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CERN Document Server 2,029 záznamov nájdených  1 - 10ďalšíkoniec  skoč na záznam: Hľadanie trvalo 1.34 sekúnd. 
1.
(100)
Measurement of the average lifetime of b-hadrons in Z decays / L3 Collaboration
We present a measurement of the average b-hadron lifetime ${\rm \tau_b}$ at the $\mathrm{e^+e^-} \, $ collider LEP. Using hadronic Z decays collected in the period from 1991 to 1994, two independent analyses have been performed [...]
CERN-PPE-97-127; CERN-L3-134.- Geneva : CERN, 1998 - 19 p. - Published in : Phys. Lett. B 416 (1998) 220-232 Fulltext: PDF; - Please contact the library if you need to access this document.
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2.
(91)
Measurement of the triple gluon vertex from double quark tagged 4-jet events / DELPHI Collaboration
The 4-jet events collected by the DELPHI experiment at LEP1 in 1992, 1993 and 1994 are analysed to determine the contribution of the triple-gluon vertex. Two of the four jets are tagged as jets from $b$- or $c$-quarks using lifetime and lepton transverse momentum information [...]
CERN-PPE-97-112.- Geneva : CERN, 1997 - 22 p. - Published in : Phys. Lett. B 414 (1997) 401-418 Fulltext: PDF; - CERN library copies
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3.
(87)
Measurement of the charged particle multiplicity of weakly decaying B hadrons / DELPHI Collaboration
From the $Z$ decays recorded in 1994 and 1995 by the DELPHI detector at LEP, the charged particle multiplicity of weakly decaying $B$ hadrons was measured to be: \begin{center} $4.97 \pm 0.03 \pm 0.06 \, ,$ \end{center} \noindent excluding the $K^0$ and $\Lambda$ decay products..
CERN-EP-98-034.- Geneva : CERN, 1998 - 17 p. - Published in : Phys. Lett. B 425 (1998) 399-412 Fulltext: PDF; - CERN library copies
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4.
(81)
Production of $\Sigma^{0}$ and $\Omega^{-}$ in Z decays / DELPHI Collaboration
Reconstructed \lam\ baryon decays and photon conversions in DELPHI are used to measure the \sig\ production rate from hadronic Z^0 decays at LEP. The number of \sig\ decays per hadronic Z decay is found to be: \begin{center} < \sig + \sigb > = \wffe{0.070}{0.010}{0.010 }{}. [...]
CERN-PPE-96-012.- Geneva : CERN, 1996 - 24 p. - Published in : Z. Phys. C 70 (1996) 371-382 Access to fulltext document: PDF; - CERN library copies
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5.
(80)
$K^{0}_{S}$ production in $\tau$ decays / ALEPH Collaboration
From a sample of about 160k $\mbox{Z}\!\!\to\!\!\tau^+\tau^-$ candidates collected with the ALEPH detector at LEP between 1991 and 1995, $\tau$ lepton decays involving $K^0_S\!\to\!\pi^+\pi^-$ are studied. The $K^0_SK^0_L$ associated production in $\tau$ decays is also investigated. [...]
CERN-PPE-97-167; FSU-SCRI-98-84.- Tallahassee, FL : Florida State Univ., 1998 - 28 p. ALEPH Papers - Published in : Eur. Phys. J. C 4 (1998) 29-45 Fulltext: PDF; - CERN library copies
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6.
(78)
Measurements of charmed-meson production in interactions between 350 GeV/c $\pi^-$ particles and nuclei / BEATRICE Collaboration
Charmed-meson production by $350$~GeV/$c$ {$\pi^-$} particles incident on copper and tungsten targets has been studied in the WA$92$ experiment, performed at the CERN $\Omega^\prime$ spectrometer. Results obtained are reported and discussed. [...]
CERN-PPE-96-180.- Geneva : CERN, 1997 - 37 p. - Published in : Nucl. Phys. B 495 (1997) 3-34 Fulltext: PDF; - CERN library copies
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7.
(75)
First study of the interference between initial and final state radiation at the Z resonance / DELPHI Collaboration
The interference between initial and final state radiation in the process \eemm\ at $\sqs \approx \MZ$ has been studied by measuring the forward-backward asymmetry as a function of the acoplanarity angle between the final state muons. The interference is expected to be sensitive to the space-time separation of the initial and final state radiation. [...]
CERN-PPE-96-044.- Geneva : CERN, 1996 - 16 p. - Published in : Z. Phys. C 72 (1996) 31-38 Fulltext: PDF; - CERN library copies
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8.
(72)
Searches for Lepton Number Violation in B-decays / Martinez Santos, D (CERN)
LHCb-TALK-2012-253.- Geneva : CERN, 2012 - 29 p. Fulltext: PDF;
In : 12th International Workshop on Tau Lepton Physics, Nagoya, Japan, 17 - 21 Sep 2012
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9.
(71)
Determination of the average lifetime of b-baryons / DELPHI Collaboration
The average lifetime of b-baryons has been studied using 3 \times 10^6 hadronic Z^0 decays collected by the DELPHI detector at LEP. Three methods have been used, based on the measurement of different observables: the proper decay time distribution of 206 vertices reconstructed with a \Lambda, a lepton and an oppositely charged pion; the impact parameter distribution of 441 muons with high transverse momentum accompanied by a \mLs in the same jet; and the proper decay time distribution of 125 \Lambda_c-lepton decay vertices with the \Lambda_c exclusively reconstructed through its pK\pi, pK^0 and \mLs3\pi decay modes [...]
CERN-PPE-96-021.- Geneva : CERN, 1996 - 26 p. - Published in : Z. Phys. C 71 (1996) 199-210 Fulltext: PDF; - CERN library copies
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10.
(69)
$\chi_{c2}$ 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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