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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： 1.16 秒 
1.
(100)
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.
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2.
(91)
Measurement of Trilinear Gauge Boson Couplings $WWV, (V \equiv Z, \gamma)$ in $e^+ e^-$ Collisions at 189 GeV / DELPHI Collaboration
Measurements of the trilinear gauge boson couplings $WW\gamma$ and $WWZ$ are presented using the data taken by DELPHI in 1998 at a centre-of-mass energy of 189~GeV and combined with DELPHI data at 183~GeV. Values are determined for \Dgz\ and \Dkg, the differences of the $WWZ$ charge coupling and of the $WW\gamma$ dipole coupling from their Standard Model values, and for \lm, the $WW\gamma$ quadrupole coupling. [...]
hep-ex/0102041; CERN-EP-2001-006; CERN-EP-2001-006.- Geneva : CERN, 2001 - 20 p. - Published in : Phys. Lett. B 502 (2001) 9-23 Fulltext: arXiv:hep-ex_0102041 - PDF; ep-2001-006 - PDF; External link: Preprint
In : 30th International Conference on High-energy Physics, Osaka, Japan, 27 Jul - 2 Aug 2000, pp.e-page 372 - Please contact the library if you need to access this document.
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3.
(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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4.
(89)
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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5.
(85)
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.
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6.
(84)
Measurement of $Z/\gamma^{*}$ production in Compton scattering of quasi-real photons / OPAL Collaboration
The process e+ e- -> e+ e- Z/gamma* is studied with the OPAL detector at LEP at a centre of mass energy of sqrt(s) = 189 GeV. The cross-section times the branching ratio of the Z/gamma* decaying into hadrons is measured within Lorentz invariant kinematic limits to be (1.2 +/- 0.3 +/- 0.1) pb for invariant masses of the hadronic system between 5 GeV and 60 GeV and (0.7 +/- 0.2 +/- 0.1) pb for hadronic masses above 60 GeV. [...]
hep-ex/0107047; CERN-EP-2001-053; CERN-EP-2001-053.- Geneva : CERN, 2002 - 35 p. - Published in : Eur. Phys. J. C 24 (2002) 1-15 Fulltext: arXiv:hep-ex_0107047 - PDF; 0107047 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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7.
(82)
Measurements of the Cross Sections for Open Charm and Beauty Production in $\gamma\gamma$ Collisions at $\sqrt{s}$ = 189-202 GeV / L3 Collaboration
The production of c and b quarks in gamma-gamma collisions is studied with the L3 detector at LEP with 410 pb^-1 of data, collected at centre-of-mass energies from 189 GeV to 202 GeV. Hadronic final states containing c and b quarks are identified by detecting electrons or muons from their semileptonic decays. [...]
hep-ex/0011070; CERN-EP-2000-144; CERN-EP-2000-144; CERN-L3-226.- Geneva : CERN, 2001 - 17 p. - Published in : Phys. Lett. B 503 (2001) 10-20 Fulltext: 0011070 - PDF; arXiv:hep-ex_0011070 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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8.
(81)
Measurement of the Charm Production Cross Section in gamma gamma Collisions at LEP / L3 Collaboration
Open charm production in gamma-gamma collisions is studied with data collected at e+e- centre-of-mass energies from 189 GeV to 202 GeV corresponding to a total integrated luminosity of 410 pb-1. The charm cross section sigma(gamma gamma ---> c c~ X) is measured for the first time as a function of the two-photon centre-of-mass energy in the interval from 5 GeV to 70 GeV and is compared to NLO QCD calculations..
hep-ex/0101025; CERN-EP-2000-155; CERN-EP-2000-155; CERN-L3-231.- Geneva : CERN, 2001 - 15 p. - Published in : Phys. Lett. B 514 (2001) 19-28 Fulltext: arXiv:hep-ex_0101025 - PDF; 0101025 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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9.
(81)
Study of Z boson pair production in $e^{+}e^{-}$ collisions at LEP at $\sqrt{s}$ = 189 GeV / L3 Collaboration
The pair production of Z bosons is studied using the data collected by the L3 detector at LEP in 1998 in $\rm e^+e^-$ collisions at a centre--of--mass energy of 189\,GeV. All the visible final states are considered and the cross section of this process is measured to be $0.74^{+0.15}_{-0.14}\,{(\rm stat.)}\,{\pm 0.04}\,{(\rm syst.)}\, \mathrm{pb}$. [...]
hep-ex/9909043; CERN-EP-99-119; CERN-EP-99-119; CERN-L3-183.- Geneva : CERN, 1999 - 16 p. - Published in : Phys. Lett. B 465 (1999) 363-375 Fulltext: ep-99-119 - PDF; arXiv:hep-ex_9909043 - PDF; - Please contact the library if you need to access this document.
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10.
(81)
Single and Multi-Photon Events with Missing Energy in $e^{+}e^{-}$ Collisions at $\sqrt{s}$ = 189 GeV / L3 Collaboration
Single and multi-photon events with missing energy are analysed using data collected with the L3 detector at LEP at a centre-of-mass energy of 189 GeV, for a total of 176 pb$^{-1}$ of integrated luminosity. The cross section of the process $\rm e^+e^-\rightarrow\nu\bar{\nu}\gamma(\gamma)$ is measured and the number of light neutrino flavours is determined to be \( N_\nu = 3.011 \pm 0.077 \) including lower energy data. [...]
hep-ex/9910009; CERN-EP-99-129; CERN-EP-99-129; CERN-L3-188.- Geneva : CERN, 1999 - 22 p. - Published in : Phys. Lett. B 470 (1999) 268-280 Fulltext: arXiv:hep-ex_9910009 - PDF; ep-99-129 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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