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CERN Document Server 2,048 records found  1 - 10nextend  jump to record: Search took 1.54 seconds. 
1.
(100)
Search for Excited Leptons at $\sqrt{s}$= 189 GeV / L3 Collaboration
A search for excited leptons, $\rm e^*,~\mu^*, ~\tau^*, ~\nu_e^*, ~\nu_{\mu}^*$ and $\nu_{\tau}^*$, was performed with the L3 detector at LEP using data collected at a centre--of--mass energy of 189 GeV, corresponding to an integrated luminosity of $\rm 176~pb^{-1}$. No evidence of their production is observed. [...]
hep-ex/9910021; CERN-EP-99-138; CERN-EP-99-138; CERN-L3-191.- Geneva : CERN, 2000 - 14 p. - Published in : Phys. Lett. B 473 (2000) 177-185 Fulltext: ep-99-138 - PDF; arXiv:hep-ex_9910021 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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2.
(91)
Search for excited leptons in $e^{+}e^{-}$ collisions at $\sqrt{s}=189-209 GeV$ / DELPHI Collaboration
A search for excited lepton production in e+e- collisions was performed using the data collected by the DELPHI detector at LEP at centre-of-mass energies ranging from 189 GeV to 209 GeV, corresponding to an integrated luminosity of approximately 600 pb^{-1}. No evidence for excited lepton production was found. [...]
hep-ex/0603045; CERN-PH-EP-2004-067; CERN-PH-EP-2004-067.- Geneva : CERN, 2006 - 31 p. - Published in : Eur. Phys. J. C 46 (2006) 277-293 Fulltext: arXiv:hep-ex_0603045 - PDF; 0603045 - PDF; External link: Preprint
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3.
(86)
Search for Excited Leptons at LEP / L3 Collaboration
A search for charged and neutral excited leptons is performed in 217 pb-1 of data collected with the L3 detector at LEP at centre-of-mass energies up to 209 GeV. The pair- and single-production mechanisms are investigated and no signals are detected. [...]
hep-ex/0306016; CERN-EP-2003-013; CERN-EP-2003-013; CERN-L3-268.- Geneva : CERN, 2003 - 16 p. - Published in : Phys. Lett. B 568 (2003) 23-34 Fulltext: arXiv:hep-ex_0306016 - PDF; ep-2003-013 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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4.
(85)
Search for Excited Leptons in $e^+ e^-$ Interactions at $\sqrt{s}$=192 - 202 GeV / L3 Collaboration
Excited leptons are searched for using the L3 detector at LEP. The data collected at centre-of-mass energies in the range from 192 up to 202 GeV correspond to a total luminosity of 233 $\rm pb^{-1}$. [...]
hep-ex/0011068; CERN-EP-2000-143; CERN-EP-2000.143; CERN-EP-2000-143; CERN-L3-227.- Geneva : CERN, 2001 - 17 p. - Published in : Phys. Lett. B 502 (2001) 37-50 Fulltext: ep-2000-143 - PDF; arXiv:hep-ex_0011068 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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5.
(85)
Search for Charginos with a Small Mass Difference to the Lightest Supersymmetric Particle at $\sqrt{s} = 189 GeV$ / L3 collaboration
A search for charginos nearly mass-degenerate with the lightestsupersymmetric particle isperformed using the 176 {pb$^{-1}$ of data collected at 189 {Ge\kern -0.1em V} in 1998 with the L3detector. Mass differences between the chargino and the lightest supersymmetric particlebelow 4 {Ge\kern -0.1em V} are considered.The presence of a high transverse momentum photon is required to single out the signal from the photon-photon interaction background. [...]
hep-ex/0002043; CERN-EP-2000-018; CERN-EP-2000-018; CERN-L3-201.- Geneva : CERN, 2000 - 19 p. - Published in : Phys. Lett. B 482 (2000) 31-42 Fulltext: ep-2000-018 - PDF; arXiv:hep-ex_0002043 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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6.
(77)
Search for Heavy Neutral and Charged Leptons in $e^+ e^-$ Annihilation at LEP / L3 Collaboration
A search for exotic unstable neutral and charged heavy leptons as well as for stable charged heavy leptons is performed with the L3 detector at LEP. Sequential, vector and mirror natures of heavy leptons are considered. [...]
hep-ex/0107015; CERN-EP-2001-046; CERN-EP-2001-046; CERN-L3-238.- Geneva : CERN, 2001 - 18 p. - Published in : Phys. Lett. B 517 (2001) 75-85 Fulltext: ep-2001-046 - PDF; arXiv:hep-ex_0107015 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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7.
(77)
Search for Manifestations of New Physics in Fermion-Pair Production at LEP / L3 Collaboration
The measurements of hadron and lepton-pair production cross sections and leptonic forward-backward asymmetries performed with the L3 detector at centre-of-mass energies between 130 GeV and 189 GeV are used to search for new physics phenomena such as: contact interactions, exchange of virtual leptoquarks, scalar quarks and scalar neutrinos, effects of TeV strings in models of quantum gravity with large extra dimensions and non-zero sizes of the fermions. No evidence for these phenomena is found and new limits on their parameters are set..
hep-ex/0005028; CERN-EP-2000-061; CERN-EP-2000-061; CERN-L3-211.- Geneva : CERN, 2000 - 18 p. - Published in : Phys. Lett. B 489 (2000) 81-92 Fulltext: 0005028 - PDF; arXiv:hep-ex_0005028 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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8.
(77)
Search for Charged Higgs Bosons in $e^{+}e^{-}$ Collisions at $\sqrt{s}$ = 189 GeV / L3 Collaboration
A search for pair-produced charged Higgs bosons is performed with the L3 detector at LEP using data collected at a centre-of-mass energy of 188.6 GeV, corresponding to an integrated luminosity of 176.4 $\mathrm{pb^{-1}}$. Higgs decays into a charm and a strange quark or into a tau lepton and its associated neutrino are considered. [...]
hep-ex/9909044; CERN-EP-99-120; CERN-EP-99-120; CERN-L3-184.- Geneva : CERN, 1999 - 11 p. - Published in : Phys. Lett. B 466 (1999) 71-78 Fulltext: arXiv:hep-ex_9909044 - PDF; ep-99-120 - PDF; - Please contact the library if you need to access this document.
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9.
(76)
Search for Heavy Neutral and Charged Leptons in $e^+ e^-$ Annihilation at $\sqrt{s}$= 183 GeV and 189 GeV / L3 Collaboration
A search for unstable neutral and charged heavy leptons as well as for stable charged heavy leptons is performed at center-of-mass energies $\sqrt{s}$ = 183 and 189 GeV with the L3 detector at LEP. No evidence for their existence is found. [...]
hep-ex/9909007; CERN-EP-99-075; CERN-EP-99-75; CERN-EP-99-075; CERN-L3-177.- Geneva : CERN, 1999 - 15 p. - Published in : Phys. Lett. B 462 (1999) 354-64 Fulltext: ep-99-075 - PDF; arXiv:hep-ex_9909007 - PDF; - Please contact the library if you need to access this document.
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10.
(76)
Search for Scalar Leptons and Scalar Quarks at LEP / L3 Collaboration
Scalar partners of quarks and leptons, predicted in supersymmetric models, are searched for in e^+e^- collisions at centre-of-mass energies between 192GeV and 209GeV at LEP. No evidence for any such particle is found in a data sample of 450 pb^-1. [...]
hep-ex/0310007; CERN-EP-2003-059; CERN-EP-2003-059; CERN-L3-274.- Geneva : CERN, 2004 - 19 p. - Published in : Phys. Lett. B 580 (2004) 37-49 Fulltext: 0310007 - PDF; arXiv:hep-ex_0310007 - PDF; S0370269303015545 - XML; External link: Preprint - Please contact the library if you need to access this document.
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