The measurements of hadron and lepton-pair production cross sections and lepton-pair forward–backward asymmetries performed with the L3 detector at centre-of-mass energies between 130 GeV and 172 GeV are used to search for new physics phenomena. New physics effects involving four fermion vertices – contact interactions – are looked for in all channels. For hadron production the exchange of virtual leptoquarks and scalar quarks is studied. No evidence for deviations from the Standard Model expectations is found. Lower limits on the scale Λ of contact interactions in the range 1.2–7.1 TeV are obtained at the 95% confidence level for various models. Upper limits on the coupling strengths of leptoquarks and scalar quarks are derived.Facultad de...
The reaction e+e− → e+e−γ ∗γ ∗ → e+e− hadrons for quasi-real photons is studied using data from √s =...
The process eqeyaWqWyg is analysed using the data collected with the L3 detector at LEP at a centre-...
Cross sections, angular distributions and forward-backward asymmetries are presented, of two-fermion...
The measurements of hadron and lepton-pair production cross sections and leptonic forward–backward a...
The measurements of hadron and lepton-pair production cross sections and lepton-pair forward–backwar...
The reactions e+e-→e+e-e+e- and e+e-→e+e-μ+μ-, in a single tag configuration, are studied at LEP wit...
The cross section of charm production in γγ collisions σ(e+e−→e+e−cc̄X) is measured at LEP with the ...
Inclusive charged hadron production, e+e− → e+e−h±X, is studied using 414 pb−1 of data collected at ...
An analysis of the data collected in 1997 and 1998 with the DELPHI detector at e+e- collision energi...
We report the result of a search for scalar leptons in e+e- collisions at 189 GeV centre-of-mass ene...
The reaction e+e-→e+e-y*y*→e+e- hadrons is analysed using data collected by the L3 detector during t...
Extra spatial dimensions are proposed by recent theories that postulate the scale of gravity to be o...
The total and differential cross sections of the process eqeyTMng with nG2 are measured using data c...
Searches for scalar top and scalar bottom quarks, as well as for mass-degenerate scalar quarks of th...
Production of events with hadronic and leptonic final states has been measured in e(+)e(-) collision...
The reaction e+e− → e+e−γ ∗γ ∗ → e+e− hadrons for quasi-real photons is studied using data from √s =...
The process eqeyaWqWyg is analysed using the data collected with the L3 detector at LEP at a centre-...
Cross sections, angular distributions and forward-backward asymmetries are presented, of two-fermion...
The measurements of hadron and lepton-pair production cross sections and leptonic forward–backward a...
The measurements of hadron and lepton-pair production cross sections and lepton-pair forward–backwar...
The reactions e+e-→e+e-e+e- and e+e-→e+e-μ+μ-, in a single tag configuration, are studied at LEP wit...
The cross section of charm production in γγ collisions σ(e+e−→e+e−cc̄X) is measured at LEP with the ...
Inclusive charged hadron production, e+e− → e+e−h±X, is studied using 414 pb−1 of data collected at ...
An analysis of the data collected in 1997 and 1998 with the DELPHI detector at e+e- collision energi...
We report the result of a search for scalar leptons in e+e- collisions at 189 GeV centre-of-mass ene...
The reaction e+e-→e+e-y*y*→e+e- hadrons is analysed using data collected by the L3 detector during t...
Extra spatial dimensions are proposed by recent theories that postulate the scale of gravity to be o...
The total and differential cross sections of the process eqeyTMng with nG2 are measured using data c...
Searches for scalar top and scalar bottom quarks, as well as for mass-degenerate scalar quarks of th...
Production of events with hadronic and leptonic final states has been measured in e(+)e(-) collision...
The reaction e+e− → e+e−γ ∗γ ∗ → e+e− hadrons for quasi-real photons is studied using data from √s =...
The process eqeyaWqWyg is analysed using the data collected with the L3 detector at LEP at a centre-...
Cross sections, angular distributions and forward-backward asymmetries are presented, of two-fermion...