Study of radiative leptonic events with hard photons and search for excited charged leptons at S**(1/2) = 130-GeV - 136-GeV
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Study of radiative leptonic events with hard photons and search for excited charged leptons at S**(1/2) = 130-GeV - 136-GeV

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Study of radiative leptonic events with hard photons and search for excited charged leptons at S**(1/2) = 130-GeV - 136-GeV

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DELPHI Collaboration; Alemany Fernández, Reyes; Cabrera Urbán, Susana Perfil; Castillo Giménez, María Victoria Perfil; Cortina Gil, Eduardo; Ferrer Soria, Antonio Perfil; Fuster Verdú, Juan A. Perfil; García García, Carmen Perfil; Hernández Rey, Juan José Perfil; Higón Rodríguez, Emilio Perfil; Lacasta Llácer, Carlos; Martínez Vidal, Fernando Perfil; Martí García, Salvador; Navas Concha, Sergio; Salt Cairols, José Perfil
Aquest document és un/a article, creat/da en: 1996

Este documento está disponible también en : http://dx.doi.org/10.1016/0370-2693(96)00672-7
During the last 1995 data acquisition period at LEP, the DELPHI experiment collected an integrated luminosity of 5.9 pb−1 at centre-of-mass energies of 130 GeV and 136 GeV. Radiative leptonic events (e,μ,τ) with high energy photons were studied and compared to Standard Model predictions. The data were used to search for charged excited leptons decaying through an electromagnetic transition. No significant signal was found. From the search for pair produced excited leptons, the limits me∗>62.5 GeV/c2, mμ∗>62.6 GeV/c2 and mτ∗>62.2 GeV/c2 at 95\% confidence level were established. For single excited lepton production, upper limits on the ratio λ/mℓ∗ of the coupling of the excited charged lepton to its mass were derived.

    DELPHI Collaboration Alemany, R. Cabrera Urbán, Susana Castillo Giménez, María Victoria Cortina, E. Ferrer Soria, Antonio Fuster Verdú, Juan A. García García, Carmen Hernández Rey, Juan José Higón Rodríguez, Emilio Lacasta Llácer, Carlos Martínez Vidal, Fernando Martinez-Vidal, F. Marti García, Salvador Navas, S. Salt Cairols, José 1996 Study of radiative leptonic events with hard photons and search for excited charged leptons at S**(1/2) = 130-GeV - 136-GeV Physics Letters B 380 480 490
http://dx.doi.org/10.1016/0370-2693(96)00672-7
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