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CERN Document Server 2,050 εγγραφές βρέθηκαν  1 - 10επόμενοτέλος  μετάβαση στην εγγραφή: Η έρευνα πήρε 1.62 δευτερόλεπτα. 
1.
(100)
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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2.
(91)
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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3.
(87)
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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4.
(79)
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.
(76)
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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6.
(73)
Search for Excited Leptons in $e^+ e^-$ Annihilation at $\sqrt{s}$ = 161 GeV / L3 Collaboration
A search for excited leptons $\rm e^*,~\mu^*, ~\tau^*$ and $\nu_{\rm e}^*$ in $\rm e^+e^-$ collisions at $\rm \sqrt{s}$ = 161 GeV is performed using the $\rm 10.8 ~pb^{-1}$ of data collected by the L3 detector at LEP. No evidence has been found for their existence. [...]
CERN-PPE-97-012; CERN-L3-110.- Geneva : CERN, 1997 - 15 p. - Published in : Phys. Lett. B 401 (1997) 139-149 Fulltext: PDF; - Please contact the library if you need to access this document.
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7.
(71)
QCD Studies and Determination of $\alpha_s$ in $e^+ e^-$ collisions at $\sqrt{s}$ = 161 GeV and 172 GeV / L3 Collaboration
We present a study of the structure of hadronic events recorded by the L3 detector at LEP at the center of mass energies of 161 and 172 GeV. The data sample corresponds to an integrated luminosity of 21.25 pb-1 collected during the high energy runs of 1996. [...]
CERN-PPE-97-042; CERN-L3-115.- Geneva : CERN, 1997 - 22 p. - Published in : Phys. Lett. B 404 (1997) 390-402 Fulltext: PDF; - Please contact the library if you need to access this document.
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8.
(69)
Hard-photon production at $\sqrt{s}$ = 161 and 172 GeV at LEP / L3 Collaboration
We have studied the process $e^+e^-{\rightarrow}\rm n {\gamma}$ $(\rm n{\ge}2)$ at centre-of-mass energies of 161.3 GeV and 172.1 GeV. The analysis is based on a sample of events collected by the L3 detector in 1996 corresponding to total integrated luminosities of 10.7 ${\rm pb^{-1}}$ and 10.1 ${\rm pb^{-1}}$ respectively. [...]
CERN-PPE-97-077; CERN-L3-125.- Geneva : CERN, 1997 - 12 p. - Published in : Phys. Lett. B 413 (1997) 159-166 Fulltext: PDF; - Please contact the library if you need to access this document.
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9.
(68)
Search for new physics in energetic single photon production in $e^+ e^-$ annihilation at the Z resonance / L3 Collaboration
Using a sample of $\mathrm{e^{+}e^{-}}$ annihilation events collected with the L3 detector at the Z resonance corresponding to an integrated luminosity of 137 pb$^{-1}$, we have searched for anomalous production of $\gamma \mathrm{X}$ final states where $\mathrm{X}$ represents stable, weakly interacting particles and the photon energy is greater than 15 GeV. The sample of events found is consistent with Standard Model expectations. [...]
CERN-PPE-97-082; CERN-L3-128.- Geneva : CERN, 1997 - 13 p. - Published in : Phys. Lett. B 412 (1997) 201-209 Fulltext: PDF; - Please contact the library if you need to access this document.
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10.
(68)
Single and multi-photon events with missing energy in $e^+ e^-$ collisions at $\sqrt{s}$ = 183 GeV / L3 Collaboration
An analysis of single and multi-photon events with missing energy is performed using data collected with the L3 detector at LEP at centre-of-mass energies around 183\gev, for a total of 55.3 pb$^{-1}$ of integrated luminosity. The results obtained are in good agreement with the Standard Model prediction and are used to derive the value for the $\epem\ra\nnbar\gamma(\gamma)$ cross section as well as upper limits on cross sections of new physics processes. [...]
CERN-EP-98-150; CERN-L3-160.- Geneva : CERN, 1998 - 20 p. - Published in : Phys. Lett. B 444 (1998) 503-515 Fulltext: PDF; - Please contact the library if you need to access this document.
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