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Search for Colour Singlet and Colour Reconnection Effects in Hadronic Z Decays at LEP
L3 Collaboration
A search is performed in symmetric 3-jet hadronic Z decay events for evidence of colour singlet production or colour reconnection effects. Asymmetries in the angular separation of…
Search for Single Top Production at LEP
L3 Collaboration
Single top production in e+e- annihilations is searched for in data collected by the L3 detector at centre-of-mass energies from 189 to 209 GeV, corresponding to a total integrated…
Measurement of Genuine Three-Particle Bose-Einstein Correlations in Hadronic Z decay
L3 Collaboration
We measure three-particle Bose-Einstein correlations in hadronic Z decay with the L3 detector at LEP. Genuine three-particle Bose-Einstein correlations are observed. By comparing t…
f_1(1285) Formation in Two-Photon Collisions at LEP
L3 Collaboration
The eta pi^+ pi^- final state in two-photon collisions is studied with the L3 detector at LEP, at centre-of-mass energies from 183 to 209 GeV with an integrated luminosity of 664.6…
Production of Single W Bosons at \sqrt{s}=189 GeV and Measurement of WWgamma Gauge Couplings
L3 Collaboration
Single W boson production in electron-positron collisions is studied with the L3 detector at LEP. The data sample collected at a centre-of-mass energy of \sqrt{s} = 188.7GeV corres…
Measurement of the Spectroscopy of Orbitally Excited B Mesons at LEP
L3 Collaboration
We measure the masses, decay widths and relative production rate of orbitally excited B mesons using 1.25 million hadronic Z decays recorded by the L3 detector. B-meson candidates…
Measurement of an Elongation of the Pion Source in Z Decays
L3 Collaboration
We measure Bose-Einstein correlations between like-sign charged pion pairs in hadronic Z decays with the L3 detector at LEP. The analysis is performed in three dimensions in the lo…
Status and Prospects of Supersymmetry Searches at Colliders
M. Dittmar
Experiments at particle colliders have reached center of mass energies well above 100 GeV, equivalent to temperatures which existed shortly after the big bang. These experiments, t…
Towards a Precise Parton Luminosity Determination at the CERN LHC
M. Dittmar, F. Pauss, D. Zuercher
A new approach to determine the LHC luminosity is investigated. Instead of employing the proton-proton luminosity measurement, we suggest to measure directly the parton-parton lumi…
Neutral Current Interference in the TeV Region; the Experimental Sensitivity at the LHC
Michael Dittmar
The possibilities to measure lepton forward--backward asymmetries at the LHC in the reaction pp(qqbar) --> l+l- are studied for dilepton events with masses above 400 GeV. It is sho…