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CERN Document Server 找到 2,047 笔记录  1 - 10下一个最後  跳到记录: 检索需时 1.34 秒. 
1.
(100)
Particle multiplicity of unbiased gluon jets from $e^+ e^-$ three-jet events / OPAL Collaboration
The charged particle multiplicities of two- and three-jet events from the reaction e+e- -> Z0 -> hadrons are measured for Z0 decays to light quark (uds) flavors. Using recent theoretical expressions to account for biases from event selection, results corresponding to unbiased gluon jets are extracted over a range of jet energies from about 11 to 30 GeV. [...]
hep-ex/0111013; CERN-EP-2001-076; CERN-EP-2001-076.- Geneva : CERN, 2002 - 34 p. - Published in : Eur. Phys. J. C 23 (2002) 597-613 Fulltext: ep-2001-076 - PDF; arXiv:hep-ex_0111013 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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2.
(91)
The Scale Dependence of the Hadron Multiplicity in Quark and Gluon Jets and a Precise Determination of $C_{A}/C_{F}$ / DELPHI Collaboration
Data collected at the Z resonance using the DELPHI detector at LEP are used to determine the charged hadron multiplicity in gluon and quark jets as a function of a transverse momentum-like scale. The colour factor ratio, \cacf, is directly observed in the increase of multiplicities with that scale [...]
hep-ex/9903073; CERN-EP-99-003; CERN-EP-99-03; CERN-EP-99-3; CERN-EP-99-003.- Geneva : CERN, 1999 - 21 p. - Published in : Phys. Lett. B 449 (1999) 383 Fulltext: ep-99-003 - PDF; arXiv:hep-ex_9903073 - PDF; External link: DURHAM - Please contact the library if you need to access this document.
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3.
(89)
Charged-particle multiplicity in three-jet events and two-gluon systems / DELPHI Collaboration
The charged particle multiplicity in hadronic three-jet events from Z decays is investigated. The topology dependence of the event multiplicity is found to be well described by a modified leading logarithmic prediction. [...]
hep-ex/0510025; CERN-PH-EP-2005-019; CERN-EP-PH-2005-019-[SIC!]; CERN-PH-EP-2005-019.- Geneva : CERN, 2005 - 37 p. - Published in : Eur. Phys. J. C 44 (2005) 311-331 Fulltext: 0510025 - PDF; arXiv:hep-ex_0510025 - PDF; External link: Preprint
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4.
(86)
Experimental properties of gluon and quark jets from a point source / OPAL Collaboration
Gluon jets are identified in hadronic Z0 decays as all the particles in a hemisphere opposite to a hemisphere containing two tagged quark jets. Gluon jets defined in this manner are equivalent to gluon jets produced from a color singlet point source and thus correspond to the definition employed for most theoretical calculations. [...]
hep-ex/9903027; CERN-EP-99-028; CERN-EP-99-028.- Geneva : CERN, 1999 - 45 p. - Published in : Eur. Phys. J. C 11 (1999) 217-238 Fulltext: 9903027 - PDF; arXiv:hep-ex_9903027 - PDF; External link: DURHAM - Please contact the library if you need to access this document.
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5.
(85)
Experimental studies of unbiased gluon jets from $e^{+}e^{-}$ annihilations using the jet boost algorithm / OPAL Collaboration
We present the first experimental results based on the jet boost algorithm, a technique to select unbiased samples of gluon jets in e+e- annihilations, i.e. gluon jets free of biases introduced by event selection or jet finding criteria. [...]
hep-ex/0310048; CERN-EP-2003-067; CERN-EP-2003-067.- Geneva : CERN, 2004 - 41 p. - Published in : Phys. Rev. D 69 (2004) 032002 APS Published version, local copy: PDF; Fulltext: ep-2003-067 - PDF; arXiv:hep-ex_0310048 - PDF; External links: Fulltext; Rivet analyses reference - Please contact the library if you need to access this document.
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6.
(79)
Production of $K^{0}_{S}$ and $\Lambda$ in Quark and Gluon Jets from $Z^{0}$ Decay / OPAL Collaboration
The production of K^0_S mesons and Lambda baryons in quark and gluon jets has been investigated using two complementary techniques. In the first approach, which provides high statistical accuracy, jets were selected using different jet finding algorithms and ordered according to their energy. [...]
hep-ex/9805025; CERN-EP-98-058; CERN-EP-98-58; CERN-EP-98-058.- Geneva : CERN, 1999 - 32 p. - Published in : Eur. Phys. J. C 8 (1999) 241-54 Fulltext: ep-98-058 - PDF; 9805025 - PDF; arXiv:hep-ex_9805025 - PDF; External link: DURHAM - Please contact the library if you need to access this document.
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7.
(78)
Photon and light meson production in hadronic $Z^{0}$ decays / OPAL Collaboration
The inclusive production rates and differential cross-sections of photons and mesons with a final state containing photons have been measured with the OPAL detector at LEP. The light mesons covered by the measurements are the \pi^0, \eta, \rho(770)+-, \omega(782), \eta'(958) and a_0(980)+-. [...]
hep-ex/9805011; CERN-EP-98-054; CERN-EP-98-054.- Geneva : CERN, 1998 - 53 p. - Published in : Eur. Phys. J. C 5 (1998) 411-437 Fulltext: ep-98-054 - PDF; arXiv:hep-ex_9805011 - PDF; External links: Fulltext; Rivet analyses reference - Please contact the library if you need to access this document.
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8.
(78)
Measurement of the Production Rate of Charm Quark Pairs from Gluons in Hadronic $Z^{0}$ Decays / OPAL Collaboration
The rate of secondary charm-quark-pair production has been measured in 4.4 million hadronic Z0 decays collected by OPAL. By selecting events with three jets and tagging charmed hadrons in the gluon jet candidate using leptons and charged D* mesons, the average number of secondary charm-quark pairs per hadronic event is found to be (3.20+-0.21+-0.38)x10-2..
hep-ex/9908001; CERN-EP-99-089; CERN-EP-99-089.- Geneva : CERN, 2000 - 23 p. - Published in : Eur. Phys. J. C 13 (2000) 1-13 Fulltext: 9908001 - PDF; arXiv:hep-ex_9908001 - PDF; External link: hep-ex/9908001 PDF - Please contact the library if you need to access this document.
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9.
(74)
Identified Charged Particles in Quark and Gluon Jets / DELPHI Collaboration
A sample of 2.2 million hadronic \z decays, selected fythe {\sc Delphi} detector at {\sc Lep} during 1994-199nimprovedmeasurement of inclusive distributions of \pie, \kp anrantiparticles in gluon and quark jets. The production l identified particles were found to be softer in gluon kjets, with a higher multiplicity in gluon jets as obseecharged particles. [...]
hep-ex/0106063; CERN-EP-2000-007; CERN-EP-2000-007.- Geneva : CERN, 2000 - 26 p. - Published in : Eur. Phys. J. C 17 (2000) 207-222 Fulltext: ep-2000-007_version1 - PDF; ep-2000-007_version3 - PDF; ep-2000-007_version2 - PDF; arXiv:hep-ex_0106063 - PDF; External link: Preprint - Please contact the library if you need to access this document.
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10.
(74)
Bose-Einstein correlations of three charged pions in hadronic $Z^{0}$ decays / OPAL Collaboration
Bose-Einstein Correlations (BEC) of three identical charged pions were studied in 4 x 10^6 hadronic Z^0 decays recorded with the OPAL detector at LEP. The genuine three-pion correlations, corrected for the Coulomb effect, were separated from the known two-pion correlations by a new subtraction procedure. [...]
hep-ex/9806036; CERN-EP-98-068; CERN-EP-98-68; CERN-EP-98-068.- Geneva : CERN, 1998 - 19 p. - Published in : Eur. Phys. J. C 5 (1998) 239-248 Fulltext: arXiv:hep-ex_9806036 - PDF; 9806036 - PDF; External link: hep-ex/9806036 PDF - Please contact the library if you need to access this document.
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