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CERN Document Server Encontrados 79 registros  1 - 10siguientefinal  ir al registro: La búsqueda tardó 0.70 segundos. 
1.
Kaon Interference in the Hadronic Decays of the $Z^{0}$ / DELPHI Collaboration
The first measurement of like-sign charged kaon correlations in hadronic decays of the Z$^0$ is presented, based on data collected by the DELPHI detector. The charged kaons are identified by means of ring imaging Cherenkov detectors. [...]
CERN-PPE-96-054.- Geneva : CERN, 1996 - 16 p. - Published in : Phys. Lett. B 379 (1996) 330-340 Fulltext: PDF; External links: Fulltext; Fulltext - CERN library copies
2.
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
3.
Mean lifetime of the B$_{s}^{0}$ meson / DELPHI Collaboration
This paper presents an update of the measurement of the mean lifetime of the B^0_s meson. Combining D_s - \ell, D_s-h, \phi - \ell and inclusive D_s final states from the 3.2 million hadronic \Zz decays collected by DELPHI between 1991 and 1994, the B^0_s mean lifetime was measured to be: \tau(B^0_s) = 1.67 ~\pm 0.14, M014AU
CERN-PPE-96-032.- Geneva : CERN, 1996 - 45 p. - Published in : Z. Phys. C 71 (1996) 11-30 Fulltext: PDF; - CERN library copies
4.
First measurement of f'$_{2}$(1525) production in Z$^{0}$ hadronic decays / DELPHI Collaboration
\newcommand{\zz}{Z^{0}} Inclusive production of the f'_{2}(1525) in hadronic \zz\ decays has been studied in data collected by the DELPHI detector at LEP. The Ring Imaging Cherenkov detectors were important tools in the identification of the decay f'_{2}(1525)\rightarrow K^+K^-. [...]
CERN-PPE-96-026.- Geneva : CERN, 1996 - 12 p. - Published in : Phys. Lett. B 379 (1996) 309-318 Fulltext: PDF; - CERN library copies
5.
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
6.
Measurement of the partial decay width R$_{b}^{0}$ = $\Gamma_{b\overline{b}}$/$\Gamma_{had}$ of the Z with the DELPHI detector at LEP / DELPHI Collaboration
The partial decay width of the Z to b\overline{ b} quark pairs has been measured by the DELPHI detector at LEP. B-hadrons, containing b-quarks, were tagged by several methods using tracks with large impact parameters to the primary vertex complemented sometimes by event shape variables or using leptons with high transverse momentum relative to the hadron. [...]
CERN-PPE-96-015.- Geneva : CERN, 1996 - 31 p. - Published in : Z. Phys. C 70 (1996) 531-548 Fulltext: PDF; - CERN library copies
7.
Search for exclusive decays of the $\Lambda_{b}$ baryon and measurement of its mass / DELPHI Collaboration
A search for fully reconstructed \lb beauty baryons is performed using about 3 million Z decays collected with the DELPHI detector at LEP. The analysis relies on the combined use of the accurate tracking and of the hadron identification capabilities of DELPHI. [...]
CERN-PPE-96-016.- Geneva : CERN, 1996 - 14 p. - Published in : Phys. Lett. B 374 (1996) 351-361 Fulltext: PDF; - CERN library copies
8.
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
9.
Updated precision measurement of the average lifetime of B hadrons / DELPHI Collaboration
The measurement of the average lifetime of B hadrons using inclusively reconstructed secondary vertices has been updated using both an improved processing of previous data and additional statistics from new data. This has reduced the statistical and systematic uncertainties and gives \tau_{\mathrm{B}} = 1.582 \pm 0.011\ \mathrm{(stat.)} \pm 0.027\ \mathrm{(syst.)}\ \mathrm{ps.} Combining this result with the previous result based on charged particle impact parameter distributions yields \tau_{\mathrm{B}} = 1.575 \pm 0.010\ \mathrm{(stat.)} \pm 0.026\ \mathrm{(syst.)}\ \mathrm{ps.}
CERN-PPE-96-013.- Geneva : CERN, 1996 - 13 p. - Published in : Phys. Lett. B 377 (1996) 195-204 Fulltext: PDF; - CERN library copies
10.
Determination of |V$_{cb}$| from the semileptonic decay B$^{0}$ --> D$*^{-}$l$^{+}\nu$ / DELPHI Collaboration
Semileptonic decays B \rightarrow D^{*-} \ell^+ \nu X were selected from a sample of 3.1 million hadronic Z decays collected by the DELPHI detector at LEP. A topological search for semileptonic B decays to resonant %(D^{**}) and non-resonant D^{*-} \pi^{+} states was performed and the ratio of the branching fractions: \frac {Br ({\mathrm{B} \rightarrow {\mathrm D}^{*-}} \ell^+ \nu X)} {Br({\mathrm{B} \rightarrow {\mathrm D}^{*-}} \ell^+ \nu X) + Br( {\mathrm{B}^0 \rightarrow \mathrm{D}^{*-}} \ell^+ \nu)} = 0.19 \pm 0.10({\mathrm{stat}}) \pm 0.06({\mathrm{syst}}) was determined. [...]
CERN-PPE-96-011.- Geneva : CERN, 1996 - 32 p. - Published in : Z. Phys. C 71 (1996) 539-554 Fulltext: PDF; - CERN library copies

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2 Bosworth, Seymour
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