Add to ORKGThe evolution of the electromagnetic coupling, α, in the momentum-transfer range 1800 GeV2 2 2 is studied with about 40 000 Bhabha-scattering events collected with the L3 detector at LEP at centre-of-mass energies √s = 189–209 GeV. The running of α is parametrised as: α(Q2)=α01−CΔα(Q2), where α0 ≡ α(Q2 = 0) is the fine-structure constant and C = 1 corresponds to the evolution expected in QED. A fit to the differential cross section of the e+e− → e+e− process for scattering angles in the range |cos θ| < 0.9 excludes the hypothesis of a constant value of α, C = 0, and validates the QED prediction with the result: C = 1.05 ± 0.07 ± 0.14, where the first uncertainty is statistical and the second systematic.Facultad de Ciencias Exacta
We describe the sample of energetic single-photon events (Eγ > 15 GeV) collected by L3 in the 1991–1...
Single W boson production in electron–positron collisions is studied with the L3 detector at centre-...
A search for supersymmetric particles (charginos, neutralinos, sleptons and stop quarks) has been pe...
The evolution of the electromagnetic coupling, α, in the momentum-transfer range 1800 GeV2 2 2 is st...
AbstractThe evolution of the electromagnetic coupling, α, in the momentum-transfer range 1800 GeV2<−...
Inclusive jet production, e+e− → e+e− jet X, is studied using 560 pb−1 of data collected at LEP with...
The process e+e− → W+W−γ is studied using the data collected by the L3 detector at LEP. New results,...
The QED processes e+e− → e+e−μ+μ− and e+e− → e+e−τ+τ− are studied with the L3 detector at LEP using ...
AbstractSingle W boson production in electron–positron collisions is studied with the L3 detector at...
The absolute muon flux between 20 and 3000 GeV is measured with the L3 magnetic muon spectrometer fo...
Small-angle Bhabha scattering data recorded at the Z resonance and large-angle Bhabha scattering dat...
The process eqeyaWqWyg is analysed using the data collected with the L3 detector at LEP at a centre-...
Inclusive charged hadron production, e+e−→e+e−h±X, is studied using 414 pb^(−1) of data collected at...
A search for charged and neutral excited leptons is performed in 217 pb−1 of e+e− collision data col...
The process e+e− → Zγ , where the Z boson decays into hadrons or neutrinos, is studied with data col...
We describe the sample of energetic single-photon events (Eγ > 15 GeV) collected by L3 in the 1991–1...
Single W boson production in electron–positron collisions is studied with the L3 detector at centre-...
A search for supersymmetric particles (charginos, neutralinos, sleptons and stop quarks) has been pe...
The evolution of the electromagnetic coupling, α, in the momentum-transfer range 1800 GeV2 2 2 is st...
AbstractThe evolution of the electromagnetic coupling, α, in the momentum-transfer range 1800 GeV2<−...
Inclusive jet production, e+e− → e+e− jet X, is studied using 560 pb−1 of data collected at LEP with...
The process e+e− → W+W−γ is studied using the data collected by the L3 detector at LEP. New results,...
The QED processes e+e− → e+e−μ+μ− and e+e− → e+e−τ+τ− are studied with the L3 detector at LEP using ...
AbstractSingle W boson production in electron–positron collisions is studied with the L3 detector at...
The absolute muon flux between 20 and 3000 GeV is measured with the L3 magnetic muon spectrometer fo...
Small-angle Bhabha scattering data recorded at the Z resonance and large-angle Bhabha scattering dat...
The process eqeyaWqWyg is analysed using the data collected with the L3 detector at LEP at a centre-...
Inclusive charged hadron production, e+e−→e+e−h±X, is studied using 414 pb^(−1) of data collected at...
A search for charged and neutral excited leptons is performed in 217 pb−1 of e+e− collision data col...
The process e+e− → Zγ , where the Z boson decays into hadrons or neutrinos, is studied with data col...
We describe the sample of energetic single-photon events (Eγ > 15 GeV) collected by L3 in the 1991–1...
Single W boson production in electron–positron collisions is studied with the L3 detector at centre-...
A search for supersymmetric particles (charginos, neutralinos, sleptons and stop quarks) has been pe...