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CERN Accelerating science

OPAL Conference Proceedings

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2019-07-09
06:22
Measurements of Durham, anti-$k_t$ and SIScone jet rates at LEP with the OPAL detector / Verbytskyi, Andrii (Munich, Max Planck Inst.)
We study jet production in e + e − annihilation to hadrons with data recorded by the OPAL experiment at LEP at centre-of-mass energies between 91 GeV and 209 GeV. The jet production rates were measured with Durham and for the first time with the anti- k t and SISCone jet clustering algorithms. [...]
2018 - 7 p. - Published in : Nucl. Part. Phys. Proc. 294-296 (2018) 13-19
In : 20th High-Energy Physics International Conference in Quantum Chromodynamics, Montpellier, France, 3 - 7 Jul 2017, pp.13-19

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2018-08-11
07:06
Search for top and bottom squarks / Rott, Carsten (Purdue U.) /ALEPH ; CDF ; DELPHI ; L3 ; OPAL
Searches for the lightest scalar top quark $\tilde{t}_1$ and scalar bottom quark $\tilde{b}_1$ performed at LEP2 with a center-of-mass energy of up to $\sqrt{s}=209$ GeV and at Tevatron using data collected at $\sqrt{s}=1.8$ TeV during Run I and at $\sqrt{s}=1.96$ TeV during Run II, are discussed. Different possible decay modes were considered and no evidence for any such signal was observed. [...]
FERMILAB-CONF-03-312-E.- 2003 - 3 p. - Published in : Eur. Phys. J. C 33 (2004) S743-S745
Fulltext: PDF; External link: FERMILABCONF
In : EPS International Europhysics Conference on High-Energy Physics, Aachen, Germany, 17 - 23 Jul 2003, pp.S743-S745

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2018-07-12
07:04
Heavy Quark Physics At LEP1 / Batley, Richard (Cambridge U.)
Some recent b and c quark physics result from analysis of multihadronic $Z^0$ decays at LEP 1 are reviewed. Topics covered include: charm hadron spectroscopy, measurements of the b quark semileptonic branching ratio, charm counting in b decays, and $B^0 - \bar{B}^0$ oscillations..
Paris : Edition Frontieres, 1998 - 9 p. - Published in : , pp. 395-404 Fulltext: PDF;
In : 33rd Rencontres de Moriond : Leptonic Session, Les Arcs, France, 14 - 21 Mar 1998, pp.395-404

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2018-07-12
07:04
New Particle Searches with OPAL Detector at LEP / Yamashita, Satoru (Tokyo U., ICEPP)
New particle searches using OPAL detector at LEP are reported. Herc the results mainly obtained at centre-of-mass energy of around 183 GeV are summarised for variety of topics other than Higgs searches. [...]
Paris : Edition Frontieres, 1998 - 9 p. - Published in : , pp. 145-154 Fulltext: PDF;
In : 33rd Rencontres de Moriond : Leptonic Session, Les Arcs, France, 14 - 21 Mar 1998, pp.145-154

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2018-07-12
07:04
Review of searches for supersymmetric particles at LEP / Maggi, M (INFN, Bari) /ALEPH ; DELPHI ; L3 ; OPAL
The data collected by the ALEPH, DELPHI, L3 and OPAL experiments at LEP at $\sqrt{s}$ = 183 GeV are analysed to search for supersymmetric particles. No evidence for the production of any such particles is found. [...]
Paris : Edition Frontieres, 1998 - 10 p. - Published in : , pp. 117-128 Fulltext: PDF;
In : 33rd Rencontres de Moriond : Leptonic Session, Les Arcs, France, 14 - 21 Mar 1998, pp.117-128

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2018-07-12
07:04
Triple Couplings Of Electroweak Gauge Bosons At LEP2 / Jousset, Jacques (Clermont-Ferrand U.) /ALEPH ; DELPHI ; L3 ; OPAL
The non-abelian self-couplings of electroweak gauge bosons (TGC)$\gamma W^+ W^-Z^0$ is one of the most important consequences of the SU(2)L x U(1)y symmetry of the standard model. Their measurements and the search of possible anomalous values is one of the main physics goal at LEP2 [...]
Paris : Edition Frontieres, 1998 - 5 p. - Published in : , pp. 77-82 Fulltext: PDF;
In : 33rd Rencontres de Moriond : Leptonic Session, Les Arcs, France, 14 - 21 Mar 1998, pp.77-82

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2018-07-12
07:04
The $b$ Forward-backward Asymmetry At LEP / Abbaneo, Duccio (CERN) /ALEPH ; DELPHI ; L3 ; OPAL
Measurements of the b forward-backward asymmetry at LEP are reviewed. The results are corrected for QED and QCD radiative effects, to extract the electroweak b asymmetry $A^{0,b}_{FB}$ The new procedure implemented for evaluating QCD corrections is shortly discussed. [...]
Paris : Edition Frontieres, 1998 - 8 p. - Published in : , pp. 11-18 Fulltext: PDF;
In : 33rd Rencontres de Moriond : Leptonic Session, Les Arcs, France, 14 - 21 Mar 1998, pp.11-18

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2018-06-21
06:49
Recent results from the OPAL experiment at LEP / Mannelli, M (CERN) /OPAL
1990 - 13 p. - Published in : (1990) , pp. 95-107 Fulltext: PDF;
In : 25th Rencontres de Moriond, Les Arcs, France, 20 - 27 Jan 1990, pp.95-107

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2018-06-20
06:45
Electroweak couplings from heavy flavors at LEP / Clare, R (MIT, LNS)
This talk presents the results of the four LEP experiments, Aleph, Delphi, 13 and Opal, on the partial widths for z0 --> cc and z0 --> bb (r cc and r biJ, and the forward-backward asymmetries Ace and Abb..
1991 - 11 p. - Published in : (1991) , pp. 23-33 Fulltext: PDF;
In : 26th Rencontres de Moriond : Leptonic Session, Les Arcs, France, 11 - 17 Mar 1991, pp.23-33

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2018-06-20
06:45
QCD at LEP / Gary, J W (Heidelberg U.)
1991 - 10 p. - Published in : (1991) , pp. 69-78 Fulltext: PDF;
In : 26th Rencontres de Moriond : Leptonic Session, Les Arcs, France, 11 - 17 Mar 1991, pp.69-78

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