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CERN Document Server 找到 379 筆記錄  1 - 10下一個最後  跳到記錄: 檢索需時 0.66 秒. 
1.
First Result from the Alpha Magnetic Spectrometer on the International Space Station: Precision Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5–350 GeV / AMS Collaboration
A precision measurement by the Alpha Magnetic Spectrometer on the International Space Station of the positron fraction in primary cosmic rays in the energy range from 0.5 to 350 GeV based on 6.8×106 positron and electron events is presented. The very accurate data show that the positron fraction is steadily increasing from 10 to ∼250  GeV, but, from 20 to 250 GeV, the slope decreases by an order of magnitude. [...]
2013 - 10 p. - Published in : Phys. Rev. Lett. 110 (2013) 141102 External links: Interactions.org article; Symmetry Magazine article; Press Release
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2.
Tagging B quark events in ALEPH with neural networks : comparison of different methods / Proriol, J. (Clermont-Ferrand U.) ; Falvard, A. (Clermont-Ferrand U.) ; Henrard, P. (Clermont-Ferrand U.) ; Jousset, J. (Clermont-Ferrand U.) ; Brandl B. (U. Heidelberg (main))
CERN-ALEPH-PUB-92-057; PCCF-RI-91-09.- Geneva : CERN, 1993 - 26 p. Miscellaneous ALEPH PUBlications - Published in : Int. J. Neural Syst.: 3 Supp. (1992) , pp. 267-270
In : 2nd Workshop on Neural Networks: from Biology to High-energy Physics, Marciana Marina, Isola d'Elba, Italy, 18 - 26 Jun 1992, pp.267-270
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3.
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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4.
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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5.
Search for neutral Higgs bosons decaying into four taus at LEP2 / ALEPH Collaboration
A search for the production and non-standard decay of a Higgs boson, h, into four taus through intermediate pseudoscalars, a, is conducted on 683 pb-1 of data collected by the ALEPH experiment at centre-of-mass energies from 183 to 209 GeV. No excess of events above background is observed, and exclusion limits are placed on the combined production cross section times branching ratio, \xi^2 = \sigma(e+e- --> Zh)/\sigma_{SM}(e+e- --> Zh) x B(h --> aa)x B(a --> \tau^+\tau^-)^2. [...]
arXiv:1003.0705; CERN-PH-EP-2010-005.- 2010 - 18 p. ALEPH Papers - Published in : JHEP 05 (2010) 049 Fulltext: arXiv:1003.0705 - PDF; cern-ph-ep-2010-005 - PDF; Springer Open Access article: PDF; External link: Preprint
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6.
Measurement of Z-pair production in $e^+e^−$ collisions and constraints on anomalous neutral gauge couplings / Aleph Collaboration
The ZZ production cross section is measured from a data sample corresponding to a total integrated luminosity of 452 pb−1, collected by the ALEPH experiment at LEP at centre-of-mass energies from 192 to 209 GeV. Individual cross sections, extracted at six centre-of-mass energies, are found to be in agreement with Standard Model calculations. [...]
CERN-PH-EP-2009-002.- Geneva : CERN, 2009 - 14 p. ALEPH Papers - Published in : JHEP 04 (2009) 124 Fulltext: PDF; SISSA/IOP Open Access article: PDF;
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7.
Measurement of the Cross Section for open b-Quark Production in Two-Photon Interactions at LEP / ALEPH Collaboration
Inclusive \beauty-quark production in two-photon collisions has been measured at LEP using an integrated luminosity of $698\mathrm{pb}^{-1}\,$ collected by the ALEPH detector with $\sqrt{s}$ between 130 and 209 \GeV . The b quarks were identified using lifetime information. [...]
arXiv:0706.3150; CERN-PH-EP-2007-020; CERN-PH-EP-2007-020.- Geneva : CERN, 2007 - 15 p. ALEPH Papers - Published in : JHEP 09 (2007) 102 Fulltext: arXiv:0706.3150 - PDF; JHEP09(2007)102 - PDF; phep-2007-020 - PDF; SISSA/IOP Open Access article: PDF; External link: Preprint
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8.
Fermion pair production in $e^+e^-$ collisions at 189-209 GeV and constraints on physics beyond the Standard Model / ALEPH Collaboration
Cross sections, angular distributions and forward-backward asymmetries are presented, of two-fermion events produced in e+e- collisions at centre-of-mass energies from 189 to 209 GeV at LEP, measured with the ALEPH detector. Results for e+e-, mu+mu-, tau+tau-, qq, bb and cc production are in agreement with the Standard Model predictions. [...]
hep-ex/0609051; CERN-PH-EP-2006-035.- Geneva : CERN, 2007 - 61 p. ALEPH Papers - Published in : Eur. Phys. J. C 49 (2007) 411-437 Fulltext: 0609051 - PDF; 0609051_REPLACED_ON_20070713 - PDF; arXiv:hep-ex_0609051 - PDF; External link: hep-ex/0609051 PDF
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9.
Search for Higgs bosons decaying to WW in $e^{+}e^{-}$ collisions at LEP / ALEPH Collaboration
A search for Higgs bosons produced in association with a fermion pair, and decaying to WW, is performed with the data collected by the ALEPH detector at centre-of-mass energies ranging from 191 to 209 GeV. The data correspond to an integrated luminosity of 453.2 pb^-1. [...]
hep-ex/0605079; CERN-PH-EP-2006-011; CERN-PH-EP-2006-011.- Geneva : CERN, 2007 - 30 p. ALEPH Papers - Published in : Eur. Phys. J. C 49 (2007) 439-455 Fulltext: phep-2006-011 - PDF; arXiv:hep-ex_0605079 - PDF;
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10.
Deuteron and Anti-deuteron Production in $e^{+}e^{-}$ Collisions at the Z resonance / ALEPH Collaboration
Deuteron and anti-deuteron production in Z decays has been observed in the ALEPH experiment at LEP. The production rate of anti-deuterons is measured to be 5.9+-1.8+-0.5 10^-6 per hadronic Z decay in the anti-deuteron momentum range 0.62 to 1.03 GeV/c. [...]
hep-ex/0604023; CERN-PH-EP-2006-009; CERN-PH-EP-2006-009.- Geneva : CERN, 2006 - 17 p. ALEPH Papers - Published in : Phys. Lett. B 639 (2006) 192-201 Fulltext: arXiv:hep-ex_0604023 - PDF; phep-2006-009 - PDF; 0604023 - PDF; External link: Preprint
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