CERN Accelerating science

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nhamdan@altavista.com
15 items
last update: 01 Jan 1970, 00:00
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1.
Study of Multiphoton Final States and Tests of QED in $e^+ e^-$ collisions at $\sqrt{s}$ up to 209 GeV / L3 Collaboration
The process e+ e- -> n gamma with n>=2 is studied at centre-of-mass energies ranging from \root(s)=192 to 208 GeV. The data sample corresponds to a total integrated luminosity of 427 1/pb. [...]
hep-ex/0202025; CERN-EP-2001-096; CERN-EP-2001-096; CERN-L3-249.- Geneva : CERN, 2002 - 15 p. - Published in : Phys. Lett. B 531 (2002) 28-38 Fulltext: arXiv:hep-ex_0202025 - PDF; 0202025 - PDF; ep-2001-096 - PDF; S0370269302013394 - XML; External link: Preprint - Please contact the library if you need to access this document.
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2.
Determination of $\alpha_s$ from Hadronic Event Shapes in $e^+ e^-$ Annihilation at $192 \le \sqrt{s} \le 208$ GeV / L3 Collaboration
Results are presented from a study of the structure of high energy hadronic events recorded by the L3 detector at sqrt(s)>192 GeV. The distributions of several event shape variables are compared to resummed O(alphaS^2) QCD calculations. [...]
hep-ex/0206052; CERN-EP-2002-015; CERN-EP-2002-015; CERN-L3-254.- Geneva : CERN, 2002 - 18 p. - Published in : Phys. Lett. B 536 (2002) 217-228 Fulltext: ep-2002-015_bw_evol_bw - EPS; ep-2002-015_bw_gn_194_bw - EPS; ep-2002-015_figure_20txt1 - PDF; ep-2002-015 - PDF; ep-2002-015_alsfit - EPS; ep-2002-015_1thrust_evol_bw - EPS; ep-2002-015_als_l3_oct01_1_bw - EPS; ep-2002-015_bw_gn_206_bw - EPS; ep-2002-015_bw_gn_201_bw - EPS; ep-2002-015_als_l3_oct01_3_bw - EPS; arXiv:hep-ex_0206052 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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3.
$\Lambda$ and $\Sigma^{0}$ Pair Production in Two-Photon Collisions at LEP / L3 Collaboration
Strange baryon pair production in two-photon collisions is studied with the L3 detector at LEP. The analysis is based on data collected at e+e- centre-of-mass energies from 91 GeV to 208 GeV, corresponding to an integrated luminosity of 844 pb-1. [...]
hep-ex/0204025; CERN-EP-2002-013; CERN-EP-2002-013; CERN-L3-253.- Geneva : CERN, 2002 - 15 p. - Published in : Phys. Lett. B 536 (2002) 24-33 Fulltext: ep-2002-013 - PDF; ep-2002-013_comp_a - PS.GZ; ep-2002-013_comp_b - PS.GZ; ep-2002-013_comp_c - PS.GZ; ep-2002-013_et - PS.GZ; ep-2002-013_mass_a - PS.GZ; ep-2002-013_mass_c - PS.GZ; ep-2002-013_lam3c - EPS; arXiv:hep-ex_0204025 - PDF; ep-2002-013_figures - DOC; ep-2002-013_mass_b - PS.GZ; External link: Preprint - Please contact the library if you need to access this document.
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4.
Inclusive $D*^{+-}$ Production in Two-Photon Collisions at LEP / L3 Collaboration
Inclusive D^{*+-} production in two-photon collisions is studied with the L3 detector at LEP, using 683 pb^{-1} of data collected at centre-of-mass energies from 183 to 208 GeV. Differential cross sections are determined as functions of the transverse momentum and pseudorapidity of the D^{*+-} mesons in the kinematic region 1 GeV < P_T < 12 GeV and |eta| < 1.4. [...]
hep-ex/0204027; CERN-EP-2002-012; CERN-EP-2002-012; CERN-L3-252.- Geneva : CERN, 2002 - 11 p. - Published in : Phys. Lett. B 535 (2002) 59-69 Fulltext: ep-2002-012 - PDF; ep-2002-012_figure2 - EPS; ep-2002-012_figure3 - EPS; ep-2002-012_figure4 - EPS; ep-2002-012_figure5 - EPS; ep-2002-012_figure1 - EPS; arXiv:hep-ex_0204027 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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5.
Search for a Higgs Boson Decaying into Two Photons at LEP / L3 Collaboration
A Higgs particle produced in association with a Z boson and decaying into two photons is searched for in the data collected by the L3 experiment at LEP. All possible decay modes of the Z boson are investigated. [...]
hep-ex/0203016; CERN-EP-2002-010; CERN-EP-2002-010; CERN-L3-251.- Geneva : CERN, 2002 - 18 p. - Published in : Phys. Lett. B 534 (2002) 28-38 Fulltext: ep-2002-010_figure5a - EPS; ep-2002-010_figure5b - EPS; ep-2002-010 - PDF; ep-2002-010_figure2 - EPS; ep-2002-010_figure7b - EPS; ep-2002-010_figure1 - EPS; arXiv:hep-ex_0203016 - PDF; ep-2002-010_figure8 - EPS; ep-2002-010_figure4 - EPS; ep-2002-010_figure7a - EPS; ep-2002-010_figure6a - EPS; ep-2002-010_figure6b - EPS; ep-2002-010_figure3b - EPS; ep-2002-010_figure3a - EPS; S0370269302015721 - XML; External link: Preprint - Please contact the library if you need to access this document.
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6.
The $e^+ e^- \to Z\gamma\gamma \to q\overline{q}\gamma\gamma$ Reaction at LEP and Constraints on Anomalous Quartic Gauge Boson Couplings / L3 Collaboration
The cross section of the process e^+ e^- -> Z \gamma\gamma -> qq~ \gamma \gamma is measured with 215 pb^-1 of data collected with the L3 detector during the final LEP run at centre-of-mass energies around 205 GeV and 207 GeV. No deviation from the Standard Model expectation is observed. [...]
hep-ex/0206050; CERN-EP-2002-034; CERN-EP-2002-034; CERN-L3-255.- Geneva : CERN, 2002 - 14 p. - Published in : Phys. Lett. B 540 (2002) 43-51 Fulltext: ep-2002-034_title - PS.GZ; ep-2002-034 - PDF; arXiv:hep-ex_0206050 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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7.
Measurement of Genuine Three-Particle Bose-Einstein Correlations in Hadronic Z decay / L3 Collaboration
We measure three-particle Bose-Einstein correlations in hadronic Z decay with the L3 detector at LEP. Genuine three-particle Bose-Einstein correlations are observed. [...]
hep-ex/0206051; CERN-EP-2002-035; CERN-EP-2002-035; CERN-L3-256.- Geneva : CERN, 2002 - 16 p. - Published in : Phys. Lett. B 540 (2002) 185-198 Fulltext: ep-2002-035 - PDF; arXiv:hep-ex_0206051 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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8.
Search for Single Top Production at LEP / L3 Collaboration
Single top production in e^+e^- annihilations is searched for in data collected by the L3 detector at centre-of-mass energies from 189 to 209 GeV, corresponding to a total integrated luminosity of 634 pb-1. Investigating hadronic and semileptonic top decays, no evidence of single top production at LEP is obtained and upper limits on the single top cross section as a function of the centre-of-mass energy are derived. [...]
hep-ex/0210041; CERN-EP-2002-065; CERN-EP-2002-065; CERN-L3-260.- Geneva : CERN, 2002 - 14 p. - Published in : Phys. Lett. B 549 (2002) 290-300 Fulltext: arXiv:hep-ex_0210041 - PDF; ep-2002-065 - PDF; S0370269302029337 - XML; External link: Preprint - Please contact the library if you need to access this document.
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9.
Search for Neutral Higgs Bosons of the Minimal Supersymmetric Standard Model in $e^{+}e^{-}$ Interactions at $\sqrt{s}$ up to 209 GeV / L3 Collaboration
A search for the lightest neutral CP-even and neutral CP-odd Higgs bosons of the Minimal Supersymmetric Standard Model is performed using 216.6 pb-1 of data collected with the L3 detector at LEP at centre-of-mass energies between 203 and 209 GeV. No indication of a signal is found. [...]
hep-ex/0208042; CERN-EP-2002-066; CERN-EP-2002-066; CERN-L3-259.- Geneva : CERN, 2002 - 18 p. - Published in : Phys. Lett. B 545 (2002) 30-42 Fulltext: ep-2002-066 - PDF; arXiv:hep-ex_0208042 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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10.
Production of Single W Bosons at LEP and Measurement of $WW\gamma$ Gauge Coupling Parameters / L3 Collaboration
\documentclass[12pt,a4paper,dvips]{article} \begin{document} \begin{center} {Production of Single W Bosons at LEP and \\ Measurement of \boldmath$\rm W W \gamma$ Gauge Coupling Parameters} \end{center} \begin{abstract} Single W boson production in electron-positron collisions is studied with the L3 detector at centre-of-mass energies between $192\mathrm{\ Ge\kern -0.1em V}$ and $209\mathrm{\ Ge\kern -0.1em V}$. Events with two acoplanar hadronic jets or a single energetic lepton are selected, and the single W cross section is measured [...]
hep-ex/0209015; CERN-EP-2002-064; CERN-EP-2002-064; CERN-L3-258.- Geneva : CERN, 2002 - 20 p. - Published in : Phys. Lett. B 547 (2002) 151-163 Fulltext: arXiv:hep-ex_0209015 - PDF; S0370269302027685 - XML; ep-2002-064 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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11.
Measurement of Bose-Einstein Correlations in $e^{+}e^{-}\to W^{+}W^{-}$ Events at LEP / L3 Collaboration
Bose-Einstein correlations in W-pair production at LEP are investigated in a data sample of 629 pb$^{-1}$ collected by the L3 detector at $\sqrt{s}=$ 189--209\,GeV. Bose-Einstein correlations between pions within a W decay are observed and found to be in good agreement with those in light-quark Z decay. [...]
hep-ex/0209016; CERN-EP-2002-062; CERN-EP-2002-062; CERN-L3-257.- Geneva : CERN, 2002 - 16 p. - Published in : Phys. Lett. B 547 (2002) 139-150 Fulltext: arXiv:hep-ex_0209016 - PDF; ep-2002-062 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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12.
Inclusive Charged Hadron Production in Two-Photon Collisions at LEP / L3 Collaboration
Inclusive charged hadron production, $ m{e}^{+} m{e}^{-} ightarrow m{e}^{+} m{e}^{-}$ h$^{pm}$ X, is studied using 414 pb$^{-1}$ of data collected at LEP with the L3 detector at centre-of-mass energies between 189 and 202 GeV. Single particle inclusive differential cross sections are measured as a function of the particle transverse momentum, $p_t$, and pseudo-rapidity, $eta$. [...]
hep-ex/0301025; CERN-EP-2002-081; CERN-EP-2002-081; CERN-L3-262.- Geneva : CERN, 2003 - 15 p. - Published in : Phys. Lett. B 554 (2003) 105-14 Fulltext: ep-2002-081 - PDF; S0370269303000157 - XML; arXiv:hep-ex_0301025 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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13.
Measurement of W Polarisation at LEP / L3 Collaboration
The three different helicity states of W bosons produced in the reaction e+ e- -> W+ W- -> l nu q q~ at LEP are studied using leptonic and hadronic W decays. Data at centre-of-mass energies \sqrt s = 183-209 GeV are used to measure the polarisation of W bosons, and its dependence on the W boson production angle. [...]
hep-ex/0301027; CERN-EP-2002-092; CERN-EP-2002-092; CERN-L3-264.- Geneva : CERN, 2003 - 10 p. - Published in : Phys. Lett. B 557 (2003) 147-156 Fulltext: 0301027 - PDF; S0370269303001722 - XML; arXiv:hep-ex_0301027 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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14.
A Combination of Preliminary Electroweak Measurements and Constraints on the Standard Model, 2002 . - final version / ALEPH Collaboration
his note presents a combination of published and preliminary electroweak results from the four LEP collaborations and the SLD collaboration which were prepared for the 2002 summer conferences. [...]
hep-ex/0212036 ; CERN-ALEPH-2002-042 ; CERN-DELPHI-2002-098-PHYS-927 ; CERN-EP-2002-091 ; CERN-L3-265 ; CERN-L3-Note-2788 ; CERN-LEPEWWG-2002-02 ; CERN-OPAL-PR-370 ; CERN-PHYS-927 ; CERN-PHYSIC-2002-018 ; DELPHI-2002-098-PHYS-927.
- 2002. - 216 p.
Fulltext - Fulltext
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15.
Study of the $e^{+}e^{-}\to Ze^{+}e^{-}$ Process at LEP / L3 Collaboration
The cross section of the process $\rm e^+e^-\rightarrow Ze^+e^-$ is measured with ~0.7\,fb$^{-1}$ of data collected with the L3 detector at LEP. Decays of the Z boson into quarks and muons are considered at centre-of-mass energies ranging from $183$ GeV up to $209$ GeV. [...]
hep-ex/0303041; CERN-EP-2002-103; CERN-EP-2002-103; CERN-L3-263.- Geneva : CERN, 2003 - 12 p. - Published in : Phys. Lett. B 561 (2003) 73-81 Fulltext: ep-2002-103 - PDF; S0370269303004064 - XML; arXiv:hep-ex_0303041 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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