Search Results - "Wetterling, D"
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Tests of the standard model and constraints on new physics from measurements of fermion-pair production at 189-209 GeV at LEP
Published in The European physical journal. C, Particles and fields (01-03-2004)“…Cross-sections and angular distributions for hadronic and lepton-pair final states in e + e- collisions at centre-of-mass energies between 189 GeV and 209 GeV,…”
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Decay-mode independent searches for new scalar bosons with the OPAL detector at LEP
Published in The European physical journal. C, Particles and fields (01-04-2003)“…This paper describes topological searches for neutral scalar bosons S0 produced in association with a Z0 boson via the Bjorken process \(e^+e^- \to{\rm…”
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3
Inclusive analysis of the b quark fragmentation function in Z decays at LEP
Published in The European physical journal. C, Particles and fields (01-08-2003)“…A study of \(\mathrm{b}\) quark hadronisation is presented using inclusively reconstructed B hadrons in about four million hadronic Z decays recorded in…”
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Measurement of the strange spectral function in hadronic $\tau$ decays
Published in The European physical journal. C, Particles and fields (01-07-2004)Get full text
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Search for nearly mass-degenerate charginos and neutralinos at LEP
Published in The European physical journal. C, Particles and fields (01-08-2003)“…A search was performed for charginos with masses close to the mass of the lightest neutralino in \(\mathrm{e}^{+}\mathrm{e}^{-}\) collisions at centre-of-mass…”
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Search for R-parity violating decays of sfermions at LEP
Published in The European physical journal. C, Particles and fields (01-03-2004)“…A search for pair-produced sfermions, the scalar supersymmetric partners of the Standard Model fermions, under the assumption that R-parity is not conserved…”
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super(-)-antihyperon correlations in Z super(0) decay and investigation of the baryon production mechanism
Published in The European physical journal. C, Particles and fields (01-12-2009)“…Data collected around $\sqrt{s}=91$ GeV by the OPAL experiment at the LEP e super(+)e super(-) collider are used to study the mechanism of baryon formation. As…”
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W boson polarisation at LEP2
Published in Physics letters. B (15-04-2004)“…Elements of the spin density matrix for W bosons in e+e−→W+W−→qq̄′ℓνℓ events are measured from data recorded by the OPAL detector at LEP. This information is…”
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9
Precision luminosity for Z \(^0\) lineshape measurements with a silicon-tungsten calorimeter
Published in The European physical journal. C, Particles and fields (01-06-2000)“…The measurement of small–angle Bhabha scattering is used to determine the luminosity at the OPAL interaction point for the LEP I data recorded between 1993 and…”
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Tests of models of color reconnection and a search for glueballs using gluon jets with a rapidity gap
Published in The European physical journal. C, Particles and fields (01-06-2004)“…Gluon jets with a mean energy of 22 GeV and purity of 95% are selected from hadronic Z0 decay events produced in e + e- annihilations. A subsample of these…”
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Measurement of W boson polarisations and CP-violating triple gauge couplings from W $^{+}$ W $^{-}$ production at LEP
Published in The European physical journal. C, Particles and fields (01-02-2001)“…Measurements are presented of the polarisation of W\(^{+}\)W\(^{-}\) boson pairs produced in e\(^{+}\)e\(^{-}\) collisions, and of CP-violating WWZ and…”
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Particle multiplicity of unbiased gluon jets from e+e− three-jet events
Published in The European physical journal. C, Particles and fields (01-04-2002)“…The charged particle multiplicities of two- and three-jet events from the reaction e\(^+\)e\(^-\)\(\rightarrow\) Z\(^0\rightarrow hadrons\) are measured for…”
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Measurement of triple gauge boson couplings from W $^+$ W $^-$ production at LEP energies up to 189 GeV
Published in The European physical journal. C, Particles and fields (01-02-2001)“…A measurement of triple gauge boson couplings is presented, based on W-pair data recorded by the OPAL detector at LEP during 1998 at a centre-of-mass energy of…”
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Search for Higgs bosons and other massive states decaying into two photons in e +e − collisions at 189 GeV
Published in Physics letters. B (14-10-1999)“…A search is described for the generic process e +e −→XY, where X is a neutral heavy scalar boson decaying into a pair of photons, and Y is a neutral heavy…”
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16
A measurement of the [formula omitted] branching ratio
Published in Physics letters. B (02-01-2003)“…The τ−→μ−ν̄μντ branching ratio has been measured using data collected from 1990 to 1995 by the OPAL detector at the LEP collider. The resulting value of…”
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Charged particle multiplicities in heavy and light quark initiated events above the Z0 peak
Published in Physics letters. B (12-12-2002)“…We have measured the mean charged particle multiplicities separately for bb̄, cc̄ and light quark (uū,dd̄,ss̄) initiated events produced in e+e− annihilations…”
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Measurement of the b quark forward–backward asymmetry around the Z0 peak using an inclusive tag
Published in Physics letters. B (17-10-2002)“…The b quark forward–backward asymmetry has been measured using hadronic Z0 decays collected by the OPAL experiment at LEP. Z0→bb̄ decays were selected using a…”
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Search for associated production of massive states decaying into two photons in e+e− annihilations at [formula omitted]–209 GeV
Published in Physics letters. B (19-09-2002)“…A search is performed for production of short-lived particles in e+e−→XY, with X→γγ and Y→ff̄, for scalar X and scalar or vector Y. Model-independent limits in…”
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Measurement of the charm structure function F2,cγ of the photon at LEP
Published in Physics letters. B (2002)“…The production of charm quarks is studied in deep-inelastic electron–photon scattering using data recorded by the OPAL detector at LEP at nominal e +e −…”
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