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CERN Document Server 2,048 record trovati  1 - 10successivofine  salta al record: La ricerca ha impiegato 1.22 secondi. 
1.
(100)
Search for a massive diphoton resonance at $\sqrt{s}$ = 91-172 GeV / OPAL Collaboration
A search for the resonant production of high mass photon pairs associated with a leptonic or hadronic system has been performed using a total data sample of 25.7 pb^-1 taken at centre-of-mass energies between 130 GeV and 172 GeV with the OPAL detector at LEP. The observed number of events is consistent with the expected number from Standard Model processes. [...]
hep-ex/9709022; CERN-PPE-97-121; CERN-PPE-97-121.- Geneva : CERN, 1998 - 30 p. - Published in : Eur. Phys. J. C Fulltext: 9709022 - PDF; arXiv:hep-ex_9709022 - PDF; External link: hep-ex/9709022 PDF - Please contact the library if you need to access this document.
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2.
(91)
Determination of the $e^+ e^- \to \gamma \gamma (\gamma)$ cross-section at LEP 2 / DELPHI Collaboration
A test of the benchmark QED process e+e- -> gamma gamma (gamma) is reported, using the data collected with the DELPHI detector at LEP 2. The data analysed were recorded at centre-of-mass energies ranging from 161 GeV to 208 GeV and correspond to a total integrated luminosity of 656.4 pb^{-1}. [...]
hep-ex/0409058; CERN-PH-EP-2004-017; CERN-PH-EP-2004-017.- Geneva : CERN, 2004 - 24 p. - Published in : Eur. Phys. J. C 37 (2004) 405-419 Fulltext: arXiv:hep-ex_0409058 - PDF; 0409058 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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3.
(89)
Study of Triple-Gauge-Boson Couplings ZZZ, ZZ$\gamma$ and Z$\gamma\gamma$ at LEP / DELPHI Collaboration
Neutral triple-gauge-boson couplings ZZZ, ZZgam and Zgamgam have been studied with the DELPHI detector using data at energies between 183 and 208 GeV. Limits are derived on these couplings from an analysis of the reactions e+e- -> Zgam, using data from the final states gamma f fbar, with f = q or neutrino, from e+e- -> ZZ, using data from the four-fermion final states q qbar q qbar, q qbar mu+ mu-, q qbar e+ e-, q qbar nu nubar, mu+ mu- nu nubar and e+ e- nu nubar, and from e+e- -> Zgam*, in which the final state gamma is off mass-shell, using data from the four-fermion final states q qbar e+ e- and q qbar mu+ mu-. [...]
arXiv:0706.2741; HEP-PH-EP-2006-008; CERN-PH-EP-2006-008.- Geneva : CERN, 2007 - 29 p. - Published in : Eur. Phys. J. C 51 (2007) 525-542 Fulltext: PDF; External link: Fulltext
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4.
(89)
Photon Events with Missing Energy in $e^{+}e^{-}$ Collisions at $\sqrt{s}$ = 130 to 209 GeV / DELPHI Collaboration
The production of single- and multi-photon events has been studied in the reaction e+e- -> gamma (gamma) + invisible particles. The data collected with the DELPHI detector during the years 1999 and 2000 at centre-of-mass energies between 191 GeV and 209 GeV was combined with earlier data to search for phenomena beyond the Standard Model. [...]
hep-ex/0406019; CERN-EP-2003-093; CERN-EP-2003-093.- Geneva : CERN, 2005 - 33 p. - Published in : Eur. Phys. J. C 38 (2005) 395-411 Fulltext: arXiv:hep-ex_0406019 - PDF; 0406019 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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5.
(88)
Search for anomalous production of photonic events with missing energy in $e^+ e^-$ collisions at $\sqrt{s}$ = 130-172 GeV / OPAL Collaboration
Photonic events with large missing energy have been observed in e+e- collisions at centre-of-mass energies of 130, 136, 161 and 172 GeV using the OPAL detector at LEP. Results are presented based on search topologies designed to select events with a single photon and missing transverse energy or events with a pair of acoplanar photons. [...]
hep-ex/9801024; CERN-PPE-97-132; CERN-PPE-97-132.- Geneva : CERN, 1998 - 40 p. - Published in : Eur. Phys. J. C 2 (1998) 607-625 Fulltext: arXiv:hep-ex_9801024 - PDF; 9801024 - PDF; External link: hep-ex/9801024 PDF - Please contact the library if you need to access this document.
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6.
(86)
Multi-photon final states in $e^+ e^-$ collisions at $\sqrt{s}$ = 130-172 GeV / OPAL Collaboration
The process e^+e^- -> gamma gamma (gamma) is studied using data recorded with the OPAL detector at LEP. The data sample corresponds to a total integrated luminosity of 25.38 pb^{-1} taken at centre-of-mass energies of 130-172 GeV. [...]
hep-ex/9709002; CERN-PPE-97-109; CERN-PPE-97-109.- Geneva : CERN, 1998 - 25 p. - Published in : Eur. Phys. J. C 1 (1998) 21-30 Fulltext: 9709002 - PDF; arXiv:hep-ex_9709002 - PDF; External link: hep-ex/9709002 PDF - Please contact the library if you need to access this document.
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7.
(84)
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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8.
(83)
Measurement of the W-pair Production Cross-section and W Branching Ratios in $e^+ e^-$ Collisions at $\sqrt{s}$ = 161-209 GeV / DELPHI Collaboration
These final results on e+e- -> W+W- production cross-section measurements at LEP2 use data collected by the DELPHI detector at centre-of-mass energies up to 209 GeV. Measurements of total cross-sections, W angular differential distributions and decay branching fractions, and the value of the CKM element |V_{cs}| are compared to the expectations of the Standard Model. [...]
hep-ex/0403042; CERN-EP-2003-071; CERN-EP-2003-071.- Geneva : CERN, 2004 - 33 p. - Published in : Eur. Phys. J. C 34 (2004) 127-144 Fulltext: PDF; External link: Preprint - Please contact the library if you need to access this document.
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9.
(82)
Search for Higgs bosons and new particles decaying into two photons at $\sqrt{s}$ = 183 GeV / OPAL Collaboration
A search for the resonant production of high mass photon pairs associated with a leptonic or hadronic system has been performed using a data sample of 57.7 pb-1 collected at an average center-of-mass energy of 182.6 GeV with the OPAL detector at LEP. No evidence for contributions from non-Standard Model physics processes was observed. [...]
hep-ex/9808014; CERN-EP-98-093; CERN-EP-98-93; CERN-EP-98-093.- Geneva : CERN, 1998 - 21 p. - Published in : Phys. Lett. B 437 (1998) 218-230 Fulltext: arXiv:hep-ex_9808014 - PDF; 9808014 - PDF; External link: hep-ex/9808014 PDF - Please contact the library if you need to access this document.
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10.
(82)
Measurement of the $e^+ e^- \to W^+ W^-\gamma$ Cross-section and Limits on Anomalous Quartic Gauge Couplings with DELPHI / DELPHI Collaboration
W+W-gamma production at LEP2 is studied using data collected with the DELPHI detector at centre-of-mass energies between 189 GeV and 209 GeV, corresponding to an integrated luminosity of about 600 pb^-1. Cross-sections are measured for the production of W+W- with a hard, central and isolated photon in the final state, and are found to be compatible with the Standard Model prediction. [...]
hep-ex/0311004; CERN-EP-2003-045; CERN-EP-2003-045.- Geneva : CERN, 2003 - 14 p. - Published in : Eur. Phys. J. C 31 (2003) 139-147 Fulltext: 0311004 - PDF; arXiv:hep-ex_0311004 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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