Search for unstable sequential neutral and charged heavy leptons in e$^+$e$^-$ annihilation at $\sqrt{s}$ = 130 GeV and 136 GeV
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M. Acciarri
- Function : Author
A. Adam
- Function : Author
O. Adriani
- Function : Author
- PersonId : 741027
- IdHAL : patrice-jean-marie-lebrun
- ORCID : 0000-0001-6115-5856
M. Aguilar-Benitez
- Function : Author
S. Ahlen
- Function : Author
B. Alpat
- Function : Author
J. Alcaraz
- Function : Author
G. Alemanni
- Function : Author
J. Allaby
- Function : Author
A. Aloisio
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G. Alverson
- Function : Author
M.G. Alviggi
- Function : Author
G. Ambrosi
- Function : Author
H. Anderhub
- Function : Author
V.P. Andreev
- Function : Author
T. Angelescu
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D. Antreasyan
- Function : Author
A. Arefev
- Function : Author
T. Azemoon
- Function : Author
T. Aziz
- Function : Author
P. Bagnaia
- Function : Author
L. Baksay
- Function : Author
R.C. Ball
- Function : Author
S. Banerjee
- Function : Author
K. Banicz
- Function : Author
R. Barillere
- Function : Author
L. Barone
- Function : Author
P. Bartalini
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A. Baschirotto
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M. Basile
- Function : Author
R. Battiston
- Function : Author
A. Bay
- Function : Author
F. Becattini
- Function : Author
U. Becker
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F. Behner
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J. Berdugo
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P. Berges
- Function : Author
B. Bertucci
- Function : Author
B.L. Betev
- Function : Author
M. Biasini
- Function : Author
A. Biland
- Function : Author
- PersonId : 755137
- ORCID : 0000-0002-1288-833X
G.M. Bilei
- Function : Author
S.C. Blyth
- Function : Author
G.J. Bobbink
- Function : Author
R. Bock
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A. Bohm
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B. Borgia
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D. Bourilkov
- Function : Author
M. Bourquin
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Elizabeth Brambilla
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J.G. Branson
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V. Brigljevic
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I.C. Brock
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A. Bujak
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J.D. Burger
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W.J. Burger
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J. Busenitz
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A. Buytenhuijs
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X.D. Cai
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M. Campanelli
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M. Capell
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G. Cara Romeo
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M. Caria
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G. Carlino
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A.M. Cartacci
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J. Casaus
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G. Castellini
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R. Castello
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F. Cavallari
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N. Cavallo
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C. Cecchi
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M. Cerrada
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F. Cesaroni
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M. Chamizo
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A. Chan
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Y.H. Chang
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U.K. Chaturvedi
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A. Chen
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G. Chen
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G.M. Chen
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H.F. Chen
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C.Y. Chien
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M.T. Choi
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C. Civinini
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P. Denes
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P.H. Fisher
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L. Fredj
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W. Kittel
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A.C. Konig
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A. Kongeter
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I. Korolko
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V. Koutsenko
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A. Koulbardis
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R.W. Kraemer
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T. Kramer
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W. Krenz
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H. Kuijten
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A. Kunin
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P. Ladron de Guevara
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G. Landi
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C. Lapoint
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K. Lassila-Perini
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M. Lebeau
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A. A. Lebedev
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P. Lecomte
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P. Lecoq
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P. Le Coultre
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J.S. Lee
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K.Y. Lee
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J.M. Le Goff
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R. Leiste
- Function : Author
M. Lenti
- Function : Author
Emilio Leonardi
- Function : Author
P. Levchenko
- Function : Author
C. Li
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E. Lieb
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W.T. Lin
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F.L. Linde
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B. Lindemann
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L. Lista
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Z.A. Liu
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W. Lohmann
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E. Longo
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W. Lu
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Y.S. Lu
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K. Lubelsmeyer
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C. Luci
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D. Luckey
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L. Ludovici
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L. Luminari
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W. Lustermann
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W.G. Ma
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A. Macchiolo
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M. Maity
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G. Majumder
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L. Malgeri
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A. Malinin
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C. Mana
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S. Mangla
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P. Marchesini
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F. Marzano
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G.G.G. Massaro
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R.R. Mcneil
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S. Mele
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L. Merola
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M. Meschini
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W.J. Metzger
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G. Mirabelli
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R. Moore
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M. Napolitano
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A. Nippe
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G. Organtini
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R. Ostonen
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D. Pandoulas
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S. Paoletti
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P. Paolucci
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H.K. Park
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S. Patricelli
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T. Paul
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M. Pauluzzi
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C. Paus
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D. Peach
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Y.J. Pei
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A. Pevsner
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D. Piccolo
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M. Pieri
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J.C. Pinto
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P.A. Piroue
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E. Pistolesi
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V. Plyashkin
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M. Pohl
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V. Pozhidaev
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H. Postema
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N. Produit
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R. Raghavan
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G. Rahal-Callot
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P.G. Rancoita
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M. Rattaggi
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G. Raven
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P. Razis
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K. Read
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D. Ren
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M. Rescigno
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S. Reucroft
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T. van Rhee
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A. Ricker
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S. Riemann
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B.C. Riemers
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K. Riles
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S. Ro
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A. Robohm
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J. Rodin
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F.J. Rodriguez
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B.P. Roe
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S. Rohner
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L. Romero
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Ph. Rosselet
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M.E. Sarakinos
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C. Schafer
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D. Schmitz
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K. Schultze
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G. Schwering
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G. Viertel
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R. Volkert
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H. Vogt
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A.A. Vorobev
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A. Vorvolakos
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B.Z. Yang
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C.G. Yang
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J.B. Ye
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S.C. Yeh
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J.M. You
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C. Zaccardelli
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A. Zalite
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P. Zemp
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Zhen Zhang
- Function : Author
- PersonId : 767884
- ORCID : 0000-0002-9704-6472
- IdRef : 204542138
Z.P. Zhang
- Function : Author
B. Zhou
- Function : Author
Y. Zhou
- Function : Author
G.Y. Zhu
- Function : Author
R.Y. Zhu
- Function : Author
A. Zichichi
- Function : Author
Abstract
A search for unstable sequential neutral and charged heavy leptons has been made at center-of-mass energies 130 and 136 \GeV\ with the L3 detector at LEP. The neutral leptons are assumed to decay via mixing to electrons and muons. No evidence for their existence was found. We exclude unstable Dirac neutrinos for masses below 59.3 (57.9) \GeV\ and unstable Majorana neutrinos below 48.6 (47.2) \GeV\ if the neutrino couples to the electron(muon) family. We exclude unstable charged heavy leptons for masses below 61 \GeV\ for a wide range of the associated neutral lepton m