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CERN Document Server 292 εγγραφές βρέθηκαν  1 - 10επόμενοτέλος  μετάβαση στην εγγραφή: Η έρευνα πήρε 0.81 δευτερόλεπτα. 
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
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
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
4.
Neutral heavy lepton analysis / OPAL Collaboration
CERN-OPAL-PN-005 ; OPAL-PN-005.
- 1990. - 11 p.
Fulltext
5.
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.
6.
A Study of One-Prong Tau Decays with a Charged Kaon / OPAL Collaboration
From an analysis of the ionisation energy loss of charged particles selected from 110326 e+e- -> tau+tau- candidates recorded by the OPAL detector at e+e- centre-of-mass energies near the Z0 resonance, we determine the one-prong tau decay branching ratios: Br(tau- -> nu_tau K- >=0h0) = 1.528 +- 0.039 +- 0.040 % Br(tau- -> nu_tau K-) = 0.658 +- 0.024 +- 0.029 % where the h0 notation refers to a pi0, an eta, a K^0_S, or a K^0_L, and where the first uncertainty is statistical and the second is systematic..
hep-ex/0009017; CERN-EP-2000-091; OPAL-PR-315; CERN-EP-2000-091.- Geneva : CERN, 2001 - 31 p. - Published in : Eur. Phys. J. C 19 (2001) 653-665 Fulltext: 0009017 - PDF; arXiv:hep-ex_0009017 - PDF; External link: Preprint - Please contact the library if you need to access this document.
7.
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.
8.
Multiplicities of $\pi^{0}$, $\eta$, $K^{0}$ and of charged particles in quark and gluon jets / OPAL Collaboration
We compared the multiplicities of pizero, eta, Kzero and of charged particles in quark and gluon jets in 3-jet events, as measured by the OPAL experiment at LEP. The comparisons were performed for distributions unfolded to 100% pure quark and gluon jets, at an effective scale Qjet which took into account topological dependences of the 3-jet environment. [...]
hep-ex/0007017; CERN-EP-2000-070; CERN-EP-2000-070.- Geneva : CERN, 2000 - 33 p. - Published in : Eur. Phys. J. C 17 (2000) 373-387 Fulltext: 0007017 - PDF; arXiv:hep-ex_0007017 - PDF; External links: Fulltext; Rivet analyses reference
In : 8th International Euroconference on Quantum Chromodynamics, Montpellier, France, 6 - 13 Jul 2000, pp.59-63 - Please contact the library if you need to access this document.
9.
Search for Trilinear Neutral Gauge Boson Couplings in $Z\gamma$ production at $\sqrt{s}$=189 GeV at LEP / OPAL Collaboration
The data recorded at a centre-of-mass energy of 189GeV by the OPAL detector at LEP are used to search for trilinear couplings of the neutral gauge bosons in the process e+e- --> Z-gamma. The cross-sections are measured for multihadronic events with an energetic isolated photon and for events with a high energy photon accompanied by missing energy. [...]
hep-ex/0007016; CERN-EP-2000-067; CERN-EP-2000-067.- Geneva : CERN, 2000 - 26 p. - Published in : Eur. Phys. J. C 17 (2000) 553-566 Fulltext: 0007016 - PDF; arXiv:hep-ex_0007016 - PDF; External link: Preprint - Please contact the library if you need to access this document.
10.
First Measurement of the Inclusive Branching Ratio of b Hadrons $\to \phi$ Mesons in $Z^{0}$ Decays / OPAL Collaboration
The inclusive production rate of phi mesons from the decay of b hadrons produced in Z0 decays was measured to be Br(b->phi+X) = 0.0282+-0.0013(stat.)+-0.0019(syst.), using data collected by the OPAL detector at LEP..
hep-ex/0007015; CERN-EP-2000-065; CERN-EP-2000-065.- Geneva : CERN, 2000 - 13 p. - Published in : Phys. Lett. B 492 (2000) 13-22 Fulltext: 0007015 - PDF; arXiv:hep-ex_0007015 - PDF; External link: Preprint - Please contact the library if you need to access this document.

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