Details

Autor(en) / Beteiligte

• Acciarri, M.
• Adriani, O.
• Aguilar-Benitez, M.
• Ahlen, S.
• Alpat, B.
• Alcaraz, J.
• Alemanni, G.
• Allaby, J.
• Aloisio, A.
• Alverson, G.
• Alviggi, M G.
• Ambrosi, G.
• Anderhub, H.
• Andreev, V P.
• Angelescu, T.
• Anselmo, F.
• Antreasyan, D.
• Arefiev, A.
• Azemoon, T.
• Aziz, T.
• Bagnaia, P.
• Baksay, L.
• Ball, R C.
• Banerjee, S.
• Banicz, K.
• Barillere, R.
• Barone, L.
• Bartalini, P.
• Baschirotto, A.
• Basile, M.
• Battiston, R.
• Bay, A.
• Becattini, F.
• Becker, U.
• Behner, F.
• Berdugo, J.
• Berges, P.
• Bertucci, B.
• Betev, B L.
• Bhattacharya, S.
• Biasini, M.
• Biland, A.
• Bilei, G M.
• Blaising, J J.
• Blyth, S C.
• Bobbink, G J.
• Bock, R.
• Bohm, A.
• Borgia, B.
• Boucham, A.
• Bourilkov, D.
• Bourquin, M.
• Boutigny, D.
• Braccini, S.
• Branson, J G.
• Brigljevic, V.
• Brock, I C.
• Buffini, A.
• Buijs, A.
• Burger, J D.
• Burger, W J.
• Busenitz, J.
• Cai, X D.
• Campanelli, M.
• Capell, M.
• Cara Romeo, G.
• Caria, M.
• Carlino, G.
• Cartacci, a M.
• Casaus, J.
• Castellini, G.
• Cavallari, F.
• Cavallo, N.
• Cecchi, C.
• Cerrada, M.
• Cesaroni, F.
• Chamizo, M.
• Chan, A.
• Chang, y H.
• Chaturvedi, U K.
• Chekanov, S V.
• Chemarin, M.
• Chen, A.
• Chen, G.
• Chen, G M.
• Chen, H F.
• Chen, Hs
• Chen, M.
• Chiefari, G.
• Chien, C Y.
• Choi, M T.
• Cifarelli, L.
• Cindolo, F.
• Civinini, C.
• Clare, I.
• Clare, R.
• Cohn, H O.
• Coignet, G.
• Colijn, a P.
• Colino, N.

Titel

Search for Excited Leptons in $e^+ e^-$ Annihilation at $\sqrt{s}$ = 161 GeV

Ist Teil von

• Physics letters. B, 1997, Vol.401, p.139-149

Ort / Verlag

Elsevier

Erscheinungsjahr

1997

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A search for excited leptons $\rm e^*,~\mu^*, ~\tau^*$ and $\nu_{\rm e}^*$ in $\rm e^+e^-$ collisions at $\rm \sqrt{s}$ = 161 GeV is performed using the $\rm 10.8 ~pb^{-1}$ of data collected by the L3 detector at LEP. No evidence has been found for their existence. From an analysis of the expected $\ell^*\ell^*$ pair production in the channels $\rm ee\gamma\gamma$, $\rm \mu\mu\gamma\gamma$, $\rm \tau\tau\gamma\gamma$, $\rm eeWW$, and $\rm \nu\nu\gamma\gamma$, the lower mass limits at 95\% C.L. are 79.7 GeV for $\rm e^{*}$, 79.9 GeV for $\mu^{*}$, 79.3 GeV for $\tau^{*}$ and 71.3 GeV for $\nu_{\rm e}^{*}$ assuming the same couplings as for standard leptons. From an analysis of the expected $\ell\ell^*$ single production in channels $\rm ee\gamma$, $\mu\mu\gamma$, $ \tau\tau\gamma$, $\rm \nu_{e}eW$ and $\nu\nu\gamma$, the upper limits on the couplings $\lambda/m_{\ell^*}$ up to $m_{\ell^{*}}$ = 161 GeV are determined.