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CERN Document Server Намерени са 169 записа  1 - 10следващкрай  отиване на запис: Търсенето отне 0.56 секунди. 
1.
Jet rates in e+ e- annihilation between s**(1/2) = 22-GeV and 172-GeV / Pfeifenschneider, P (Aachen, Tech. Hochsch.) /OPAL
1997 - 2 p. - Published in : (1997) , pp. 305-306 Fulltext: PDF;
In : 32nd Rencontres de Moriond, Les Arcs, France, 22 - 29 Mar 1997, pp.305-306
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2.
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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3.
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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4.
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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5.
Precise Determination of the Z Resonance Parameters at LEP : Zedometry / OPAL Collaboration
This final analysis of hadronic and leptonic cross-sections and of leptonic forward-backward asymmetries in e+e- collisions with the OPAL detector makes use of the full LEP1 data sample comprising 161 pb^-1 of integrated luminosity and 4.5 x 10^6 selected Z decays. An interpretation of the data in terms of contributions from pure Z exchange and from Z-gamma interference allows the parameters of the Z resonance to be determined in a model-independent way. [...]
hep-ex/0012018; CERN-EP-2000-148; OPAL-PR-328; CERN-EP-2000-148.- Geneva : CERN, 2001 - 120 p. - Published in : Eur. Phys. J. C 19 (2001) 587-651 Fulltext: arXiv:hep-ex_0012018 - PDF; 0012018 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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6.
A Study of $B_{s}$ Meson Oscillation Using $D_{s}^{-}$-Lepton Correlations / OPAL Collaboration
From data collected around the Z resonance by the OPAL detector at LEP a sample of Bs decays was obtained using Ds^-l^+ combinations, where the Ds^- was fully reconstructed in the phi pi-, K*0K- and Ks0K- decay channels or partially reconstructed in the phi l- nu (X) decay channel. These events were used to study Bs oscillation. [...]
hep-ex/0011052; CERN-EP-2000-136; OPAL-PR-327; CERN-EP-2000-136.- Geneva : CERN, 2001 - 30 p. - Published in : Eur. Phys. J. C 19 (2001) 241-256 Fulltext: 0011052 - PDF; arXiv:hep-ex_0011052 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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7.
Charged Multiplicities in Z Decays into u, d, and s Quarks / OPAL Collaboration
About 4.4 million hadronic decays of Z bosons, recorded by the OPAL detector at LEP at a centre-of-mass energy of around sqrt(s) = 91.2 GeV, are used to determine the mean charged particle multiplicities for the three light quark flavours. Events from primary u, d, and s quarks are tagged by selecting characteristic particles which carry a large fraction of the beam energy. [...]
hep-ex/0011022; CERN-EP-2000-128; CERN-EP-2000-128.- Geneva : CERN, 2001 - 24 p. - Published in : Eur. Phys. J. C 19 (2001) 257-268 Fulltext: arXiv:hep-ex_0011022 - PDF; 0011022 - PDF; External links: Fulltext; Rivet analyses reference - Please contact the library if you need to access this document.
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8.
Investigation of the Decay of Orbitally-Excited B Mesons and First Measurement of the Branching Ratio $BR(B^{*}_{J} \rightarrow B^{*}\pi(X))$ / OPAL Collaboration
From about 4 million hadronic Z decays recorded by the OPAL detector on and near to the Z resonance, we select a sample of more than 570000 inclusively reconstructed B mesons. Orbitally-excited mesons B*J are reconstructed using Bpi+- combinations. [...]
hep-ex/0010031; CERN-EP-2000-125; CERN-EP-2000-125.- Geneva : CERN, 2002 - 47 p. - Published in : Eur. Phys. J. C 23 (2002) 437-54 Fulltext: 0010031 - PDF; arXiv:hep-ex_0010031 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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9.
Production rate of $b\overline{b}$ quark pairs from gluons and $b\overline{b}b\overline{b}$ events in hadronic Z decays / OPAL Collaboration
The rates are measured per hadronic Z decay for gluon splitting to bb(bar) quark pairs, g_bb, and of events containing two bb(bar) quark pairs, g_4b, using a sample of four-jet events selected from data collected with the OPAL detector. Events with an enhanced signal of gluon splitting to bb(bar) quarks are selected if two of the jets are close in phase-space and contain detached secondary vertices [...]
hep-ex/0010029; CERN-EP-2000-123; CERN-EP-2000-123.- Geneva : CERN, 2001 - 23 p. - Published in : Eur. Phys. J. C 18 (2001) 447-460 Fulltext: arXiv:hep-ex_0010029 - PDF; 0010029 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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10.
Measurement of the $B^0$ Lifetime and Oscillation Frequency using $\overline{B}^{0} \to D^{*+}l^{-}\overline{\nu}$ decays / OPAL Collaboration
The lifetime and oscillation frequency of the B0 meson has been measured using B0->D*+l-v decays recorded on the Z0 peak with the OPAL detector at LEP. The D*+ -> D0pi+ decays were reconstructed using an inclusive technique and the production flavour of the B0 mesons was determined using a combination of tags from the rest of the event. [...]
hep-ex/0010013; CERN-EP-2000-090; CERN-EP-2000-90; CERN-EP-2000-090.- Geneva : CERN, 2000 - 18 p. - Published in : Phys. Lett. B 493 (2000) 266 Fulltext: 0010013 - PDF; arXiv:hep-ex_0010013 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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123 Pfeifenschneider, P.
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