62 citations · 613 across the 24 of their papers we have counts for
24 papers · 1 filter
Measurement of the Cross Section of W-boson pair production at LEP
L3 Collaboration
The cross section of W-boson pair-production is measured with the L3 detector at LEP. In a data sample corresponding to a total luminosity of 629.4/pb, collected at centre-of-mass…
Search for Charginos with a Small Mass Difference with the Lightest Supersymmetric Particle at \sqrt{s} = 189 GeV
L3 Collaboration
A search for charginos nearly mass-degenerate with the lightest supersymmetric particle is performed using the 176 pb^-1 of data collected at 189 GeV in 1998 with the L3 detector.…
Measurement of the e+e- -> Z gamma gamma Cross Section and Determination of Quartic Gauge Boson Couplings at LEP
L3 Collaboration
A first measurement of the cross section of the process e+e- -> Z gamma gamma is reported using a total integrated luminosity of 231 pb^-1 collected with the L3 detector at centre-…
Measurement of the Running of the Fine-Structure Constant
L3 Collaboration
Bhabha scattering data recorded at \sqrt{s}=189 GeV by the L3 detector at LEP are used to measure the running of the effective fine-structure constant for spacelike momentum transf…
Measurement of Hadron and Lepton-Pair Production at 130GeV < \sqrt{s} < 189 GeV at LEP
L3 Collaboration
We report on measurements of e+e- annihilation into hadrons and lepton pairs. The data have been collected with the L3 detector at LEP at centre-of-mass energies between 130 and 18…
Direct Observation of Longitudinally Polarised W Bosons
L3 Collaboration
The three different helicity states of W bosons, produced in the reaction e+e- -> W+W- -> l nu q q~ are studied using leptonic and hadronic W decays at sqrt{s}=183GeV and 189GeV. T…
Measurement of the Probability of Gluon Splitting into Charmed Quarks in Hadronic Z Decays
L3 Collaboration
We have measured the probability, n(g->cc~), of a gluon splitting into a charm-quark pair using 1.7 million hadronic Z decays collected by the L3 detector. Two independent methods…
Search for Extra Dimensions in Boson and Fermion Pair Production in e+e- Interactions at LEP
L3 Collaboration
Extra spatial dimensions are proposed by recent theories that postulate the scale of gravity to be of the same order as the electroweak scale. A sizeable interaction between gravit…
Search for Neutral Higgs Bosons of the Minimal Supersymmetric Standard Model in e+e- Interactions at \sqrt{s} = 189 GeV
L3 Collaboration
A search for the lightest neutral scalar and neutral pseudoscalar Higgs bosons in the Minimal Supersymmetric Standard Model is performed using 176.4 pb^-1 of integrated luminosity…
Search for Excited Leptons at \sqrt{s} = 189 GeV
L3 Collaboration
A search for excited leptons, 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, corres…
Searches for Scalar Quarks in e^+e^- Interactions at \sqrt{s} = 189 GeV
L3 Collaboration
Searches for scalar top and scalar bottom quarks, as well as for mass-degenerate scalar quarks of the first two families are performed at 189 GeV centre-of-mass energy with the L3…
Single and Multi-Photon Events with Missing Energy in e+e- Collisions at \sqrt{s} = 189 GeV
L3 Collaboration
Single and multi-photon events with missing energy are analysed using data collected with the L3 detector at LEP at a centre-of-mass energy of 189 GeV, for a total of 176 pb^{-1} o…
Measurement of Triple-Gauge-Boson Couplings of the W Boson at LEP
L3 Collaboration
We report on measurements of the triple-gauge-boson couplings of the W boson in e+e- collisions with the L3 detector at LEP. W-pair, single-W and single-photon events are analysed…
Search for Charginos and Neutralinos in e+e- collisions at \sqrt{s} = 189 Gev
L3 Collaboration
We report the result of a search for charginos and neutralinos, in e+e- collisions at 189 GeV centre-of-mass energy at LEP. No evidence for such particles is found in a data sample…
Search for Scalar Leptons in e+e- collisions at \sqrt{s}=189 GeV
L3 Collaboration
We report the result of a search for scalar leptons in e+e- collisions at 189 GeV centre-of-mass energy at LEP. No evidence for such particles is found in a data sample of 176 pb^{…
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 integrate…
Study of Z Boson Pair Production in e+e- Collisions at LEP at \sqrt{s}=189 GeV
L3 Collaboration
The pair production of Z bosons is studied using the data collected by the L3 detector at LEP in 1998 in e+e- collisions at a centre-of-mass energy of 189 GeV. All the visible fina…
Search for Low Scale Gravity Effects in e+e- Collisions at LEP
L3 Collaboration
Recent theories propose that quantum gravity effects may be observable at LEP energies via gravitons that couple to Standard Model particles and propagate into extra spatial dimens…
Measurement of Mass and Width of the W Boson at LEP
L3 Collaboration
We report on measurements of the mass and total decay width of the W boson with the L3 detector at LEP. W-pair events produced in interactions between 161 GeV and…
Formation of the in Two-Photon Collisions at LEP
L3 Collaboration
The two-photon width of the meson has been measured with the L3 detector at LEP. The is studied in the decay modes , KK, KK…
Search for Heavy Neutral and Charged Leptons in ee Annihilation at = 183 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 = 183 and 189 GeV with the L3…
Search for Heavy Isosinglet Neutrinos in ee Annihilation at 130189 GeV
L3 Collaboration
A search for heavy neutrinos that are isosinglets under the standard gauge group is made at center-of-mass energies 130 189 GeV with the L3 detector at LEP…
Measurement of Inclusive Production in Two-Photon Collisions at LEP
L3 Collaboration
Inclusive production of mesons in two-photon collisions was measured by the L3 experiment at LEP. The data were collected at a centre-of-mass energy $\sqrt{s} =…
Search for the Standard Model Higgs boson in ee interactions at $\root{s}$ = 189 GeV
L3 Collaboration
A search for the Standard Model Higgs boson is carried out on 176.4pb of data collected by the L3 detector at a center-of-mass energy of 189 GeV. The data are consistent wit…