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CERN Document Server	Znaleziono 86 rekordów 1 - 10 skocz do rekordu:	Szukanie trwało 0.55 sekund.

W mass measurements using fully hadronic events at LEP2 / Schmidt-Kärst, S (Phys Inst III, Rheinisch-Westfalische Tech Hochschule, Aachen, Germany)
Since 1996 each LEP experiment recorded data corresponding to an integrated luminosity around 460-500 pb/sup -1/ at centre-of-mass energies between 161 GeV and 202 GeV. The experimental methods to measure the mass of the W boson in the fully hadronic channel are discussed and the preliminary combined value of the four LEP experiments is presented M/sub W/(qqqq) = 80 432 +or- 0 073 GeV. [...]
2001
In : 30th International Conference on High-energy Physics, Osaka, Japan, 27 Jul - 2 Aug 2000, pp.698-701 (vol.1)

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Experience with the L3 vertex drift chamber at LEP / Anderhub, H ; Beissel, F ; Betev, B L ; Biland, A ; Böhm, A ; Bourilkov, D ; Camps, C ; Commichau, V ; Djambazov, L ; Göttlicher, P et al.
The vertex drift chamber of the L3 Experiment at LEP, based on the time expansion principle, was in operation from the start-up of LEP in 1989 until the shutdown of LEP in 2000. The gas mixture used was 80% CO//2 and 20% i-C//4H//1//0 at a pressure of 1200 mbar. [...]
2003 - Published in : Nucl. Instrum. Methods Phys. Res., A 515 (2003) 31-36

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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

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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

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Studium der Abstrahlung härtere Photonen im Anfangszustand der Reaktion $e^{+}e^{-} \to e^{+}e^{-}(\gamma)$ bei LEP / Schmidt-Kärst, S
Aachen : Aachen TH, 1996.

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Double and single W boson production / Schmidt-Kärst, S
Geneva : CERN, 2000
In : 14th Lake Louise Winter Institute : Electroweak Physics, Lake Louise, Canada, 14 - 20 Feb 1999, pp.520-526

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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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Hadrons at LEP / L3 Collaboration
1999 - Published in : Phys. Lett. B 453 (1999) 333-42

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$\chi_{c2}$ formation in two-photon collisions at LEP / L3 Collaboration
1999 - Published in : Phys. Lett. B 453 (1999) 73-82

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Search for Scalar Leptons in $e^+ e^-$ collisions at $\sqrt{s}$= 183 GeV / L3 Collaboration
We report the result of a search for scalar leptons in $\mathrm{ e^+ e^-}$ collisions at 183 GeV centre-of-mass energy at LEP. No evidence for such particles is found in a data sample of 55.2 pb$^{-1}$. [...]
CERN-EP-99-024; CERN-L3-172.- Geneva : CERN, 1999 - 18 p. - Published in : Phys. Lett. B 456 (1999) 283-96 Fulltext: PDF; - Please contact the library if you need to access this document.

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