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CERN Document Server Encontrados 55 registros  1 - 10siguientefinal  ir al registro: La búsqueda tardó 0.60 segundos. 
1.
Measurement of the B oscillations Frequency / Pinto, J C
L3-Note-2050. - Pittsburgh, PA : Carnegie-Mellon Univ., 1997.
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2.
$\Upsilon$ production in Z Decays / L3 Collaboration
We have searched for evidence of Upsilon production in 3.5 million hadronic Z decays collected by the L3 detector at LEP in 1991-1995. No signals are observed for the decay chain Z -> Upsilon X; Upsilon -> l+l- (l= e, mu), therefore upper limits at the 95% confidence level are set on the following Z branching fractions: BR (Z -> Upsilon(1S) X) < 5.5 x 10**-5; BR (Z -> Upsilon(2S) X) < 13.9 x 10**-5; BR (Z -> Upsilon(3S) X) < 9.4 x 10**-5..
CERN-PPE-97-078; CERN-L3-126.- Geneva : CERN, 1997 - 10 p. - Published in : Phys. Lett. B 413 (1997) 167-175 Fulltext: PDF; - Please contact the library if you need to access this document.
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3.
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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4.
Single and multi-photon events with missing energy in $e^+ e^-$ collisions at 161 GeV < $\sqrt{s}$ < 172 GeV / L3 Collaboration
A search for single and multi-photon events with missing energy is performed using data collected at centre-of-mass energies between 161 GeV and 172 GeV for a total of 20.9 pb$^{-1}$ of integrated luminosity. The results obtained are used to derive the value for the $\nu\bar{\nu}\gamma(\gamma)$ cross section as well as upper limits on new physics processes..
CERN-PPE-97-076; CERN-L3-124.- Geneva : CERN, 1997 - 19 p. - Published in : Phys. Lett. B 415 (1997) 299-310 Fulltext: PDF; - Please contact the library if you need to access this document.
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5.
Search for heavy neutral and charged leptons in $e^+ e^-$ annihilation at $\sqrt{s}$ = 161 GeV and $\sqrt{s}$ = 172 GeV / L3 Collaboration
A search for unstable neutral and charged heavy leptons as well as for stable charged heavy leptons has been made at center-of-mass energies $\sqrt{s}$ = 161 GeV and $\sqrt{s}$ = 172 GeV with the L3 detector at LEP. No evidence for their existence was found. [...]
CERN-PPE-97-075; CERN-L3-123.- Geneva : CERN, 1997 - 19 p. - Published in : Phys. Lett. B 412 (1997) 189-200 Fulltext: PDF; - Please contact the library if you need to access this document.
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6.
Study of hadronic events and measurements of $\alpha_{s}$ between 30 and 91 GeV / L3 Collaboration
We have studied the structure of hadronic events with a hard, %radiated isolated photon in the final state ($\mathrm{e^{+}e^{-}} \rightarrow$ Z $\rightarrow$ hadrons $+$ $\gamma$) in the 3.6 million hadronic data collected with the L3 detector at centre-of-mass energies around 91 GeV. The centre-of-mass energy of the hadronic system is in the range 30 GeV to 86 GeV [...]
CERN-PPE-97-074; CERN-L3-122.- Geneva : CERN, 1997 - 20 p. - Published in : Phys. Lett. B 411 (1997) 339-353 Fulltext: PDF; - Please contact the library if you need to access this document.
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7.
Resonance formation in the $\pi^+\pi^-\pi^0$ final state in two-photon collisions / L3 Collaboration
A study of resonance formation is presented in the $\pi^+\pi^-\pi^0$ final state in two-photon collisions at LEP. The $a_2(1320)$ radiative width is measured to be $\Gamma_{\gamma\gamma}=0.98\pm0.05\pm0.09$ keV{}. [...]
CERN-PPE-97-068; CERN-L3-121.- Geneva : CERN, 1997 - 19 p. - Published in : Phys. Lett. B 413 (1997) 147-158 Fulltext: PDF; - Please contact the library if you need to access this document.
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8.
Measurement of W-pair cross sections in $e^+ e^-$ interactions at $\sqrt{s}$ = 172 GeV and W decay branching fractions / L3 Collaboration
We report on the measurement of W-boson pair-production with the L3 detector at LEP at an average centre-of-mass energy of 172.13~GeV. In a data sample corresponding to a total luminosity of 10.25~pb$^{-1}$ we select 110 four-fermion events with pairs of hadronic jets or leptons with high invariant masses. [...]
CERN-PPE-97-067; CERN-L3-120.- Geneva : CERN, 1997 - 21 p. - Published in : Phys. Lett. B 407 (1997) 419-431 Fulltext: PDF; - Please contact the library if you need to access this document.
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9.
Search for anomalous four-jet events in $e^+ e^-$ annihilation at $\sqrt{s}$ = 130-172 GeV / L3 Collaboration
A study of hadronic events with high jet-multiplicity is performed using the data sample collected by the L3 experiment at LEP at $\sqrt{s}=130-172$ GeV. The observed event rates agree with the Standard Model predictions and upper limits are set on the production cross section of pairs of heavy particles that decay hadronically..
CERN-PPE-97-057; CERN-L3-119.- Geneva : CERN, 1997 - 14 p. - Published in : Phys. Lett. B 411 (1997) 330-338 Fulltext: PDF; - Please contact the library if you need to access this document.
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10.
Measurement of hadron and lepton pair production at 161 GeV < $\sqrt{s}$ < 172 GeV at LEP / L3 Collaboration
We report on measurements of $\mathrm{e^+e^-}$ annihilation into hadrons and lepton pairs. The data have been taken with the L3 detector at LEP at centre--of--mass energies between 161~$\mathrm{Ge\kern -0.12em V}$ and 172~$\mathrm{Ge\kern -0.12em V}$ [...]
CERN-PPE-97-052; CERN-L3-117.- Geneva : CERN, 1997 - 24 p. - Published in : Phys. Lett. B 407 (1997) 361-376 Fulltext: PDF; - Please contact the library if you need to access this document.
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CERN Document Server : Encontrados 55 registros   1 - 10siguientefinal  ir al registro:
Vea también: autores con nombres similares
1 Pinto, J O
1 Pinto, J P
1 Pinto, J R C
1 Pinto, J S
2 Pinto, J V
1 Pinto, J W M
8 Pinto, Jeffrey K
1 Pinto, Jervis
5 Pinto, Jorge Sousa
1 Pinto, José Gabriel
1 Pinto, Jude
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