Search for excited leptons at 130-140 GeV

D. Buskulic, I. De Bonis, D. Decamp, P. Ghez, C. Goy, J. P. Lees, A. Lucotte, M. N. Minard, J. Y. Nief, P. Odier, B. Pietrzyk, M. P. Casado, M. Chmeissani, J. M. Crespo, M. Delfino, I. Efthymiopoulos, E. Fernandez, M. Fernandez-Bosman, Ll Garrido, A. JusteM. Martinez, S. Orteu, C. Padilla, I. C. Park, A. Pascual, J. A. Perlas, I. Riu, F. Sanchez, F. Teubert, A. Colaleo, D. Creanza, M. De Palma, G. Gelao, M. Girone, G. Iaselli, G. Maggi, M. Maggi, N. Marinelli, S. Nuzzo, A. Ranieri, G. Raso, F. Ruggieri, G. Selvaggi, L. Silvestris, P. Tempesta, G. Zito, X. Huang, J. Lin, Q. Ouyang, T. Wang, Y. Xie, R. Xu, S. Xue, J. Zhang, L. Zhang, W. Zhao, R. Alemany, A. O. Bazarko, M. Cattaneo, P. Comas, P. Coyle, H. Drevermann, R. W. Forty, M. Frank, R. Hagelberg, J. Harvey, P. Janot, B. Jost, E. Kneringer, J. Knobloch, I. Lehraus, G. Lutters, E. B. Martin, P. Mato, A. Minten, R. Miquel, Ll M. Mir, L. Moneta, T. Oest, A. Pacheco, J. F. Pusztaszeri, F. Ranjard, P. Rensing, L. Rolandi, D. Schlatter, M. Schmelling, M. Schmitt, O. Schneider, W. Tejessy, I. R. Tomalin, A. Venturi, H. Wachsmuth, A. Wagner, Z. Ajaltouni, A. Barrès, C. Boyer, A. Falvard, P. Gay, C. Guicheney

Producción científica: Contribución a una revistaArtículoInvestigaciónrevisión exhaustiva

33 Citas (Scopus)

Resumen

A search for the radiative decay of excited charged leptons, ℓ*, and for radiative and weak decays of excited electron neutrinos, νe*, is performed, using the 5.8 pb-1 of data collected by ALEPH at 130-140GeV. No evidence for a signal is found in single or pair production. Excluded mass limits from pair production are close to 65 GeV/c2 for all excited lepton species. Limits on the couplings, λ/mℓ*, of excited leptons are derived from single production. For an excited lepton mass of 130GeV/c2, these limits are 0.04GeV-1 for μ* and τ*, and 0.0007GeV-1 for e* For νe*, the limit is at the level of 0.03 GeV-1 for a mass of 120GeV/c2, independent of the decay branching ratios.
Idioma originalInglés
Páginas (desde-hasta)445-453
PublicaciónPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volumen385
N.º1-4
DOI
EstadoPublicada - 26 sept 1996

Huella

Profundice en los temas de investigación de 'Search for excited leptons at 130-140 GeV'. En conjunto forman una huella única.

Citar esto