CERN Accelerating science

CERN Document Server 369 Datensätze gefunden  1 - 10nächsteEnde  gehen zum Datensatz: Die Suche hat 2.82 Sekunden gedauert. 
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
2.
Associated hadronic production in μ-pair events at the ISR / Antreasyan, D ; Atwood, W ; Becker, U ; Bellettini, G ; Braccini, P L ; Branson, J G ; Burger, J D ; Carbonara, F ; Carrara, R ; Castaldi, R et al.
No date. - 27 p.
3.
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
4.
Ùber die Môglichkeit von Proton-Neutron Wechselwirkungen in den Cern Speicherringen / Bartl, W (Vienna, OAW) ; Regler, M (Vienna, OAW) ; Steuer, M (Vienna, OAW) ; Hubner, K (CERN)
Es wird die Môglichkeit betrachtet, Expérimente zur Messung von Proton-Neutron Reaktionen mit den CERN- Speicherringen (ISR) durchzufuhren. Von Interesse erscheint die Reaktion p + d -*p + nd + pd, wobei entweder pd oder nd das ,,spectator"-Nukleon ist. [...]
1969 - 8 p. - Published in : Sitzungsber. Akad. Wiss. Wien. Math. (Naturwiss. Klasse): 1969 (1969) , no. 9, pp. 158-165 External link: Fulltext
5.
CONSIDERATIONS ABOUT PROTON - NEUTRON INTERACTIONS IN THE INTERSECTING STORAGE RINGS / Bartl, W (Vienna, OAW) ; Regler, M (Vienna, OAW) ; Steuer, M (Vienna, OAW) ; Hubner, K (CERN)
The pos'sibility of proton-neutron scattering experiments at the CERN Intersecting Storage Rings is studied. [...]
PRINT-69-929.
- 1969. - 9 p.
Full text
6.
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
7.
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
8.
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;
9.
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
10.
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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