CERN Accelerating science

CERN Document Server Sök i 237 journaler efter:  1 - 10nästaslut  gå till journal: Sökningen tog 0.63 sekunder. 
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.
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
3.
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
4.
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;
5.
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
6.
A Study of Cosmic Ray Secondaries Induced by the Mir Space Station Using AMS-01 / AMS Collaboration
The Alpha Magnetic Spectrometer (AMS-02) is a high energy particle physics experiment that will study cosmic rays in the $\sim 100 \mathrm{MeV}$ to $1 \mathrm{TeV}$ range and will be installed on the International Space Station (ISS) for at least 3 years. A first version of AMS-02, AMS-01, flew aboard the space shuttle \emph{Discovery} from June 2 to June 12, 1998, and collected $10^8$ cosmic ray triggers. [...]
hep-ex/0406065.- 2004 - 15 p. - Published in : Nucl. Instrum. Meth. B 234 (2005) 321-332 Access to fulltext document: PDF; Preprint: PDF; External link: hep-ex/0406065 PDF
7.
Search for the Standard Model Higgs Boson at LEP / ALEPH Collaboration
The four LEP collaborations, ALEPH, DELPHI, L3 and OPAL, have collected a total of 2461 pb-1 of e+e- collision data at centre-of-mass energies between 189 and 209 GeV. The data are used to search for the Standard Model Higgs boson. [...]
hep-ex/0306033; CERN-EP-2003-011; CERN-EP-2003-011; CERN-L3-271.- Geneva : CERN, 2003 - 23 p. - Published in : Phys. Lett. B 565 (2003) 61-75 Fulltext: S0370269303006142 - XML; arXiv:hep-ex_0306033 - PDF; ep-2003-011 - PDF; External link: Preprint - Please contact the library if you need to access this document.
8.
Bose-Einstein Correlations of Neutral and Charged Pions in Hadronic Z Decays / L3 Collaboration
Bose-Einstein correlations of both neutral and like-sign charged pion pairs are measured in a sample of 2 million hadronic $\mathrm{Z}$ decays collected with the L3 detector at LEP. The analysis is performed in the four-momentum difference range $300 \mathrm{\ Me\kern -0.1em V} < Q < 2 \mathrm{\ Ge\kern -0.1em V}$ [...]
hep-ex/0109036; CERN-EP-2001-063; CERN-EP-2001-063; CERN-L3-242.- Geneva : CERN, 2002 - 15 p. - Published in : Phys. Lett. B 524 (2002) 55-64 Fulltext: S0370269301012709 - XML; arXiv:hep-ex_0109036 - PDF; ep-2001-063 - PDF; External link: Preprint - Please contact the library if you need to access this document.
9.
Measurement of the Topological Branching Fractions of the $\tau$ lepton at LEP / L3 Collaboration
Using data collected with the L3 detector at LEP from 1992 to 1995 on the Z peak, we determine the branching fractions of the $\tau$ lepton into one, three and five charged particles to be: \begin{eqnarray*} & {\cal{B}}(\tau\rightarrow (1-prong)) & = 85.274 \pm 0.105 \pm 0.073 \% , \\ & {\cal{B}}(\tau\rightarrow (3-prong)) & = 14.556 \pm 0.105 \pm 0.076 \%, \\ & {\cal{B}}(\tau\rightarrow (5-prong)) & = \phantom{0} 0.170 \pm 0.022 \pm 0.026 \%. \end{eqnarray*} \noindent The first uncertainties are statistical and the second systematic. [...]
hep-ex/0107055; CERN-EP-2001-054; CERN-EP-2001-054; CERN-L3-240.- Geneva : CERN, 2001 - 18 p. - Published in : Phys. Lett. B 519 (2001) 189-198 Fulltext: ep-2001-054 - PDF; arXiv:hep-ex_0107055 - PDF; S0370269301010991 - XML; External link: Preprint - Please contact the library if you need to access this document.
10.
Standard Model Higgs Boson with the L3 Experiment at LEP / L3 Collaboration
Final results of the search for the Standard Model Higgs boson are presented for the data collected by the L3 detector at LEP at centre-of-mass energies up to about 209 GeV. These data are compared with the expectations of Standard Model processes for Higgs boson masses up to 120 GeV. [...]
hep-ex/0107054; CERN-EP-2001-049.- Geneva : CERN, 2001 - 19 p. - Published in : Phys. Lett. B 517 (2001) 319-331 Fulltext: arXiv:hep-ex_0107054 - PDF; ep-2001-049 - PDF; S0370269301010103 - XML; External link: Preprint - Please contact the library if you need to access this document.

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