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CERN Document Server Encontrados 2,048 registros  1 - 10siguientefinal  ir al registro: La búsqueda tardó 1.33 segundos. 
1.
(100)
Measurement of the Cross Section of W-boson pair production at LEP / L3 Collaboration
The cross section of W-boson pair-production is measured with the L3 detector at LEP. In a data sample corresponding to a total luminosity of 629.4/pb, collected at centre-of-mass energies ranging from 189 to 209 GeV, 9834 four-fermion events with W bosons decaying into hadrons or leptons are selected. [...]
hep-ex/0409016; CERN-PH-EP-2004-026; CERN-L3-291; CERN-PH-EP-2004-026.- Geneva : CERN, 2004 - 27 p. - Published in : Phys. Lett. B 600 (2004) 22-40 Fulltext: arXiv:hep-ex_0409016 - PDF; 0409016 - PDF; S0370269304012493 - XML; External link: Preprint - Please contact the library if you need to access this document.
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2.
(91)
Measurement of the W-Pair Production Cross Section and W-Decay Branching Fractions in $e^{+}e^{-}$ Interactions at $\sqrt{s}$= 189 GeV / L3 Collaboration
The data collected by the L3 experiment at LEP at a centre-of-mass energy of $188.6~\rm{Ge\kern -0.1em V}$ are used to measure the W-pair production cross section and the W-boson decay branching fractions. These data correspond to an integrated luminosity of 176.8~pb$^{-1}$. [...]
hep-ex/0008026; CERN-EP-2000-104; CERN-EP-2000-104; CERN-L3-218.- Geneva : CERN, 2000 - 22 p. - Published in : Phys. Lett. B 496 (2000) 19-33 Fulltext: arXiv:hep-ex_0008026 - PDF; ep-2000-104 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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3.
(87)
Measurement of the mass and the width of the W boson at LEP / L3 Collaboration
The mass and the total decay width of the W boson are measured with the L3 detector at the LEP e+e- collider using W-boson pairs produced in 0.7/fb of data collected at centre-of-mass energies between 161 and 209GeV. Combining semi-leptonic and fully-hadronic final states, the mass and the width of the W boson are determined to be mW = 80.270 +/- 0.046 +/- 0.031 GeV and GW = 2.18 +/- 0.11 +/- 0.09 GeV, where the first uncertainty is statistical and the second systematic..
hep-ex/0511049; CERN-PH-EP-2005-043; CERN-L3-303; CERN-PH-EP-2005-043.- Geneva : CERN, 2006 - 37 p. - Published in : Eur. Phys. J. C 45 (2006) 569-587 Fulltext: cer-002580303 - PDF; arXiv:hep-ex_0511049 - PDF; External link: Preprint
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4.
(85)
Study of the $e^{+}e^{-}\to Ze^{+}e^{-}$ Process at LEP / L3 Collaboration
The cross section of the process $\rm e^+e^-\rightarrow Ze^+e^-$ is measured with ~0.7\,fb$^{-1}$ of data collected with the L3 detector at LEP. Decays of the Z boson into quarks and muons are considered at centre-of-mass energies ranging from $183$ GeV up to $209$ GeV. [...]
hep-ex/0303041; CERN-EP-2002-103; CERN-EP-2002-103; CERN-L3-263.- Geneva : CERN, 2003 - 12 p. - Published in : Phys. Lett. B 561 (2003) 73-81 Fulltext: ep-2002-103 - PDF; S0370269303004064 - XML; arXiv:hep-ex_0303041 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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5.
(78)
Production of Single W Bosons at $\sqrt{s}$ = 189 GeV and Measurement of WW$\gamma$ Gauge Couplings / L3 Collaboration
Single W boson production in electron-positron collisions is studied with the L3 detector at LEP. The data sample collected at a centre-of-mass energy of $\sqrt{s} = 188.7 \mathrm{\ Ge\kern -0.1em V}{}$ corresponds to an integrated luminosity of $176.4\,\mbox{pb$^{-1}$}$. [...]
hep-ex/0007005; CERN-EP-2000-066; CERN-EP-2000-066; CERN-L3-212.- Geneva : CERN, 2000 - 17 p. - Published in : Phys. Lett. B 487 (2000) 229-240 Fulltext: ep-2000-066 - PDF; arXiv:hep-ex_0007005 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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6.
(77)
Determination of $\gamma/Z$ interference in $e^+ e^-$ annihilation at LEP / L3 Collaboration
An S--Matrix ansatz is used to determine the mass and width of the Z boson, aswell as the contributions of $\gamma$/Z interference and Z boson exchange tofermion--pair production. For this purpose we use hadron and lepton--pair production cross sections and lepton forward--backward asymmetries that havebeen measured with the L3 detector at centre--of--mass energies between87~Ge\kern -0.1em V\ and 189~Ge\kern -0.1em V..
hep-ex/0007006; CERN-EP-2000-084; CERN-EP-2000-84; CERN-EP-2000-084; CERN-L3-214.- Geneva : CERN, 2000 - 13 p. - Published in : Phys. Lett. B 489 (2000) 93-101 Fulltext: ep-2000-084 - PDF; arXiv:hep-ex_0007006 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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7.
(76)
Production of Single W Bosons at LEP and Measurement of $WW\gamma$ Gauge Coupling Parameters / L3 Collaboration
\documentclass[12pt,a4paper,dvips]{article} \begin{document} \begin{center} {Production of Single W Bosons at LEP and \\ Measurement of \boldmath$\rm W W \gamma$ Gauge Coupling Parameters} \end{center} \begin{abstract} Single W boson production in electron-positron collisions is studied with the L3 detector at centre-of-mass energies between $192\mathrm{\ Ge\kern -0.1em V}$ and $209\mathrm{\ Ge\kern -0.1em V}$. Events with two acoplanar hadronic jets or a single energetic lepton are selected, and the single W cross section is measured [...]
hep-ex/0209015; CERN-EP-2002-064; CERN-EP-2002-064; CERN-L3-258.- Geneva : CERN, 2002 - 20 p. - Published in : Phys. Lett. B 547 (2002) 151-163 Fulltext: arXiv:hep-ex_0209015 - PDF; S0370269302027685 - XML; ep-2002-064 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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8.
(75)
Measurement of Hadron and Lepton-Pair Production at 130 GeV $ < \sqrt{s} < $ 189 GeV at LEP / L3 Collaboration
We report on measurements of $\mathrm{e^{+}e^{-}}$ annihilation into hadronsand lepton pairs.The data have been collected with the L3 detector at LEP at centre-of-massenergies between 130 and 189~\textrm{Ge\kern -0.1em V}.Using a total integrated luminosity of 243.7~pb$^{-1}$, 25864 hadronic and 8573lepton-pair events are selected for the measurement of cross sections and leptonicforward-backward asymmetries. The results are in good agreement with Standard Model predictions..
hep-ex/0002034; CERN-EP-99-181; CERN-EP-99-181; CERN-L3-196.- Geneva : CERN, 2000 - 24 p. - Published in : Phys. Lett. B 479 (2000) 101-117 Fulltext: ep-1999-181 - PS.GZ; arXiv:hep-ex_0002034 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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9.
(74)
Measurement of the $e^{+}e^{-} \to Z\gamma\gamma$ Cross Section and Determination of Quartic Gauge Boson Couplings at LEP / L3 Collaboration
A first measurement of the cross section of the process$\rm e^+e^-\rightarrow Z\gamma\gamma$ is reported using a total integrated luminosity of 231\,pb$^{-1}$collected with the L3 detector at centre-of-mass energiesof 182.7\,GeV and 188.7\,GeV. By selectinghadronic events with two isolated photonsthe $\rm e^+e^-\rightarrow Z\gamma\gamma$cross section is measured to be$ 0.49^{+0.20}_{-0.17}\pm0.04\,{\mathrm{pb}}$ at 182.7\,GeV and $0.47 \pm 0.10\pm0.04\,{\mathrm{pb}}$ at 188.7\,GeV. [...]
hep-ex/0002037; CERN-EP-2000-006; CERN-EP-2000-006; CERN-L3-199.- Geneva : CERN, 2000 - 14 p. - Published in : Phys. Lett. B 478 (2000) 39-49 Fulltext: ep-2000-006 - PS.GZ; arXiv:hep-ex_0002037 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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10.
(74)
Direct Observation of Longitudinally Polarised $W^{\pm}$ Bosons / L3 Collaboration
The three different helicity states of W bosons, produced in the reaction $e^+e^- \rightarrow W^+W^- \rightarrow \ell \nu q \overline{q}$are studied using leptonic and hadronic W decaysat $\sqrt{s}$ = 183 GeV and 189 GeV. The W polarisation is also measured as a function of the scattering angle between the $W^-$ and the direction of the $e^-$ beam. [...]
hep-ex/0001016; CERN-EP-99-176; CERN-EP-99-176; CERN-L3-195.- Geneva : CERN, 2000 - 17 p. - Published in : Phys. Lett. B 474 (2000) 194-204 Fulltext: ep-99-176 - PDF; arXiv:hep-ex_0001016 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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