CERN Accelerating science

CERN Document Server Sök i 179 journaler efter:  1 - 10nästaslut  gå till journal: Sökningen tog 0.53 sekunder. 
1.
The Solar Flare of the 14th of July 2000 (L3+C detector results) / L3 Collaboration
Several experiments have reported observations on possible correlations between the flux of high energy muons and intense solar flares. If confirmed, these observations would have significant implications for acceleration processes in the heliosphere able to accelerate protons and other ions to energies of at least tens of GeV. [...]
CERN-PH-EP-2006-043.- Geneva : CERN, 2006 - 15 p. - Published in : Astron. Astrophys. 456 (2006) 351-357 Fulltext: PDF;
2.
A search for flaring Very-High-Energy cosmic-ray sources with the L3+C muon spectrometer / L3 Collaboration
The L3+C muon detector at the Cern electron-position collider, LEP, is used for the detection of very-high-energy cosmic \gamma-ray sources through the observation of muons of energies above 20, 30, 50 and 100 GeV. Daily or monthly excesses in the rate of single-muon events pointing to some particular direction in the sky are searched for. [...]
CERN-PH-EP-2006-036.- Geneva : CERN, 2006 - 22 p. - Published in : Astropart. Phys. 25 (2006) 298-310 Fulltext: PDF;
3.
Charge determination of nuclei with the AMS-02 silicon tracker / Alpat, B ; Ambrosi, G ; Azzarello, P ; Battiston, R ; Bene, P ; Bertucci, B ; Bizzaglia, S ; Bizzarri, M ; Blasko, S ; Bourquin, M et al.
The silicon tracker of the AMS-02 detector measures the trajectory in three dimensions of electrons, protons and nuclei to high precision in a dipole magnetic field and thus measures their rigidity (momentum over charge) and the sign of their charge. In addition, it measures the specific energy loss of charged particles to determine the charge magnitude. [...]
2005 - Published in : Nucl. Instrum. Methods Phys. Res., A 540 (2005) 121-130 Published version: PDF;
In : 29th International Cosmic Ray Conference, Pune, India, 3 - 10 Aug 2005, pp.299 (v.9)
4.
Measurement of Branching Fractions of $\tau$ Hadronic Decays / L3 Collaboration
Using data collected with the L3 detector at LEP at the Z peak, the branching fractions of the $\tau$ lepton into the hadronic final states, $h^- n\pi^0 \nu(n=0,1,2, >= 3)$ and $h^-h^+h^- n\pi^0 \nu$ where $h^\pm$ denotes a charged hadron, are measured to be .....
CERN-EP-2003-019 ; CERN-L3-270.
- 2003. - 17 p.
Fulltext - Fulltext
5.
The transition radiation detector of the AMS-2 experiment / Schwering, G (RWTH, Aachen, Germany) ; Fopp, St (RWTH, Aachen, Germany) ; Karpinski, W (RWTH, Aachen, Germany) ; Kirn, T (Aachen, Germany) ; Lübelsmeyer, K (RWTH, Aachen, Germany) ; Orboeck, J (RWTH, Aachen, Germany) ; Schael, S (RWTH, Aachen, Germany) ; Schultz, A (RWTH, Aachen, Germany) ; Dratzig, V (RWTH, Aachen, Germany) ; Siedenburg, T (RWTH, Aachen, Germany) et al.
2002
In : 7th International Conference on Advanced Technology and Particle Physics, Como, Italy, 15 - 19 Oct 2001, pp.57-61
6.
Inclusive $D^{*\pm}$ production in two-photon collisions at LEP / L3 Collaboration
Inclusive D*/sup +or-/ production in two-photon collisions is studied with the L3 detector at LEP, using 683 pb/sup -1/ of data collected at centre-of-mass energies from 183 to 209 GeV. Differential cross sections are determined as functions of the transverse momentum and pseudorapidity of the D*/sup +or-/ mesons in the kinematic region 1 GeV<P/sub T/<12 GeV and $\beta$ <1.4. [...]
2002 - Published in : Phys. Lett. B 535 (2002) 59-69
7.
Helium in near Earth orbit / AMS Collaboration
The helium spectrum from 0.1 to 100 GeV/nucleon was measured by the Alpha Magnetic Spectrometer (AMS) during space shuttle flight STS-91 at altitudes near 380 km. Above the geomagnetic cutoff the spectrum is parameterized by a power law. [...]
Geneva : CERN, 2000 - Published in : Phys. Lett. B 494 (2000) 193-202
8.
Measurements of the $b\overline{b}$ production cross section and forward-backward asymmetry at centre-of-mass energies above the Z pole at LEP / L3 Collaboration
The measurements of R/sub b/= sigma (e/sup +/e/sup -/ to bb)/ sigma (e/sup +/e/sup -/ to qq) and of the b quark forward-backward charge asymmetry, A/sub fb//sup b/, at centre-of-mass energies above the Z pole are described. The measurement of R/sub b/ is performed at square root (s) between 130 and 189 GeV using a b-tagging method that exploits the relatively large decay length of b-hadrons. [...]
Geneva : CERN, 2000 - Published in : Phys. Lett. B 485 (2000) 71-84
9.
The "Negative Mass" Effect in the Proton Synchrotron TRAPP / Tumaikin, G M ; Balakin, V E ; Khlystov, D A ; Kozhemyakin, A V ; Koutsenko, V F ; Rastigeyev, S A ; Turkin, V F ; Vostrikov, V A
BUDKER-INP-2000-21.
- 2000.
Fulltext
10.
Photon structure functions and azimuthal correlations of lepton pairs in tagged $\gamma\gamma$ collisions / L3 Collaboration
Measurements of the QED structure of the photon based on the reaction ee to ee gamma /sup (*)/(P/sup 2/) gamma *(Q/sup 2/) to ee mu mu are discussed. This review is an update of the discussion of the results on the QED structure of the photon and covers the published measurements of the photon structure functions F/sub 2//sup gamma /, F/sub A//sup gamma / and F/sub B//sup gamma / and of the differential cross-section d sigma /dx for the exchange of two virtual photons. [...]
CERN-EP-98-060; CERN-L3-147.- Geneva : CERN, 1998 - Published in : Phys. Lett. B 438 (1998) 363 Fulltext: PDF; - Please contact the library if you need to access this document.

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