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CERN Document Server 156 Datensätze gefunden  1 - 10nächsteEnde  gehen zum Datensatz: Die Suche hat 0.56 Sekunden gedauert. 
1.
Comparisons of Quark and Gluon Jets / Klapp, Oliver (Wuppertal U.) ; Langefeld, Patrick (Wuppertal U.) ; Reinhardt, Ralf (Wuppertal U.) /DELPHI
A summary of the latest results of the DELPHI Collaboration on the properties of identified quark and gluon jets is given. It covers the measurement of the fragmentation functions of gluons and quarks and their scaling violation behaviour as well as an analysis of the scale dependence of the multiplicities in gluon and quark jets. [...]
Hanoi : The Gioi, 2001 - 4 p. - Published in : , pp. 43-46 Fulltext: PDF;
In : 34th Rencontres de Moriond, Les Arcs, France, 20 - 27 Mar 1999, pp.43-46
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2.
Multiplicity in Hadronic Three Jet Events / Siebel, M ; Hamacher, K ; Klapp, O ; Langefeld, P
DELPHI-2001-067-CONF-495 ; CERN-DELPHI-2001-067-CONF-495. - 2001. - 17 p.
Fulltext - Fulltext
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3.
Precision electroweak measurements on the $Z$ resonance / ALEPH Collaboration
We report on the final electroweak measurements performed with data taken at the Z resonance by the experiments operating at the electron-positron colliders SLC and LEP. The data consist of 17 million Z decays accumulated by the ALEPH, DELPHI, L3 and OPAL experiments at LEP, and 600 thousand Z decays by the SLD experiment using a polarised beam at SLC. [...]
hep-ex/0509008; SLAC-R-774; CERN-PH-EP-2005-041; SLAC-R-774; CERN-L3-304.- Geneva : CERN, 2006 - 302 p. ALEPH Papers - Published in : Phys. Rep. 427 (2006) 257 Fulltext: phep-2005-041 - PDF; arXiv:hep-ex_0509008 - PDF; External link: SLAC Document Server
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4.
Properties of gluon and quark jets / Langefeld, P (Wuppertal U.)
This is a summary of the latest results of the DELPHI collaboration on the properties of quark and identified gluon jets. It covers the measurement of the quark and gluon splitting kernels, the fragmentation functions of gluon and quark jets and their scaling violation behavior as well as an analysis of the scale dependence of the multiplicities of gluon and quark jets. [...]
2000
In : 28th International Symposium on Multiparticle Dynamics, Delphi, Greece, 6 - 11 Sep 1998, pp.394-401
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5.
Study of $B^0_s - \overline{B^0_s}$ oscillations and $B^0_s$ lifetimes using hadronic decays of $B^0_s$ mesons / DELPHI Collaboration
The combination of these results with those obtained using $\mathrm{\rm{D}_{s}^{\pm}} \ell^{\mp}$ sample gives: %\cite{ref:dsl} \bes \ba{c} \dms > 4.9~\mbox{ps}^{-1}~\mbox{at the 95\% C.L.} \\ \mbox{$\mathrm{with~ a~ sensitivity~ of}$}~\dms = 8.7~\mbox{ps}^{-1}. \ea \ees \begin{center} $\tau_{\Bs} = 1.46\pm{0.11}~\mathrm{ps}~$ and $~\dgbs < 0.45~\mbox{at the 95\% C.L.}$
hep-ex/0105077; CERN-EP-2000-087; CERN-EP-2000-087.- Geneva : CERN, 2000 - 42 p. - Published in : Eur. Phys. J. C 18 (2000) 229-252 Fulltext: arXiv:hep-ex_0105077 - PDF; ep-2000-087 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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6.
Measurement of the $B^0_s$ Lifetime and Study of $B^0_s - \overline{B^0_s}$ Oscillations using $D_{s}l$ Events / DELPHI Collaboration
Lifetime and oscillations of $\Bs$ mesons have been studied in eventswith a large transverse momentum lepton and a $\Ds$ of opposite electric charge>the same hemisphere, selected from about 3.6 million hadronic $\Zz$decays accumulated by DELPHI between 1992 and 1995. \\The $\Bs$ lifetime and the fractional width difference between the two physical>
hep-ex/0107077; CERN-EP-2000-043; CERN-EP-2000-043.- Geneva : CERN, 2000 - 47 p. - Published in : Eur. Phys. J. C 16 (2000) 555-578 Fulltext: ep-2000-043 - PDF; arXiv:hep-ex_0107077 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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7.
More About the Multiplicity of Symmetric Three Jet Events / Hamacher, K ; Klapp, O ; Langefeld, P ; Siebel, M /DELPHI Collaboration
The measurement of the hadron multiplicity in mirror symmetric threejet events is compared to recent theoretical calculations.Jets are defined with the Cambridge algorithm.From this data in comparison to the hadronic multiplicity in \epem--annihilation a determination of the gluon to quarkcolour factor ratio yields:\begin{equation*}\frac{C_A}{C_F}= 2.221 \pm 0.032(\mathrm{stat}) \pm 0.047(\mathrm{exp})\pm 0.058(\mathrm{hadc}) \pm 0.075(\mathrm{theo}) \quad .\end{equation*}A measurement of the hadron multiplicity in equivalent gluon gluon events asfunction of the energy scale is presented.The increase with energy scale of the hadron multiplicity in gluongluon events is observed to be about twice as strong as inquark antiquark events. This presents very direct evidence for thetriple gluon vertex and the higher colour charge of the gluon..
CERN-OPEN-2000-134; DELPHI-2000-118-CONF-417.- Geneva : CERN, 2001 - 14 p. Access to fulltext document: PDF; External link: Published version
In : 30th International Conference on High-energy Physics, Osaka, Japan, 27 Jul - 2 Aug 2000, pp.e-page 388
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8.
Cross-Sections and Leptonic Forward-Backward Asymmetries from the $Z^0$ Running of LEP / DELPHI Collaboration
During 1993 and 1995 LEP was run at 3 energies near the Z$^0$ peak in order to give improved measurements of the mass and width of the resonance. During 1994, LEP operated only at the Z$^0$peak. [...]
CERN-EP-2000-037; CERN-DELPHI-98-113-CONF-175; CERN-OPEN-2000-031.- Geneva : CERN, 2000 - 61 p. - Published in : Eur. Phys. J. C 16 (2000) 371-405 Fulltext: PDF; External link: Published version
In : 30th International Conference on High-energy Physics, Osaka, Japan, 27 Jul - 2 Aug 2000, pp.e-page 394 - CERN library copies
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9.
Consistent Measurements of $\alpha_{s}$ from Precise Oriented Event Shape Distributions / DELPHI Collaboration
An updated analysis using about 1.5 million events recorded at $\sqrt{s} =M_Z$ with the DELPHI detector in 1994 is presented. Eighteen infrared and collinear safe event shape observables are measured as a function of the polar angle of the thrust axis. [...]
hep-ex/0002026; CERN-EP-99-133; CERN-EP-99-133-REV.- Geneva : CERN, 2000 - 51 p. - Published in : Eur. Phys. J. C 14 (2000) 557-584 Fulltext: 0002026 - PDF; arXiv:hep-ex_0002026 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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10.
A search for heavy stable charged and long-lived squarks and sleptons in $e^+ e^-$ collisions at energies from 130 to 183 GeV / DELPHI Collaboration
CERN-OPEN-2000-005 ; CERN-DELPHI-98-88-CONF-156. - 1998. - 16 p.
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