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CERN Document Server 2,049 のレコードが見つかりました。  1 - 10次最後  レコードへジャンプ： 検索にかかった時間： 1.72 秒 
1.
(100)
Search for anomalous couplings in the Higgs sector at LEP / L3 Collaboration
We search for a Higgs particle with anomalous couplings in the $\mathrm{e}^+\mathrm{e}^-\rightarrow\mathrm{H}\gamma$, $\mathrm{e}^+\mathrm{e}^-\rightarrow\mathrm{H}\mathrm{Z}$ and $\mathrm{e}^+\mathrm{e}^-\rightarrow\mathrm{H}\mathrm{e}^+\mathrm{e }^-$ processes with the L3 detector at LEP. We explore the mass range $70~{\rm GeV} < m_\mathrm{H} < 170~{\rm GeV}$ using $176~{\rm pb}^{-1}$ of integrated luminosity at a center-of-mass energy of $\sqrt{s} = 189~{\rm GeV}$. [...]
hep-ex/0008023; CERN-EP-2000-098; CERN-EP-2000-098; CERN-L3-216.- Geneva : CERN, 2000 - 18 p. - Published in : Phys. Lett. B 489 (2000) 102-14 Fulltext: ep-2000-098 - PDF; arXiv:hep-ex_0008023 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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2.
(91)
Search for Anomalous Couplings in the Higgs Sector at LEP / L3 Collaboration
Anomalous couplings of the Higgs boson are searched for through the processes e^+ e^- -> H gamma, e^+ e^- -> e^+ e^- H and e^+ e^- -> HZ. The mass range 70 GeV < m_H < 190 GeV is explored using 602 pb^-1 of integrated luminosity collected with the L3 detector at LEP at centre-of-mass energies sqrt(s)=189-209 GeV. [...]
hep-ex/0403037; CERN-PH-EP-2004-002; CERN-EP-PH-2004-02; CERN-L3-285; CERN-PH-EP-2004-002.- Geneva : CERN, 2004 - 19 p. - Published in : Phys. Lett. B 589 (2004) 89-102 Fulltext: arXiv:hep-ex_0403037 - PDF; S0370269304005040 - XML; External link: Preprint - Please contact the library if you need to access this document.
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3.
(91)
Measurement of the $W^{+}W^{-}\gamma$ Cross Section and Direct Limits on Anomalous Quartic Gauge Couplings at LEP / L3 Collaboration
The process e$^+$e$^-\rightarrow {\rm W}^+{\rm W}^-\gamma$ is analysed using the data collected with the L3 detector at LEP at a centre-of-mass energy of $188.6$ GeV, corresponding to an integrated luminosity of 176.8 pb$^{-1}$. Based on a sample of 42 selected ${\rm W}^+{\rm W}^-$ candidates containing an isolated hard photon, the ${\rm W}^+{\rm W}^-\gamma$ cross section, defined within phase-space cuts, is measured to be: $\sigma_{{\rm WW}\gamma} = 290 \pm 80 \pm 16$ fb, consistent with the Standard Model expectation [...]
hep-ex/0008022; CERN-EP-2000-097; CERN-EP-2000-097; CERN-L3-215.- Geneva : CERN, 2000 - 14 p. - Published in : Phys. Lett. B 490 (2000) 187-195 Fulltext: ep-2000-097 - PDF; arXiv:hep-ex_0008022 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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4.
(89)
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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5.
(89)
Search for Anomalous $ZZ\gamma$ and $Z\gamma\gamma$ couplings in the process $e^{+}e^{-} \to Z\gamma$ at LEP / L3 Collaboration
We search for anomalous trilinear gauge couplings in the ${\rm ZZ}\gamma$ and ${\rm Z}\gamma\gamma$ vertices using data collected with the L3 detectorat LEP at a centre--of--mass energy $\sqrt{s}=189$ GeV. No evidence is found and limits on these couplings and on new physics scales are derived from the analysis of the process ${\rm e}^{+}{\rm e}^{-} \rightarrow {\rm Z} \gamma$..
hep-ex/0005024; CERN-EP-2000-057; CERN-EP-2000-057; CERN-L3-208.- Geneva : CERN, 2000 - 17 p. - Published in : Phys. Lett. B 489 (2000) 55-64 Fulltext: ep-2000-057 - PDF; arXiv:hep-ex_0005024 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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6.
(89)
Search for Charged Higgs Bosons in $e^{+}e^{-}$ Collisions at $\sqrt{s}$ = 189 GeV / L3 Collaboration
A search for pair-produced charged Higgs bosons is performed with the L3 detector at LEP using data collected at a centre-of-mass energy of 188.6 GeV, corresponding to an integrated luminosity of 176.4 $\mathrm{pb^{-1}}$. Higgs decays into a charm and a strange quark or into a tau lepton and its associated neutrino are considered. [...]
hep-ex/9909044; CERN-EP-99-120; CERN-EP-99-120; CERN-L3-184.- Geneva : CERN, 1999 - 11 p. - Published in : Phys. Lett. B 466 (1999) 71-78 Fulltext: arXiv:hep-ex_9909044 - PDF; ep-99-120 - PDF; - Please contact the library if you need to access this document.
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7.
(89)
Higgs Candidates in $e^+ e^-$ Interactions at $\sqrt{s}$= 206.6 GeV / L3 Collaboration
In a search for the Standard Model Higgs boson, carried out on 212.5~$\mathrm{pb^{-1}}$ of data collected by the L3 detector at the highest LEP centre-of-mass energies, including 116.5~$\mathrm{pb^{-1}}$ above $\sqrt{s} = 206$~GeV, an excess of candidates for the process $e^+ e^- \rightarrow Z^{*}\rightarrow HZ$ is found for Higgs masses near 114.5~GeV. We present an analysis of our data and the characteristics of our strongest candidates..
hep-ex/0011043; CERN-EP-2000-140; CERN-L3-228.- Geneva : CERN, 2000 - 11 p. - Published in : Phys. Lett. B 495 (2000) 18-25 Fulltext: ep-2000-140 - PDF; arXiv:hep-ex_0011043 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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8.
(86)
Higgs Candidates in $e^{+}e^{-}$ Interactions at $\sqrt{s}$ = 206.6 GeV / L3 Collaboration
In a search for the Standard Model Higgs boson, carried out on 212.5 pb-1 of data collected by the L3 detector at the highest LEP centre-of-mass energies, including 116.5 pb-1 above root(s) = 206GeV, an excess of candidates for the process e+e- -> Z* -> HZ is found for Higgs masses near 114.5GeV. We present an analysis of our data and the characteristics of our strongest candidates..
hep-ex/0011043.- Geneva : CERN, 2000 - Published in : Phys. Lett. B 495 (2000) 18-25 Access to fulltext document: PDF; External link: hep-ex/0011043 PDF
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9.
(84)
Z-boson production with two unobserved, back-to-back, hard photons at LEP / L3 Collaboration
The double-radiative process e+e- -> Z gamma gamma -> q q~ gamma gamma, where the two hard photons escape detection at low polar angles into opposite directions, is studied in 0.62/fb of data collected with the L3 detector at LEP at centre-of-mass energies between 188.6GeV and 209.2GeV. The cross sections are measured and found to be consistent with the Standard Model expectations..
hep-ex/0504015; CERN-PH-EP-2005-006; CERN-L3-296; CERN-PH-EP-2005-006.- Geneva : CERN, 2005 - 15 p. - Published in : Phys. Lett. B 613 (2005) 118-127 Fulltext: 0504015 - PDF; arXiv:hep-ex_0504015 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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10.
(84)
Searches for scalar quarks in $e^{+}e^{-}$ interactions at $\sqrt{s}$= 189 GeV / L3 Collaboration
Searches for scalar top and scalar bottom quarks, as well as for mass-degenerate scalar quarks of the first two families are performed at 189 GeV centre-of-mass energy with the L3 detector at LEP. No signals are observed. [...]
hep-ex/9910020; CERN-EP-99-137; CERN-EP-99-137; CERN-L3-190.- Geneva : CERN, 1999 - 21 p. - Published in : Phys. Lett. B 471 (1999) 308-320 Fulltext: arXiv:hep-ex_9910020 - PDF; ep-99-137 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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