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CERN Document Server Sök i 324 journaler efter:  1 - 10nästaslut  gå till journal: Sökningen tog 0.61 sekunder. 
1.
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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2.
Study of the Solar Anisotropy for Cosmic Ray Primaries of about 200 GeV Energy with the L3+C Muon Detector / L3 Collaboration
Primary cosmic rays experience multiple deflections in the nonuniform galactic and heliospheric magnetic fields which may generate anisotropies. A study of anisotropies in the energy range between 100 and 500 GeV is performed. [...]
CERN-PH-EP-2008-009.- Geneva : CERN, 2008 - Published in : Astron. Astrophys. 488 (2008) 1093-1100 Fulltext: PDF;
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3.
Efficiency of Finding Muon Track Trigger Primitives in CMS Cathode Strip Chambers / Acosta, Darin ; Adam, A ; Andreev, Valeri ; Apollinari, Giorgio ; Baek, Yong Wook ; Banicz, Karoly ; Barashko, Victor ; Barberis, Emanuela ; Bartalini, Paolo ; Bloch, Ingo et al.
In the CMS Experiment, muon detection in the forward direction is accomplished by cathode strip chambers~(CSC). These detectors identify muons, provide a fast muon trigger, and give a precise measurement of the muon trajectory. [...]
CMS-NOTE-2007-031.- Geneva : CERN, 2007 - 14 p. Fulltext: PDF;
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4.
The Solar Flare of the 14th of July 2000 (L3+C detector results) / L3 Collaboration
Several experiments have reported observations on possible correlations between the flux of high energy muons and intense solar flares. If confirmed, these observations would have significant implications for acceleration processes in the heliosphere able to accelerate protons and other ions to energies of at least tens of GeV. [...]
CERN-PH-EP-2006-043.- Geneva : CERN, 2006 - 15 p. - Published in : Astron. Astrophys. 456 (2006) 351-357 Fulltext: PDF;
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5.
A search for flaring Very-High-Energy cosmic-ray sources with the L3+C muon spectrometer / L3 Collaboration
The L3+C muon detector at the Cern electron-position collider, LEP, is used for the detection of very-high-energy cosmic \gamma-ray sources through the observation of muons of energies above 20, 30, 50 and 100 GeV. Daily or monthly excesses in the rate of single-muon events pointing to some particular direction in the sky are searched for. [...]
CERN-PH-EP-2006-036.- Geneva : CERN, 2006 - 22 p. - Published in : Astropart. Phys. 25 (2006) 298-310 Fulltext: PDF;
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6.
Measurement of the Running of the Electromagnetic Coupling at Large Momentum-Transfer at LEP / L3 Collaboration
The evolution of the electromagnetic coupling, alpha, in the momentum-transfer range 1800GeV^2 < -Q^2 < 21600GeV^2 is studied with about 40000 Bhabha-scattering events collected with the L3 detector at LEP at centre-of-mass energies 189-209GeV. The running of alpha is parametrised as: alpha(Q^2) = alpha_0/(1-C Delta alpha(Q^2)), where alpha_0=\alpha(Q^2=0) is the fine-structure constant and C=1 corresponds to the evolution expected in QED. [...]
hep-ex/0507078; CERN-PH-EP-2005-021; CERN-L3-301; CERN-PH-EP-2005-021.- Geneva : CERN, 2005 - 18 p. - Published in : Phys. Lett. B 623 (2005) 26-36 Fulltext: 0507078 - PDF; arXiv:hep-ex_0507078 - PDF; S0370269305010439 - XML; External link: Preprint
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7.
Measurement of the photon structure function F2 gamma with the L3 detector at LEP / L3 Collaboration
The e+e- -> e+e- hadrons reaction, where one of the two electrons is detected in a low polar-angle calorimeter, is analysed in order to measure the hadronic photon structure function F2gamma . The full high-energy and high-luminosity data set, collected with the L3 detector at centre-of-mass energies 189-209GeV, corresponding to an integrated luminosity of 608/pb is used. [...]
hep-ex/0507042; CERN-PH-EP-2005-004; CERN-L3-295; CERN-PH-EP-2005-004.- Geneva : CERN, 2005 - 24 p. - Published in : Phys. Lett. B 622 (2005) 265-276 Fulltext: arXiv:hep-ex_0507042 - PDF; 0507042 - PDF; External link: Preprint
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8.
Measurement of Branching Fractions of $\tau$ Hadronic Decays / L3 Collaboration
Using data collected with the L3 detector at LEP at the Z peak, the branching fractions of the $\tau$ lepton into the hadronic final states, $h^- n\pi^0 \nu(n=0,1,2, >= 3)$ and $h^-h^+h^- n\pi^0 \nu$ where $h^\pm$ denotes a charged hadron, are measured to be .....
CERN-EP-2003-019 ; CERN-L3-270. - 2003. - 17 p.
Fulltext - Fulltext
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9.
Measurement of the Shadowing of High-Energy Cosmic Rays by the Moon : A Search for TeV-Energy Antiprotons / L3 Collaboration
The shadowing of high-energy cosmic rays by the Moon has been observed with a significance of 9.4 standard deviations with the L3+C muon spectrometer at CERN. A significant effect of the Earth magnetic field is observed. [...]
astro-ph/0503472; CERN-PH-EP-2004-076.- Geneva : CERN, 2005 - 24 p. - Published in : Astropart. Phys. 23 (2005) 411-434 Fulltext: arXiv:astro-ph_0503472 - PDF; phep-2004-076 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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10.
Exclusive $\pi^{+}\pi^{-}\pi^{+}\pi^{-}$ and $\pi^{+}\pi^{0}\pi^{-} \pi^{0}$ production in two photon collisions at L3 / Fedin, O ; Nesterov, S ; Sultanov, G G ; Vorobev, I
Exclusive rho /sup 0/ rho /sup 0/ and rho /sup +/ rho /sup -/ production in two-photon collisions for quasi-real photons and rho /sup 0/ rho /sup 0/ production, involving highly virtual photons, was measured by the L3 experiment at LEP. The spin-parity-helicity analysis of rho /sup 0/ rho /sup 0/ and rho /sup +/ rho /sup -/ systems at Q/sup 2/ approximately= 0 was performed. [...]
2004 - Published in : Nucl. Phys. B, Proc. Suppl. 126 (2004) 283-8
In : International Conference on the Structure and Interactions of the Photon, Frascati, Italy, 7 - 11 Apr 2003, pp.283-8
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