978-01, Vol.40 (3), p.144-146
Hauptverfasser:	Cnops, A. M., Connolly, P. L., Kahn, S. A., Kirk, H. G., Murtagh, M. J., Palmer, R. B., Samios, N. P., Tanaka, M., Tso, T. T., Baltay, C., Caroumbalis, D., French, H., Hibbs, M., Hylton, R., Kalelkar, M., Orance, W., Schmidt, E.
Format:	Artikel
Sprache:	eng
Schlagworte:	645102 - High Energy Physics- Particle Interactions & Properties-Experimental- Weak Interactions & Properties 651425 - Nuclear Properties & Reactions, A=20-38, Experimental- Nuclear Reactions & Scattering- (-1987) BASIC INTERACTIONS CHARGED-CURRENT INTERACTIONS COUPLING DECAY ELEMENTARY PARTICLES ENERGY RANGE FERMIONS GEV RANGE HEAVY LEPTONS INTERACTIONS LEPTON NUMBER LEPTON REACTIONS LEPTONIC DECAY LEPTONS LIMITING VALUES MASS MASSLESS PARTICLES MUON NEUTRINOS NEON 20 TARGET NEUTRINO REACTIONS NEUTRINOS NUCLEAR PHYSICS AND RADIATION PHYSICS NUCLEAR REACTIONS PARTICLE DECAY PARTICLE INTERACTIONS PARTICLE PRODUCTION PHYSICS OF ELEMENTARY PARTICLES AND FIELDS POSTULATED PARTICLES REST MASS TARGETS WEAK INTERACTIONS WEAK PARTICLE DECAY
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Zusammenfassung:	We present upper limits on the production of heavy leptons (L+-) by neutrinos via the process ..nu../sub parallel/ + Ne..-->.. L+- + ..., L+- ..-->.. e +- + ..nu.. + ..nu..-bar. These limits imply that the L/sup -/ and L/sup +/, if they couple in full strength to ..nu../sub ..mu../ are heavier than 7.5 and 9 GeV, respectively. They also imply that the coupling strength ..nu../sub ..mu../ to the recently discovered 1.9-GeV heavy lepton tau is less than 0.025 of the normal ..nu mu.. - ..mu.. coupling.
ISSN:	0031-9007
DOI:	10.1103/PhysRevLett.40.144