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CERN Document Server 119 registres trobats  1 - 10següentfinal  anar al registre: La cerca s'ha fet en 1.08 segons. 
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
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2.
Search for Charged Higgs bosons: Combined Results Using LEP data / ALEPH, DELPHI, L3 and OPAL Collaborations
The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have searched for pair-produced charged Higgs bosons in the framework of Two Higgs Doublet Models (2HDMs). The data of the four experiments are statistically combined. [...]
arXiv:1301.6065; CERN-PH-EP-2012-369; CERN-PH-EP-2012-369; LHWG-Note-2012-01; ALEPH-2012-001-PHYSICS-2012-001; DELPHI-2012-001-PHYS-953; L3-Note-2835; OPAL-PR433.- Geneva : CERN, 2013 - 18 p. - Published in : Eur. Phys. J. C 73 (2013) 2463 Draft (restricted): PDF; Fulltext: CERN-PH-EP-2012-369 - PDF; arXiv:1301.6065 - PDF; External link: Preprint
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3.
Search for Charged Higgs Bosos in $e^{+}e^{-}$ Collisions at $\sqrt{s}$ = 189-209 GeV / OPAL collaboration
A search is made for charged Higgs bosons predicted by Two-Higgs-Doublet extensions of the Standard Model (2HDM) using electron-positron collision data collected by the OPAL experiment at sqrts=189-209 GeV, corresponding to an integrated luminosity of approximately 600pb-1. Charged Higgs bosons are assumed to be pair-produced and to decay into qq, tnt or AWpm. [...]
arXiv:0812.0267; CERN-PH-EP-2008-016; CERN-PH-EP-2008-016.- Geneva : CERN, 2012-07-24 - 32 p. - Published in : Eur. Phys. J. C 72 (2012) 2076 Fulltext: PDF; External links: Fulltext; Fulltext
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4.
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
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5.
Study of Z Pair Production and Anomalous Couplings in $e^+ e^-$ Collisions at $\sqrt{s}$ between 190 GeV and 209 GeV / OPAL Collaboration
A study of Z-boson pair production in e+e- annihilation at center-of-mass energies between 190 GeV and 209 GeV is reported. Final states containing only leptons, (l+l-l+l- and l+l-nn), quark and lepton pairs, (qql+l-, qqnn) and only hadrons (qqqq) are considered. [...]
hep-ex/0310013; CERN-EP-2003-049; CERN-EP-2003-049.- Geneva : CERN, 2003 - 35 p. - Published in : Eur. Phys. J. C 32 (2003) 303-322 Fulltext: ep-2003-049 - PDF; arXiv:hep-ex_0310013 - PDF; 0310013 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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6.
Measurement of the Strange Spectral Function in Hadronic $\tau$ Decays / OPAL Collaboration
Tau lepton decays with open strangeness in the final state are measured with the OPAL detector at LEP to determine the strange hadronic spectral function of the tau lepton. The decays T- ->(Kpi)-nu tau, (Kpipi)-nu tau and (Kpipipi) -nu tau with final states consisting of neutral and charged kaons and pions have been studied. [...]
hep-ex/0406007; CERN-PH-EP-2004-010; CERN-PH-EP-2004-010.- Geneva : CERN, 2004 - 33 p. - Published in : Eur. Phys. J. C 35 (2004) 437-455 Fulltext: phep-2004-010 - PDF; arXiv:hep-ex_0406007 - PDF; 0406007 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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7.
Search for Chargino and Neutralino Production at $\sqrt{s}$ = 192-209 GeV at LEP / OPAL Collaboration
Approximately 438 pb-1 of e+e- data from the OPAL detector, taken with the LEP collider running at centre-of-mass energies of 192-209 Gev, are analyzed to search for evidence of chargino pair production, e+e- -> tilde chi^+_1 tilde chi^-_1, or neutralino associated production, e+e- -> tilde chi^0_2 tilde chi^0_1. Limits are set at the 95% confidence level on the product of the cross-section for the process e+e- -> tilde chi^+_1 tilde chi^-_1 and its branching ratios to topologies containing jets and missing energy, of jest with a lepton and missing energy, and on the product of the cross-section for e+e- -> tilde chi^0_2 tilde chi^0_1 and its branching ratio to jets. [...]
hep-ex/0401026; CERN-EP-2003-090; CERN-EP-2003-090.- Geneva : CERN, 2004 - 34 p. - Published in : Eur. Phys. J. C 35 (2004) 1-20 Fulltext: 0401026 - PDF; arXiv:hep-ex_0401026 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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8.
W Boson Polarisation at LEP2 / OPAL Collaboration
Elements of the spin density matrix for W bosons in e+e- -> W+W- -> qqln events are measured from data recorded by the OPAL detector at LEP. This information is used calculate polarised differential cross-sections and to search for CP-violating effects. [...]
hep-ex/0312047; CERN-EP-2003-088; CERN-EP-2003-088.- Geneva : CERN, 2004 - 20 p. - Published in : Phys. Lett. B 585 (2004) 223-36 Fulltext: arXiv:hep-ex_0312047 - PDF; ep-2003-088 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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9.
Measurement of the partial widths of the Z into up- and down-type quarks / OPAL Collaboration
Using the entire OPAL LEP1 on-peak Z hadronic decay sample, Z -> qbarq gamma decays were selected by tagging hadronic final states with isolated photon candidates in the electromagnetic calorimeter. Combining the measured rates of Z -> qbarq gamma decays with the total rate of hadronic Z decays permits the simultaneous determination of the widths of the Z into up- and down-type quarks. [...]
hep-ex/0312043; CERN-EP-2003-082; CERN-EP-2003-082.- Geneva : CERN, 2004 - 23 p. - Published in : Phys. Lett. B 586 (2004) 167-182 Fulltext: ep-2003-082 - PDF; arXiv:hep-ex_0312043 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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10.
Flavour independent search for Higgs bosons decaying into hadronic final states in e+e- collisions / OPAL Collaboration
A search for the Higgsstrahlung process e+e- -> hZ is described, where the neutral Higgs boson h is assumed to decay into hadronic final states. In order to be sensitive to a broad range of models, the search is performed independent of the flavour content of the Higgs boson decay. [...]
hep-ex/0312042; CERN-EP-2003-081; CERN-EP-2003-081.- Geneva : CERN, 2004 - 22 p. - Published in : Phys. Lett. B 597 (2004) 11-25 Fulltext: S0370269304009311 - XML; ep-2003-081 - PDF; arXiv:hep-ex_0312042 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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CERN Document Server : 119 registres trobats   1 - 10següentfinal  anar al registre:
Vegeu també: autors amb noms similars
4 Okpara, A
8 Okpara, A N
1 Okpara, A.N.
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