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CERN Document Server 找到 2,048 笔记录  1 - 10下一个最後  跳到记录: 检索需时 1.17 秒. 
1.
(100)
Study of resonance formation in the mass region 1400 - 1500 MeV through the reaction $\gamma\gamma \to K^{0}_{S} K^{\pm} \pi^{\mp}$ / L3 Collaboration
The K^0_SK^+-\pi-+ final state in two-photon collisions is studied with the L3 detector at LEP at e+e- centre-of-mass energies from 183 to 209 GeV with an integrated luminosity of 664.6 pb-1. The \eta(1475) and f1(1420) mesons are observed and their contribution is separated by measuring the formation rates as a function of the photon virtuality Q2. [...]
CERN-PH-EP-2006-041.- Geneva : CERN, 2007 - 20 p. - Published in : JHEP 03 (2007) 018 Fulltext: PDF; SISSA/IOP Open Access article: PDF;
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2.
(91)
Measurement of $\eta '(958)$ formation in two-photon collisions at LEP1 / L3 Collaboration
The formation of the eta' in the reaction ee->ee eta'->ee pi pi gamma has been measured by the L3 detector at a centre-of-mass energy of 91 GeV. The radiative width of the eta' has been found to be 4.17 +/- 0.10(stat.) +/- 0.27(sys.) keV . [...]
CERN-PPE-97-110; CERN-L3-133.- Geneva : CERN, 1998 - 19 p. - Published in : Phys. Lett. B 418 (1998) 399-410 Fulltext: PDF; - Please contact the library if you need to access this document.
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3.
(76)
The Q$^2$ evolution of the Hadronic Photon Structure Function $F^\gamma_2$ at LEP / L3 Collaboration
New measurements at a centre-of-mass energy of 183 GeV of the hadronic photon structure function F2(x) in the Q2 interval, 9 GeV2 < Q2 < 30 GeV2, are presented. The data, collected in 1997, with the L3 detector, correspond to an integrated luminosity of 51.9 pb-1. [...]
CERN-EP-98-168; CERN-L3-164.- Geneva : CERN, 1999 - 15 p. - Published in : Phys. Lett. B 447 (1999) 147-156 Fulltext: PDF; - Please contact the library if you need to access this document.
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4.
(75)
Study of the hadronic photon structure function $F^\gamma_2$ at LEP / L3 Collaboration
The hadronic photon structure function $F^\gamma_2$ is studied in the reaction $\mathrm{e^+e^-} \rightarrow \mathrm{e^+e^-hadrons}$ at LEP with the L3 detector. The data, collected from 1991 to 1995 at a centre-of-mass energy $\sqrt{s} \simeq 91 \GeV$, correspond to an integrated luminosity of 140~pb$^{-1}$. [...]
CERN-EP-98-098; CERN-L3-149.- Geneva : CERN, 1998 - 19 p. - Published in : Phys. Lett. B 436 (1998) 403 Fulltext: PDF; - Please contact the library if you need to access this document.
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5.
(73)
Determination of the number of light neutrino species from single photon production at LEP / L3 Collaboration
A determination of the number of light neutrino families performed by measuring the cross section of single photon production in \ee\ collision near the \Zo\ resonance is reported. From an integrated luminosity of $100~\mathrm{pb^{-1}}$, collected during the years 1991--94, we have observed 2091 single photon candidates with an energy above 1~\GeV\ in the polar angular region $45^\circ < \theta_\gamma < 135^\circ$ [...]
CERN-EP-98-025; CERN-L3-141.- Geneva : CERN, 1998 - 16 p. - Published in : Phys. Lett. B 431 (1998) 199 Fulltext: PDF; - Please contact the library if you need to access this document.
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6.
(73)
Measurement of the cross-section for the process $\gamma^* \gamma^* \to$ hadrons at LEP / L3 Collaboration
Measurements of the two-photon interaction e+e- --> e+e- hadrons at sqrt(s) = 91 GeV and sqrt(s) = 183 GeV are presented. The double-tag events, collected with the L3 detector, correspond to integrated luminosities of 140 pb-1 at 91 GeV and 52 pb-1 at 183 GeV. [...]
CERN-EP-98-205; CERN-L3-168.- Geneva : CERN, 1999 - 16 p. - Published in : Phys. Lett. B 453 (1999) 333-342 Fulltext: PDF; - Please contact the library if you need to access this document.
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7.
(73)
$\chi_{c2}$ formation in two-photon collisions at LEP ; rev. version / L3 Collaboration
Two-photon formation of the charmonium resonance $\chi_{{\rm c}2}$ has been studied with the L3 detector at LEP. The $\chi_{{\rm c}2}$ is identified through its decay $\chi_{{\rm c}2} \rightarrow \gamma {\rm J}$, with a subsequent decay ${\rm J} \rightarrow {\mathrm{e^+ e^-}}$ or ${\rm J} \rightarrow {\mathrm{\mu^+ \mu^-}}$. [...]
CERN-EP-98-184; CERN-L3-165.- Geneva : CERN, 1999 - 14 p. - Published in : Phys. Lett. B 453 (1999) 73-82 Fulltext: PDF; - Please contact the library if you need to access this document.
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8.
(73)
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
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9.
(72)
Hadrons at LEP / L3 Collaboration
1999 - Published in : Phys. Lett. B 453 (1999) 333-42
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10.
(72)
Measurement of the anomalous magnetic and electric dipole moments of the $\tau$ lepton / L3 Collaboration
CERN-EP-98-045; CERN-L3-144.- Geneva : CERN, 1998 - Published in : Phys. Lett. B 434 (1998) 169-179 Fulltext: PDF; - Please contact the library if you need to access this document.
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