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CERN Document Server 170 záznamov nájdených  1 - 10ďalšíkoniec  skoč na záznam: Hľadanie trvalo 5.98 sekúnd. 
1.
Electroweak Measurements in Electron-Positron Collisions at W-Boson-Pair Energies at LEP / ALEPH Collaboration
Electroweak measurements performed with data taken at the electron-positron collider LEP at CERN from 1995 to 2000 are reported. The combined data set considered in this report corresponds to a total luminosity of about 3~fb$^{-1}$ collected by the four LEP experiments ALEPH, DELPHI, L3 and OPAL, at centre-of-mass energies ranging from $130~GeV$ to $209~GeV$ [...]
arXiv:1302.3415; CERN-PH-EP-2013-022; CERN-PH-EP-2013-022.- Geneva : CERN, 2013 - 126 p. - Published in : Phys. Rep. 532 (2013) 119-244 Draft (restricted): PDF; Fulltext: CERN-PH-EP-2013-022 - PDF; arXiv:1302.3415 - PDF; External link: Preprint
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2.
Measurement of the quark to photon fragmentation function through the inclusive production of prompt photons in hadronic $Z^0$ decays / OPAL Collaboration
The inclusive production of prompt photons with energy above 10 GeV is measured using the OPAL detector in hadronic Z^0 decays at LEP. In contrast to previous measurements, the prompt photons were not required to be isolated. [...]
hep-ex/9708020; CERN-PPE-97-086; CERN-PPE-97-86; CERN-PPE-97-086.- Geneva : CERN, 1998 - 24 p. - Published in : Eur. Phys. J. C 2 (1998) 39-48 Fulltext: PDF; External links: Fulltext; Fulltext
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3.
Precision electroweak measurements on the $Z$ resonance / ALEPH Collaboration
We report on the final electroweak measurements performed with data taken at the Z resonance by the experiments operating at the electron-positron colliders SLC and LEP. The data consist of 17 million Z decays accumulated by the ALEPH, DELPHI, L3 and OPAL experiments at LEP, and 600 thousand Z decays by the SLD experiment using a polarised beam at SLC. [...]
hep-ex/0509008; SLAC-R-774; CERN-PH-EP-2005-041; SLAC-R-774; CERN-L3-304.- Geneva : CERN, 2006 - 302 p. ALEPH Papers - Published in : Phys. Rep. 427 (2006) 257 Fulltext: phep-2005-041 - PDF; arXiv:hep-ex_0509008 - PDF; External link: SLAC Document Server
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4.
Untersuchung hadronischer Zweiphotonereignisse mit dem L3-Detektor am LEP / Bechtluft, J
Geneva : CERN, 1994.
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5.
Measurement of the Low-x Behaviour of the Photon Structure Function $F2-\gamma$ / OPAL Collaboration
The photon structure function F2-gamma(x,Q**2) has been measured using data taken by the OPAL detector at centre-of-mass energies of 91Gev, 183Gev and 189Gev, in Q**2 ranges of 1.5 to 30.0 GeV**2 (LEP1), and 7.0 to 30.0 GeV**2 (LEP2), probing lower values of x than ever before. Since previous OPAL analyses, new Monte Carlo models and new methods, such as multi-variable unfolding, have been introduced, reducing significantly the model dependent systematic errors in the measurement..
hep-ex/0007018; CERN-EP-2000-082; CERN-EP-2000-082.- Geneva : CERN, 2000 - 50 p. - Published in : Eur. Phys. J. C 18 (2000) 15-39 Fulltext: arXiv:hep-ex_0007018 - PDF; 0007018 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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6.
Measurements of the QED structure of the photon / Abbiendi, G ; Ackerstaff, K ; Alexander, Gideon ; Allison, J ; Altekamp, N ; Anderson, K J ; Anderson, S ; Arcelli, S ; Asai, S ; Ashby, S F et al.
Geneva : CERN, 1999 - Published in : Eur. Phys. J. C 11 (1999) 409-25
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7.
Precision Luminosity for $Z^{0}$ Lineshape Measurements with a Silicon-Tungsten Calorimeter / OPAL Collaboration
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 1995. The measurement is based on the OPAL Silicon-Tungsten Luminometer which is composed of two calorimeters encircling the LEP beam pipe, on opposite sides of the interaction point. [...]
hep-ex/9910066; CERN-EP-99-136; CERN-EP-99-136.- Geneva : CERN, 2000 - 89 p. - Published in : Eur. Phys. J. C 14 (2000) 373-425 Fulltext: 9910066 - PDF; arXiv:hep-ex_9910066 - PDF; External link: hep-ex/9910066 PDF - Please contact the library if you need to access this document.
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8.
Search for Anomalous Production of Acoplanar Di-lepton Events in $e^{+}e^{-}$ Collisions at $\sqrt{s}$=183 and 189 GeV / OPAL Collaboration
A selection of di-lepton events with significant missing transverse momentum has been performed using a total data sample of 237.4 pb-1 at e+e- centre-of-mass energies of 183 GeV and 189 GeV. The observed numbers of events - 78 at 183 GeV and 301 at 189 GeV - are consistent with the numbers expected from Standard Model processes, which arise predominantly from W+W- production with each W decaying leptonically. [...]
hep-ex/9909052; CERN-EP-99-122; CERN-EP-99-122.- Geneva : CERN, 2000 - 42 p. - Published in : Eur. Phys. J. C 14 (2000) 51-71 Fulltext: arXiv:hep-ex_9909052 - PDF; 9909052 - PDF; External link: hep-ex/9909052 PDF - Please contact the library if you need to access this document.
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9.
Search for Chargino and Neutralino Production at $\sqrt{s} = 189 GeV$ at LEP / OPAL Collaboration
A search for charginos and neutralinos, predicted by supersymmetric theories, is performed using a data sample of 182.1 pb-1 taken at a centre-of-mass energy of 189 GeV with the OPAL detector at LEP. No evidence for chargino or neutralino production is found. [...]
hep-ex/9909051; CERN-EP-99-123; CERN-EP-99-123.- Geneva : CERN, 2000 - 22 p. - Published in : Eur. Phys. J. C 14 (2000) 187-198 Fulltext: 9909051 - PDF; arXiv:hep-ex_9909051 - PDF; External link: hep-ex/9909051 PDF - Please contact the library if you need to access this document.
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10.
A Study of Three-Prong $\tau$ Decays with Charged Kaons / OPAL Collaboration
From an analysis of the ionisation energy loss of charged particles selected from a sample of 147926 e+e- -> tau+tau- candidates recorded in the OPAL detector at e+e- centre-of-mass energies near the Z0 resonance, we determine the branching ratios: BR(tau- -> nu_tau K- pi- pi+ (pi0)) = 0.343 +- 0.073 +- 0.031 % BR(tau- -> nu_tau K- pi- K+ (pi0)) = 0.159 +- 0.053 +- 0.020 % where the (pi0) notation refers to decay modes with or without an accompanying pizero. The tau- -> nu_tau K- pi- pi+ (pi0) final states occurring through tau- -> nu_tau K- K_s (pi0) are treated as background in this analysis. [...]
hep-ex/9908013; CERN-EP-99-095; CERN-EP-99-095.- Geneva : CERN, 2000 - 38 p. - Published in : Eur. Phys. J. C 13 (2000) 197-212 Fulltext: arXiv:hep-ex_9908013 - PDF; 9908013 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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