1,721,894 research outputs found
Search for anomalous four jet events in e+ e- annihilation at s**(1/2) =130-GeV to 172-GeV"
No full textMeasurement of the effective weak mixing angle by jet charge asymmetry in hadronic decays of the Z boson
No full textSearch for the standard model Higgs boson in e+ e- interactions at 161-GeV<= s**(1/2) <= 172-GeV
No full textStudy of hadronic event shape in flavour tagged events in e+e- annihilation at <s>=197GeV
No full textSearch for Heavy Neutral and Charged leptons in e+e- Annihilations at s = 161 and sqrt(s) = 172
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Study of the KS0KS0 final state in two-photon collisions
No full textThe reaction e+e− →e+e−γ∗γ∗→e+e − K0SK0S is studied with the L3 detector at LEP and the formation of the f2'(1525) resonance is observed. For an integrated luminosity of 114 pb−1, 31±6 f2' events are found. Their angular distribution is consistent with a pure helicity two. The radiative width times the branching ratio is measured to be Γγγ(f'2) × (Br((f'2→ KK̅)keV. Only three events are found in the f2(1270)-a2(1320) mass region, consistent with destructive f2-a2 interference in the KS0KS0 final state. The mixing angle of the tensor meson nonet is determined to the θ = (29.4−1.6+1.4)±
Measurement of ETA Production in Two and Three-Jets Events from Hadronic Z Decays at LEP
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Generalized event shape and energy flow studies in e+e- annihilation at sqrt(s) = 91.2-208.0 GeV
No full textWe present results from a study of hadronic event structure in high energy e(+)e(-') interactions using the L3 detector at LEP. A new class of event shape distributions are measured at and above the Z boson pole for light quark (u, d, s, c) flavours. Energy flow correlations are studied for all hadronic events. Next-to-leading-log QCD calculations and QCD models with improved leading-log approximations are compared to data and good agreement is found at the Z-pole whereas some discrepancies are observed at higher centre-of-mass energies
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