CERN Accelerating science

CERN Document Server Znaleziono 127 rekordów  1 - 10następnykoniec  skocz do rekordu: Szukanie trwało 0.67 sekund. 
1.
The Alpha Magnetic Spectrometer (AMS) on the International Space Station. I: Results from the test flight on the space shuttle / AMS Collaboration
The Alpha Magnetic Spectrometer (AMS) was flown on the space shuttle Discovery during flight STS-91 (June 1998) in a 51.7° orbit at altitudes between 320 and 390 km . A search for antihelium nuclei in the rigidity range 1– 140 GV was performed. [...]
2002 - 75 p. - Published in : Phys. Rep. 366 (2002) 331-405
- Published in : Phys. Rep. 380 (2003) 97-98
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
3.
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;
4.
Analysis of the $\pi^+ \pi^- \pi^+ \pi-$ and $\pi^+ \pi^{0}\pi^- \pi^{0}$ final states in quasi-real two-photon collisions at LEP / L3 Collaboration
The reactions gamma gamma -> pi^+pi^-pi^+pi^- and gamma gamma -> pi^+pi^0pi^-pi^0 are studied with the L3 detector at LEP in a data sample collected at centre-of-mass energies from 161GeV to 209GeV with a total integrated luminosity of 698/pb. A spin-parity-helicity analysis of the rho^0 rho^0 and rho^+ rho^- systems for two-photon centre-of-mass energies between 1GeV and 3GeV shows the dominance of the spin-parity state 2+ with helicity 2. [...]
hep-ex/0605021; CERN-PH-EP-2005-058; hep-ex/0605021; CERN-L3-306; CERN-PH-EP-2005-058.- 2006 - 19 p. - Published in : Phys. Lett. B 638 (2006) 128-139 Fulltext: cer-002667238 - PDF; arXiv:hep-ex_0605021 - PDF; External link: Preprint
5.
Study of inclusive strange-baryon production and search for pentaquarks in two-photon collisions at LEP / L3 Collaboration
Measurements of inclusive production of the Lambda, Xi- and Xi*(1530) baryons in two-photon collisions with the L3 detector at LEP are presented. The inclusive differential cross sections for Lambda and Xi- are measured as a function of the baryon transverse momentum, pt, and pseudo-rapidity, eta. [...]
hep-ex/0609054; CERN-PH-EP-2006-028; CERN-L3-308; CERN-PH-EP-2006-028.- Geneva : CERN, 2007 - 31 p. - Published in : Eur. Phys. J. C 49 (2007) 395-410 Fulltext: arXiv:hep-ex_0609054 - PDF; 0609054 - PDF; External link: Preprint
6.
Measurement of hadron and lepton-pair production in $e^{+}e^{-}$ collisions at $\sqrt{s} = 192 - 208 GeV$ at LEP / L3 Collaboration
Hadron production and lepton-pair production in e+e- collisions are studied with data collected with the L3 detector at LEP at centre-of-mass energies sqrt{s}=192-208GeV. Using a total integrated luminosity of 453/pb, 36057 hadronic events and 12863 lepton-pair events are selected. [...]
hep-ex/0603022; CERN-PH-EP-2005-044; CERN-EP-PH-2005-044; CERN-EP-PH-2005-044-[SIC!]; CERN-L3-302; CERN-PH-EP-2005-044.- Geneva : CERN, 2006 - 38 p. - Published in : Eur. Phys. J. C 47 (2006) 1-19 Fulltext: 0603022 - PDF; arXiv:hep-ex_0603022 - PDF; External link: Preprint
7.
Measurement of the mass and the width of the W boson at LEP / L3 Collaboration
The mass and the total decay width of the W boson are measured with the L3 detector at the LEP e+e- collider using W-boson pairs produced in 0.7/fb of data collected at centre-of-mass energies between 161 and 209GeV. Combining semi-leptonic and fully-hadronic final states, the mass and the width of the W boson are determined to be mW = 80.270 +/- 0.046 +/- 0.031 GeV and GW = 2.18 +/- 0.11 +/- 0.09 GeV, where the first uncertainty is statistical and the second systematic..
hep-ex/0511049; CERN-PH-EP-2005-043; CERN-L3-303; CERN-PH-EP-2005-043.- Geneva : CERN, 2006 - 37 p. - Published in : Eur. Phys. J. C 45 (2006) 569-587 Fulltext: cer-002580303 - PDF; arXiv:hep-ex_0511049 - PDF; External link: Preprint
8.
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
9.
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
10.
Measurement of the cross section for open-beauty production in photon-photon collisions at LEP / L3 Collaboration
The cross section for open-beauty production in photon-photon collisions is measured using the whole high-energy and high-luminosity data sample collected by the L3 detector at LEP. This corresponds to 627/pb of integrated luminosity for electron-positron centre-of-mass energies from 189GeV to 209GeV. [...]
hep-ex/0507041; CERN-PH-EP-2005-007; CERN-L3-297; CERN-PH-EP-2005-007.- Geneva : CERN, 2005 - 16 p. - Published in : Phys. Lett. B 619 (2005) 71-81 Fulltext: arXiv:hep-ex_0507041 - PDF; 0507041 - PDF; External link: Preprint

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