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CERN Document Server 2,050 records found  1 - 10próximoend  jump to record: Search took 0.84 seconds. 
1.
(100)
Relative Composition and Energy Spectra of Light Nuclei in Cosmic Rays. Results from AMS-01 / AMS-01 Collaboration
Measurement of the chemical and isotopic composition of cosmic rays is essential for the precise understanding of their propagation in the galaxy. While the model parameters are mainly determined using the B/C ratio, the study of extended sets of ratios can provide stronger constraints on the propagation models. [...]
arXiv:1008.5051.- 2010 - 13 p. - Published in : Astrophys. J. 724 (2010) 329-340 Fulltext: PDF; External link: Preprint
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2.
(91)
Cosmic-ray positron fraction measurement from 1 to 30 GeV with AMS-01 / AMS-01 Collaboration
A measurement of the cosmic ray positron fraction e+/(e+ + e-) in the energy range of 1-30 GeV is presented. The measurement is based on data taken by the AMS-01 experiment during its 10 day Space Shuttle flight in June 1998. [...]
astro-ph/0703154.- 2007 - 20 p. - Published in : Phys. Lett. B 646 (2007) 145-154 Access to fulltext document: PDF; Fulltext: S0370269307001104 - XML; arXiv:astro-ph_0703154 - PDF;
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3.
(78)
Isotopic Composition of Light Nuclei in Cosmic Rays: Results from AMS-01 / AMS-01 Collaboration
The variety of isotopes in cosmic rays allows us to study different aspects of the processes that cosmic rays undergo between the time they are produced and the time of their arrival in the heliosphere. In this paper, we present measurements of the isotopic ratios $^2$H/$^4$He, $^3$He/$^4$He, $^6$Li/$7$Li, $7$Be/($^9$Be+$^{10}$Be), and $^{10}$B/$^{11}$B in the range 0.2-1.4 GeV of kinetic energy per nucleon. [...]
arXiv:1106.2269.- 2011 - 12 p. - Published in : Astrophys. J. 736 (2011) 105 Fulltext: PDF; External link: Preprint
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4.
(60)
Test of the $\tau$-Model of Bose-Einstein Correlations and Reconstruction of the Source Function in Hadronic Z-boson Decay at LEP / L3 Collaboration
Bose-Einstein correlations of pairs of identical charged pions produced in ha- dronic Z decays are analyzed in terms of various parametrizations. A good descrip- tion is achieved using a L ́evy stable distribution in conjunction with a model where a particle’s momentum is correlated with its space-time point of production, the tau-model. [...]
arXiv:1105.4788; CERN-PH-EP-2011-080; CERN-PH-EP-2011-080.- Geneva : CERN, 2011 - 40 p. - Published in : Eur. Phys. J. C 71 (2011) 1648 CERN-PH-EP-2011-080 (2011-05-20): PDF; Fulltext: PDF; External link: Preprint
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5.
(60)
Study of hadronic event shape in flavour tagged events in $e^{+} e^{-}$ annihilation at $<\sqrt{S}>$ = 197 GeV / L3 Collaboration
Results are presented from a study of the structure of hadronic events in highenergy (e^+)(e^-) interactions detected by the L3 detector at LEP. Various event shape distributions and their moments are measured at several energy points at and above the Z-boson mass. [...]
arXiv:0907.2658; CERN-PH-EP-2008-011.- Geneva : CERN, 2008 - 29 p. - Published in : PMC Phys. A 2 (2008) 6 Fulltext: CERN-PH-EP-2008-011 - PDF; arXiv:0907.2658 - PDF; External link: Preprint
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6.
(55)
Generalized event shape and energy flow studies in $e^+ e^-$ annihilation at $\sqrt{s}$ = 91.2-208.0 GeV / L3 Collaboration
We present results from a study of hadronic event structure in high energy e(+)e(-') interactions using the L3 detector at LEP. A new class of event shape distributions are measured at and above the Z boson pole for light quark (u, d, s, c) flavours. [...]
2011 - 59 p. - Published in : JHEP 10 (2011) 143 Springer Open Access article: PDF;
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7.
(53)
Search for neutral MSSM Higgs bosons at LEP / ALEPH Collaboration
The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have searched for the neutral Higgs bosons which are predicted by the Minimal Supersymmetric Standard Model (MSSM). The data of the four collaborations are statistically combined and examined for their consistency with the background hypothesis and with a possible Higgs boson signal. [...]
hep-ex/0602042; CERN-PH-EP-2006-001; CERN-L3-307; CERN-PH-EP-2006-001.- Geneva : CERN, 2006 - 82 p. ALEPH Papers - Published in : Eur. Phys. J. C 47 (2006) 547 Fulltext: arXiv:hep-ex_0602042 - PDF; phep-2006-001 - PDF; 0602042 - PDF; External link: Preprint
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8.
(51)
Search for neutral Higgs boson in Z0 decay / L3 Collaboration
CERN-L3-010.- Geneva : CERN, 1990 - 13 p. - Published in : Phys. Lett. B 248 (1990) 203-210 Fulltext: PDF; - Please contact the library if you need to access this document.
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9.
(51)
Mass limits for excited electrons and muons from Z0 decay / L3 Collaboration
CERN-L3-007.- Geneva : CERN, 1990 - 15 p. - Published in : Phys. Lett. B 247 (1990) 177-184 Fulltext: PDF; - Please contact the library if you need to access this document.
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10.
(51)
Precision Measurement of the Boron to Carbon Flux Ratio in Cosmic Rays from 1.9 GV to 2.6 TV with the Alpha Magnetic Spectrometer on the International Space Station / Aguilar, M (Madrid, CIEMAT) ; Ali Cavasonza, L (JARA, Aachen) ; Alpat, B (INFN, Perugia) ; Ambrosi, G (INFN, Perugia) ; Arruda, L (LIP, Lisbon) ; Attig, N (Julich, NIC ; Unlisted, DE) ; Aupetit, S (LPSC, Grenoble) ; Azzarello, P (Geneva U.) ; Bachlechner, A (JARA, Aachen) ; Barao, F (LIP, Lisbon) et al. /AMS
Knowledge of the rigidity dependence of the boron to carbon flux ratio (B/C) is important in understanding the propagation of cosmic rays. The precise measurement of the B/C ratio from 1.9 GV to 2.6 TV, based on 2.3 million boron and 8.3 million carbon nuclei collected by AMS during the first 5 years of operation, is presented. [...]
2016 - 8 p. - Published in : Phys. Rev. Lett. 117 (2016) 231102 Fulltext: PDF;
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