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CERN Document Server 204 records found  1 - 10nextend  jump to record: Search took 0.72 seconds. 
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.
Tests of QCD from Jet and Hadron Production at LEP / del Pozo, L A
RALT-002. - Chilton : RAL, 1993.
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5.
A Measurement of $R_{b}$ using a Double Tagging Method / OPAL Collaboration
The fraction of Z to bbbar events in hadronic Z decays has been measured by the OPAL experiment using the data collected at LEP between 1992 and 1995. The Z to bbbar decays were tagged using displaced secondary vertices, and high momentum electrons and muons. [...]
hep-ex/9810002; CERN-EP-98-137; CERN-EP-98-137.- Geneva : CERN, 1999 - 40 p. - Published in : Eur. Phys. J. C 8 (1999) 217-39 Fulltext: arXiv:hep-ex_9810002 - PDF; 9810002 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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6.
Search for Anomalous Photonic Events with Missing Energy in $e^{+} e^{-}$ Collisions at $\sqrt{s}$ = 130, 136 and 183 GeV / OPAL Collaboration
Photonic events with large missing energy have been observed in $e^+ e^-$ collisions at centre-of-mass energies of 130, 136 and 183 GeV collected in 1997 using the OPAL detector at LEP. Results are presented for event topologies with a single photon and missing transverse energy or with an acoplanar photon pair. [...]
hep-ex/9810021; CERN-EP-98-143; CERN-EP-98-143.- Geneva : CERN, 1999-03-01 - 19 p. - Published in : Eur. Phys. J. C 8 (1999) 23-40 Fulltext: 9810021 - PDF; arXiv:hep-ex_9810021 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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7.
Measurement of the Semileptonic Branching Ratio of Charm Hadrons Produced in $Z^{0} \to c\bar{c}$ Decays / OPAL Collaboration
The inclusive charm hadron semileptonic branching fractions B(c to e) and B(c to mu) in Z to ccbar events have been determined using 4.4 million hadronic Z decays collected with the OPAL detector at LEP. A charm-enriched sample is obtained by selecting events with reconstructed D*+- mesons. [...]
hep-ex/9810016; CERN-EP-98-146; CERN-EP-98-146.- Geneva : CERN, 1999 - 23 p. - Published in : Eur. Phys. J. C 8 (1999) 573-84 Fulltext: 9810016 - PDF; arXiv:hep-ex_9810016 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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8.
Search for Chargino and Neutralino Production at $\sqrt{s}$ = 181-184 GeV at LEP / OPAL Collaboration
A search for charginos and neutralinos, predicted by supersymmetric theories, has been performed using a data sample of 57 pb-1 at centre-of-mass energies of 181-184 GeV taken with the OPAL detector at LEP. No evidence for chargino or neutralino production has been found. [...]
hep-ex/9809031; CERN-EP-98-136; CERN-EP-98-136.- Geneva : CERN, 1999 - 34 p. - Published in : Eur. Phys. J. C 8 (1999) 255-72 Fulltext: 9809031.fig_14 - PS.GZ; 9809031.fig_15 - PS.GZ; 9809031.fig_16 - PS.GZ; 9809031.fig_17 - PS.GZ; 9809031 - PDF; 9809031.fig_12 - PS.GZ; 9809031.fig_13 - PS.GZ; arXiv:hep-ex_9809031 - PDF; External link: hep-ex/9809031 PDF - Please contact the library if you need to access this document.
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9.
Measurement of the branching fractions and forward-backward asymmetries of the $Z^{0}$ into light quarks / OPAL Collaboration
1997 - Published in : Z. Phys. C 76 (1997) 387-400
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10.
Search for Acoplanar Lepton Pair Events in $e^{+}e^{-}$ Collisions at $\sqrt{s}$ = 161, 172 and 183 GeV / OPAL Collaboration
A selection of di-lepton events with significant missing transverse momentum has been performed using a total data sample of 77.0 pb-1 at e+e- centre-of-mass energies of 161 GeV, 172 GeV and 183 GeV. The observed numbers of events: four at 161 GeV, nine at 172 GeV, and 78 at 183 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/9808036; CERN-EP-98-122; CERN-EP-98-122.- Geneva : CERN, 2000 - 32 p. - Published in : Eur. Phys. J. C 12 (2000) 551-565 Fulltext: arXiv:hep-ex_9808036 - PDF; 9808036 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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