A combined analysis of the hadronic and leptonic decays of the Z0

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A determination of? s( $$M_{Z^0 } $$ ) at LEP using resummed QCD calculations

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A direct measurement of theZ 0 invisible width by single photon counting

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A direct search for neutralino production at LEP

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A direct search for new charged heavy leptons at LEP

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A global determination of $$\alpha _s (M_{Z^0 } )$$ at LEP

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A measurement of (892)± production in hadronic Z0 decays

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A measurement of electron production in hadronicZ 0 decays and a determination of $$\Gamma (Z^0 \to b\bar b)$$

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A measurement of energy correlations and a determination of αs(M2Z0) e+e- annihilations at √s=91 GeV

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A measurement of global event shape distributions in the hadronic decays of theZ 0

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A measurement of photon radiation in lepton pair events from Z0 decays

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A measurement of strange baryon production in hadronic Z0 decays

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A measurement of the electroweak couplings of up and down type quarks using final state photons in hadronic Z0 decays

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A measurement of the forward-backward charge asymmetry in hadronic decays of the Z0

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A model independent observation of the string effect using quark tagging at LEP

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A new XUV-source for seeding a FEL at high repetition rates

A search for acoplanar pairs of leptons or jets in Z0 decays. Mass limits on supersymmetric particles

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A search for doubly charged Higgs production in Z0 decays

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A search for lepton flavour violation in Z0 decays

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A search for scalar leptoquarks in Z0 decays

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A search for technipions and charged Higgs bosons at LEP

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A search for the top and b′ quarks in hadronic Z0 decays

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A study of Bose-Einstein correlations in e+e− annihilations at LEP

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A study of K0SK0S Bose-Einstein correlations in hadronic Z0 decays

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A study of Ks0 production in Z0 decays

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A study of angular correlations in 4-jet final states of hadronicZ 0 decays

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A study of charged particle multiplicities in hadronic decays of theZ 0

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A study of coherence of soft gluons in hadron jets

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A study of differences between quark and gluon jets using vertex tagging of quark jets

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A study of heavy flavour production using muons in hadronic Z0 decays

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A study of in Z0 decays

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A study of jet production rates and a test of QCD on the Z0 resonance

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A study of the electric charge distributions of quark and gluon jets in hadronic Z0 decays

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A study of the reaction e+e−→γγ at LEP

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A study of the recombination scheme dependence of jet production rates and of ? s ( $$M_{Z^0 } $$ ) in hadronicZ 0 decays

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A study of two-particle momentum correlations in hadronic Z0 decays

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A test of higher order electroweak theory in Z0 decays to two leptons with an associated pair of charged particles

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An improved measuremebts of αS (MZ0) using energy correlations with the OPAL detector at LEP

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Analysis of Z0 couplings to charged leptons

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Decay mode independent search for a light Higgs boson and new scalars

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Detailed characterization of electron sources yielding first demonstration of European X-ray Free-Electron Laser beam quality

Digital in-line holography with femtosecond VUV radiation provided by the free-electron laser FLASH.

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Evidence for b-flavoured baryon production in Z0 decays at LEP

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Evidence for chain-like production of strange baryon pairs in jets

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Evidence for final state photons in multihadronic decays of the Z0

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Evidence for the existence of the strange b-flavoured meson Bs0 in Z0 decays

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Experimental study of EUV mirror radiation damage resistance under long-term free-electron laser exposures below the single-shot damage threshold.

scientific article published in January 2018

Free-electron laser multiplex driven by a superconducting linear accelerator.

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Generation of coherent 19- and 38-nm radiation at a free-electron laser directly seeded at 38 nm

scientific article published on 09 September 2013

Inclusive neutral vector meson production in hadronicZ 0 decays

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Intermittency in hadronic decays of the Z0

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Limits on a light Higgs boson in e+e− collisions at LEP

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Limits on neutral heavy lepton production from Z0 decay

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Mass limits for a standard model Higgs Boson in e+e− collisions at LEP

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Measurement of $$\Gamma ({\rm Z}^0 \to b\bar b)/\Gamma ({\rm Z}^0 \to hadrons)$$ using leptons

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Measurement of B00 mixing in hadronic Z0 decays

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Measurement of branching ratios and τ polarization from τ→eνν−,τ→μνν−,andτ→π(K)ν decays at LEP

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Measurement of the B0 and B+ lifetimes

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Measurement of the Z0 mass and width with the opal detector at LEP

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Measurement of the average B hadron lifetime in Z0 decays

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Measurement of the cross sections of the reactions e+e− → γγ and e+e− → γγγ at LEP

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Measurement of the tau lepton lifetime

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Measurement of the τ lifetime

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Measurement of the τ topological branching ratios at LEP

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Measurement of theZ 0 line shape parameters and the electroweak couplings of charged leptons

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Measurements of the decay of the Z0 into lepton pairs

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Observation of J/Ψ production in multihadronic Z0 decays

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Operation of a free-electron laser from the extreme ultraviolet to the water window

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Performance of the OPAL jet chamber

Precision measurements of the neutral current from hadron and lepton production at LEP

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Properties of multihadronic events with a final state photon at $$\sqrt s = M_{Z^0 } $$

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QCD coherence studies using two particle azimuthal correlations

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Search for excited leptons at LEP

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Search for free gluons in hadronic Z0 decays

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Search for pair produced stable singly charged heavy particles in Z0 decays

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Search for the minimal standard model Higgs boson in e+e− collisions at LEP

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Searches for neutral Higgs bosons ine + e − collisions at LEP

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Studies of strong and electroweak interactions using final state photon emission in hadronicZ 0 decays

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THz pulse doubler at FLASH: double pulses for pump-probe experiments at X-ray FELs.

scientific article published in January 2018

Test of CP-invariance in e+e−→Z0→τ+τ− and a limit on the weak dipole moment of the τ lepton

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The FLASHForward facility at DESY

scientific article published in January 2016

The OPAL jet chamber

The laser system for calibration and monitoring of the OPAL jet chamber