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CERN Document Server 169 のレコードが見つかりました。  1 - 10次最後  レコードへジャンプ： 検索にかかった時間： 1.57 秒 
1.
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
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2.
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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3.
Measurements of Cross Sections and Forward-Backward Asymmetries at the Z Resonance and Determination of Electroweak Parameters / L3 collaboration
We report on measurements of hadronic and leptonic cross sections and leptonic forward-backward asymmetries performed with the L3 detector in the years $1993-95$.A total luminosity of 103 pb$^{-1}$ was collected at centre-of-mass energies $\sqrt{s} \approx m_\mathrm{Z}$ and $\sqrt{s} \approx m_\mathrm{Z} \pm 1.8$ GeVwhich corresponds to 2.5 million hadronic and 245 thousand leptonic events selected.These data lead to a significantly improved determination of Z parameters.From the total cross sections, combined with our measurements in $1990-92$,we obtain the final results:%%%\begin{eqnarr ay*} m_\mathrm{Z} = 91189.8 \pm 3.1\ \mathrm{MeV} \, , & & \Gamma_\mathrm{Z} = 2502.4 \pm 4.2\ \mathrm{MeV} \, , \\ \Gamma_\mathrm{had} = 1741.1 \pm 3.8\ \mathrm{MeV} \, , & & \Gamma_\ell = 84.14 \pm 0.17\ \mathrm{MeV} \,. \label{eq:Zpara_abstract}\end{eqnarray*}%%%An invisible width of $\Gamma_\mathrm{inv} = 499.1 \pm 2.9$ MeV is derived which in the Standard Model yields for the numberof light neutrino species $N_\nu = 2.978 \pm 0.014$.Adding our results on the leptonic forward-backward asymmetries and thetau polarisation, the effective vector and axial-vector coupling constants of the neutral weak current to charged leptons are determined to be $\bar{g}_{\mathrm{V}}^\ell = -0.0397\pm 0.0017$ and $\bar{g}_{\mathrm{A}}^\ell = -0.50153 \pm 0.00053$.Including our measurements of the Z $\rightarrow \mathrm{b}\bar{\mathrm{b}}$ forward-backward and quark charge asymmetries a value for the effective electroweakmixing angle of $\sin^2\!\overline{\theta}_{\mathrm{W}} = 0.23093 \pm 0.00066$ is derived. [...]
hep-ex/0002046; CERN-EP-2000-022; CERN-EP-2000-022; CERN-L3-202.- Geneva : CERN, 2000 - 97 p. - Published in : Eur. Phys. J. C 16 (2000) 1-40 Fulltext: ep-2000-022 - PDF; arXiv:hep-ex_0002046 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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4.
Search for Charginos with a Small Mass Difference to the Lightest Supersymmetric Particle at $\sqrt{s} = 189 GeV$ / L3 collaboration
A search for charginos nearly mass-degenerate with the lightestsupersymmetric particle isperformed using the 176 {pb$^{-1}$ of data collected at 189 {Ge\kern -0.1em V} in 1998 with the L3detector. Mass differences between the chargino and the lightest supersymmetric particlebelow 4 {Ge\kern -0.1em V} are considered.The presence of a high transverse momentum photon is required to single out the signal from the photon-photon interaction background. [...]
hep-ex/0002043; CERN-EP-2000-018; CERN-EP-2000-018; CERN-L3-201.- Geneva : CERN, 2000 - 19 p. - Published in : Phys. Lett. B 482 (2000) 31-42 Fulltext: ep-2000-018 - PDF; arXiv:hep-ex_0002043 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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5.
Hadrons at LEP / L3 Collaboration
1999 - Published in : Phys. Lett. B 453 (1999) 333-42
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6.
$\chi_{c2}$ formation in two-photon collisions at LEP / L3 Collaboration
1999 - Published in : Phys. Lett. B 453 (1999) 73-82
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7.
Search for Heavy Neutral and Charged Leptons in $e^+ e^-$ Annihilation at $\sqrt{s}$= 183 GeV and 189 GeV / L3 Collaboration
A search for unstable neutral and charged heavy leptons as well as for stable charged heavy leptons is performed at center-of-mass energies $\sqrt{s}$ = 183 and 189 GeV with the L3 detector at LEP. No evidence for their existence is found. [...]
hep-ex/9909007; CERN-EP-99-075; CERN-EP-99-75; CERN-EP-99-075; CERN-L3-177.- Geneva : CERN, 1999 - 15 p. - Published in : Phys. Lett. B 462 (1999) 354-64 Fulltext: ep-99-075 - PDF; arXiv:hep-ex_9909007 - PDF; - Please contact the library if you need to access this document.
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8.
Formation of the $\eta_c$ in Two-Photon Collisions at LEP / L3 Collaboration
The two-photon width $\Gamma_{\gamma\gamma}$ of the $\eta_{\mathrm{c}}$ meson has been measured with the L3 detector at LEP. The $\eta_{\mathrm{c}}$ is studied in the decay modes $\pi^+\pi^-\pi^+\pi^-$, $\pi^+\pi^-$K$^+$K$^-$, K$_s^0$K$^\pm\pi^\mp$, K$^+$K$^-\pi^{0}$, $\pi^+\pi^-\eta$, $\pi^+\pi^-\eta'$, and $\rho^+\rho^-$ using an integrated luminosity of 140 pb$^{-1}$ at $\sqrt{s} \simeq 91$ GeV and of 52 pb$^{-1}$ at $\sqrt{s} \simeq 183$ GeV. [...]
hep-ex/9909008; CERN-EP-99-072; CERN-EP-99-72; CERN-EP-99-072; CERN-L3-176.- Geneva : CERN, 1999 - 18 p. - Published in : Phys. Lett. B 461 (1999) 155-66 Fulltext: arXiv:hep-ex_9909008 - PDF; ep-99-072 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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9.
A Direct determination of the number of light neutrino families from $e^+ e^- \to$ neutrino antineutrino $\gamma$ at LEP / L3 Collaboration
CERN-L3-035.- Geneva : CERN, 1992 - Published in : Phys. Lett. B 275 (1992) 209-221
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10.
Measurement of an elongation of the pion source in Z decays / L3 Collaboration
We measure Bose-Einstein correlations between like-sign charged pion pairs in hadronic Z~decays with the L3 detector at LEP. The analysis is performed in three dimensions in the longitudinal center-of-mass system. [...]
hep-ex/9909009; CERN-EP-99-050; CERN-EP-99-50; CERN-EP-99-050; CERN-L3-174.- Geneva : CERN, 1999 - 17 p. - Published in : Phys. Lett. B 458 (1999) 517-28 Fulltext: arXiv:hep-ex_9909009 - PDF; ep-99-050 - PDF; - Please contact the library if you need to access this document.
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CERN Document Server : 169 のレコードが見つかりました。   1 - 10次最後  レコードへジャンプ：
似た著者名：
29 You, J
12 You, J H
51 You, J Q
1 You, J Y
7 You, J.M.
1 You, Jeehye
1 You, Jhih-An
4 You, Jia-Huai
1 You, Jiabin
1 You, Jian-Qi
2 You, Jiangong
1 You, Jiangyabg
10 You, Jiangyang
1 You, Jianming
1 You, Jinhong
1 You, Junhan
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