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CERN Document Server 2,047 notices trouvées  1 - 10suivantfin  aller vers la notice: La recherche a duré 1.16 secondes. 
1.
(100)
The measurement of $\alpha_s$ from event shapes with the DELPHI detector at the highest LEP energies / DELPHI Collaboration
Hadronic event shape distributions are determined from data in e+e- collisions between 183 and 207 GeV. From these the strong coupling alpha_s is extracted in O(alpha_s^2), NLLA and matched O(alpha_s^2)+NLLA theory. [...]
hep-ex/0406011; CERN-EP-2004-007-[SIC!]; CERN-PH-EP-2004-007.- Geneva : CERN, 2004 - 47 p. - Published in : Eur. Phys. J. C 37 (2004) 1-23 Fulltext: PDF; External link: hep-ex/0406011 PDF - CERN library copies
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2.
(83)
Energy dependence of event shapes and of $\alpha_s$ at LEP 2 / DELPHI Collaboration
Infrared and collinear safe event shape distributions and their mean values are determined using the data taken at ve di erent centre of mass energies above $M_Z$ with the DELPHI detector at LEP. From the event shapes, the strong coupling $\alpha_s$ is extracted in $O(\alpha^2_s)$, NLLA and a combined scheme using hadronisation corrections evaluated with fragmentation model generators as well as using an analytical power ansatz. [...]
CERN-EP-99-044.- Geneva : CERN, 1999 - 18 p. - Published in : Phys. Lett. B 456 (1999) 322-340 Fulltext: PDF; - CERN library copies
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3.
(52)
Final results from DELPHI on the searches for SM and MSSM Neutral Higgs Bosons / DELPHI Collaboration
DELPHI-2003-035-CONF-655; CERN-DELPHI-2003-035-CONF-655.- Geneva : CERN, 2004 - 87 p. Fulltext: PDF;
In : EPS International Europhysics Conference on High-Energy Physics, Aachen, Germany, 17 - 23 Jul 2003
21st International Symposium on Lepton and Photon Interactions at High Energies, Batavia, IL, USA, 11 - 16 Aug 2003
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4.
(51)
Inclusive single particle production in two-photon collisions at LEP II with the DELPHI detector / DELPHI Collaboration
DELPHI-2006-010-CONF-756 ; CERN-DELPHI-2006-010-CONF-756 ; CERN-PH-DELPHI-Paper 362. - 2006. - 14 p.
Fulltext - Fulltext
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5.
(51)
Measurement of the $e^{+}e^{-} \to W^{+}W^{-} gamma$ Cross-section and Limits on Anomalous Quartic Gauge Couplings with DELPHI / DELPHI Collaboration
DELPHI-2003-059-CONF-679 ; CERN-DELPHI-2003-059-CONF-679. - 2003. - 15 p.
Fulltext - Fulltext
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6.
(51)
b-tagging in DELPHI at LEP / DELPHI Collaboration
DELPHI-2002-031-CONF-565; CERN-DELPHI-2002-031-CONF-565.- Geneva : CERN, 2004 - 55 p. Fulltext: PDF;
In : 31st International Conference on High Energy Physics, Amsterdam, The Netherlands, 25 - 31 Jul 2002
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7.
(50)
Measurement of alpha_s at centre-of-mass energies between 91 and 209GeV
 /ALEPH Collaboration
Consistent measurements of event-shape variables and alpha_s using the complete set of data taken with the ALEPH detector at LEP are presented. The strong coupling constant is determined from a fit of O(alpha_s^2)+NLLA QCD calculations to distributions of six event-shape variables at eight centre-of-mass energies. [...]
CERN-ALEPH-2002-012; CERN-ALEPH-CONF-2002-002.- Geneva : CERN, 2002 - 17 p. Fulltext: aleph-2002-012_fig1 - EPS; aleph-2002-012 - PDF;
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8.
(46)
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
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9.
(46)
Tuning and Test of Fragmentation Models Based on Identified Particles and Precision Event Shape Data / DELPHI Collaboration
Event shape and charged particle inclusive distributions are measured using 750000 decays of the $Z$ to hadrons from the DELPHI detector at LEP. These precise data allow a decisive confrontation with models of the hadronization process. [...]
CERN-PPE-96-120.- 1996 - Published in : Z. Phys. C 73 (1996) 11-60 Fulltext: PDF; - CERN library copies
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10.
(46)
A Measurement of $\alpha_s$ from the Scaling Violation in $e^+ e^-$ Annihilation / DELPHI Collaboration
The hadronic fragmentation functions of the various quark flavours and of gluons are measured in a study of the inclusive hadron production from $\zz$ decays with the DELPHI detector and are compared with the fragmentation functions measured elsewhere at energies between 14 GeV and 91 GeV. A large scaling violation is observed, which is used to extract the strong coupling constant from a fit using a numerical integration of the second order DGLAP evolution equations. [...]
CERN-PPE-96-185.- Geneva : CERN, 1997 - 18 p. - Published in : Phys. Lett. B 398 (1997) 194-206 Fulltext: PDF; - CERN library copies
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