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CERN Document Server 2,044 elementer funnet  1 - 10nesteslutt  gå til element: Søket tok 1.04 sekunder. 
1.
(100)
Search for Charged Higgs Bosos in $e^{+}e^{-}$ Collisions at $\sqrt{s}$ = 189-209 GeV / OPAL collaboration
A search is made for charged Higgs bosons predicted by Two-Higgs-Doublet extensions of the Standard Model (2HDM) using electron-positron collision data collected by the OPAL experiment at sqrts=189-209 GeV, corresponding to an integrated luminosity of approximately 600pb-1. Charged Higgs bosons are assumed to be pair-produced and to decay into qq, tnt or AWpm. [...]
arXiv:0812.0267; CERN-PH-EP-2008-016; CERN-PH-EP-2008-016.- Geneva : CERN, 2012-07-24 - 32 p. - Published in : Eur. Phys. J. C 72 (2012) 2076 Fulltext: PDF; External links: Fulltext; Fulltext
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2.
(91)
$\Sigma$-antihyperon correlations in $Z^{0}$ decay and investigation of the baryon production mechanism / OPAL Collaboration
Data collected around sqrt{s}=91 GeV by the OPAL experiment at the LEP e+e- collider are used to study the mechanism of baryon formation. As the signature, the fraction of Sigma-hyperons whose baryon number is compensated by the production of a Sigma-, Lambda or Xi- antihyperon is determined. [...]
arXiv:0910.2174; CERN-PH-EP-2009-013; CERN-PH-EP-2009-013.- 2009 - 32 p. - Published in : Eur. Phys. J. C 64 (2009) 609-625 Fulltext: arXiv:0910.2174 - PDF; 10052_2009_1175_OnlinePDF - PDF; External link: Preprint
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3.
(87)
Measurement of $\alpha_{s}$ with Radiative Hadronic Events / OPAL Collaboration
Hadronic final states with a hard isolated photon are studied using data taken at centre-of-mass energies around the mass of the Z0 boson with the OPAL detector at LEP. The strong coupling alpha S is extracted by comparing data and QCD predictions for event shape observables at average reduced centre-of-mass energies ranging from 24 GeV to 78 GeV, and the energy dependence of alpha S is studied. [...]
arXiv:0902.1128; CERN-PH-EP-2007-032; CERN-PH-EP-2007-032.- Geneva : CERN, 2008 - 31 p. - Published in : Eur. Phys. J. C 53 (2008) 21-39 Fulltext: arXiv:0902.1128 - PDF; CERN-PH-EP-2007-032 - PDF; Springer Open Access article: PDF; External link: Fulltext
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4.
(84)
Search for Charged Higgs bosons: Combined Results Using LEP data / ALEPH, DELPHI, L3 and OPAL Collaborations
The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have searched for pair-produced charged Higgs bosons in the framework of Two Higgs Doublet Models (2HDMs). The data of the four experiments are statistically combined. [...]
arXiv:1301.6065; CERN-PH-EP-2012-369; CERN-PH-EP-2012-369; LHWG-Note-2012-01; ALEPH-2012-001-PHYSICS-2012-001; DELPHI-2012-001-PHYS-953; L3-Note-2835; OPAL-PR433.- Geneva : CERN, 2013 - 18 p. - Published in : Eur. Phys. J. C 73 (2013) 2463 Draft (restricted): PDF; Fulltext: CERN-PH-EP-2012-369 - PDF; arXiv:1301.6065 - PDF; External link: Preprint
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5.
(81)
Search for Dirac Magnetic Monopoles in $e^{+}e^{-}$ Collisions with the OPAL Detector at LEP2 / OPAL Collaboration
This letter describes a direct search for pair produced magnetic monopoles in e+e- collisions. The analysis is based on 62.7 pb^-1 of data collected with the OPAL detector at an average centre-of-mass energy of sqrt(s)= 206.3GeV. [...]
arXiv:0707.0404; CERN-PH-EP-2007-019; CERN-PH-EP-2007-019.- Geneva : CERN, 2008 - 14 p. - Published in : Phys. Lett. B 663 (2008) 37-42 Fulltext: phep-2007-019 - PDF; arXiv:0707.0404 - PDF; External link: Fulltext
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6.
(80)
Search for neutral MSSM Higgs bosons at LEP / ALEPH Collaboration
The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have searched for the neutral Higgs bosons which are predicted by the Minimal Supersymmetric Standard Model (MSSM). The data of the four collaborations are statistically combined and examined for their consistency with the background hypothesis and with a possible Higgs boson signal. [...]
hep-ex/0602042; CERN-PH-EP-2006-001; CERN-L3-307; CERN-PH-EP-2006-001.- Geneva : CERN, 2006 - 82 p. ALEPH Papers - Published in : Eur. Phys. J. C 47 (2006) 547 Fulltext: arXiv:hep-ex_0602042 - PDF; phep-2006-001 - PDF; 0602042 - PDF; External link: Preprint
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7.
(80)
Inclusive Jet Production in Photon-Photon Collisions at $\sqrt{s_{ee}}$ from 189 to 209 GeV / OPAL Collaboration
Inclusive jet production (e+e- -> e+e- +jet+X) is studied in collisions of quasi-real photons radiated by the LEP beams at e+e- centre-of-mass energies sqrt see from 189 to 209 GeV. Jets are reconstructed using the kp jet algorithm. [...]
arXiv:0706.4382; CERN-PH-EP-2007-016; CERN-PH-EP-2007-016.- Geneva : CERN, 2008 - 17 p. - Published in : Phys. Lett. B 658 (2008) 185-192 Fulltext: phep-2007-016 - PDF; arXiv:0706.4382 - PDF; External links: Fulltext; Rivet analyses reference
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8.
(78)
Determination of $\alpha_S$ using OPAL hadronic event shapes at $\sqrt{s}$ = 91 − 209 GeV and resummed NNLO calculations / OPAL Collaboration
Hadronic event shape distributions from e+e− annihilation measured by the OPAL experiment at centre-of-mass energies between 91 GeV and 209 GeV are used to determine the strong coupling αS. The results are based on QCD predictions complete to the next-to-next-to-leading order (NNLO), and on NNLO calculations matched to the resummed next-to-leading-log-approximation terms (NNLO+NLLA). [...]
arXiv:1101.1470; CERN-PH-EP-2010-089; CERN-PH-EP-2010-089.- Geneva : CERN, 2011 - 21 p. - Published in : Eur. Phys. J. C 71 (2011) 1733 Fulltext: CERN-PH-EP-2010-089 - PDF; arXiv:1101.1470 - PDF; External link: Preprint
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9.
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Search for invisibly decaying Higgs bosons in $e^{+}e^{-} \rightarrow Z^{0}h^{0}$ production at $\sqrt{s} = 183 - 209 GeV$ / OPAL Collaboration
A search is performed for Higgs bosons decaying into invisible final states, produced in association with a Zo boson in e+e- collisions at energies between 183 and 209 GeV. The search is based on data samples collected by the OPAL detector at LEP corresponding to an integrated luminosity of about 660 pb-1. [...]
arXiv:0707.0373; CERN-PH-EP-2007-018; OPAL-PR421; CERN-PH-EP-2007-018.- Geneva : CERN, 2010 - 21 p. - Published in : Phys. Lett. B 682 (2010) 381-390 Fulltext: phep-2007-018 - PDF; arXiv:0707.0373 - PDF; External link: Preprint
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10.
(70)
Search for Invisibly Decaying Higgs Bosons with Large Decay Width Using the OPAL Detector at LEP / OPAL Collaboration
This paper describes a topological search for an invisibly decaying Higgs boson,H, produced via the Bjorken process (e+e- -> HZ). The analysis is based on data recorded using the OPAL detector at LEP at centre-of-mass energies from 183 to 209 GeV corresponding to a total integrated luminosity of 629pb-1. [...]
hep-ex/0610056; OPAL-PR-417; CERN-PH-EP-2006-026; CERN-PH-EP-2006-026; OPAL-PR-417.- Geneva : CERN, 2007 - 30 p. - Published in : Eur. Phys. J. C 49 (2007) 457-472 Fulltext: arXiv:hep-ex_0610056 - PDF; 0610056 - PDF; phep-2006-026 - PDF; External link: hep-ex/0610056 PDF
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