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CERN Document Server 2,028 записей найдено  1 - 10следующийконец  перейти к записи: Поиск длился 0.27 секунд. 
1.
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Multiplicity fluctuations in L3 and QCD / Chekanov, S V ; Kittel, E W ; Mangeol, D J J ; Metzger, W J /L3 Collaboration
Multiplicity fluctuations are studied both globally (in terms of high-order moments) and locally (in terms of small phase-space intervals). The ratio of cumulant factorial to factorial moments of the charged-particle multiplicity distribution shows a quasi- oscillatory behavior similar to that predicted by the NNLLA of perturbative QCD. [...]
Geneva : CERN, 1999
In : 13th Lake Louise Winter Institute on Quantum Chromodynamics, Lake Louise, Canada, 15 - 21 Feb 1998, pp.412-21
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Multiplicities, fluctuations and QCD : Interplay between soft and hard physics? / Kittel, W. (Nijmegen U.) ; Chekanov, S.V. (Nijmegen U.) ; Mangeol, D.J. (Nijmegen U.) ; Metzger, W.J. (Nijmegen U.)
Multiplicity fluctuations are studied both globaly (in terms of high-order moments) and locally (in terms of small phase-space intervals). The ratio of cumulant factorial to factorial moments of the charged-particle multiplicity distribution shows a quasi-oscillatory behaviour similar to that predicted by the NNLLA of perturbative QCD. [...]
hep-ex/9712003.- 1999 - 11 p. - Published in : Nucl. Phys. B, Proc. Suppl. 71 (1999) 90-99 Access to fulltext document: PDF; Fulltext: PDF; External link: hep-ex/9712003 PDF
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Oscillation of $_{q}$ moments as not a test of QCD / Metzger, W J
The ratio of cumulant factorial to factorial moments of the charged particle multiplicity distribution shows oscillatory behaviour similar to that predicted by NNLLA. However, an analysis of the jet multiplicity distribution finds these oscillations only at nonperturbative scales. [...]
2000
In : 28th International Symposium on Multiparticle Dynamics, Delphi, Greece, 6 - 11 Sep 1998, pp.199-206
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Angular Intermittency and Analytical QCD Predictions / Chekanov, S.V. (Nijmegen U.) /L3 Collaboration
We present a comparison of local multiplicity fluctuations in angular phase-space intervals with first-order QCD predictions. The data are based on 810k hadronic events at 91.2 GeV collected with the L3 detector at LEP during 1994..
hep-ex/9707012.- 1997 - 4 p. - Published in : (1997) , pp. 307-308 Access to fulltext document: PDF; Fulltext: arXiv:hep-ex_9707012 - PDF; C97-03-22_P307 - PDF; External link: hep-ex/9707012 PDF
In : 32nd Rencontres de Moriond, Les Arcs, France, 22 - 29 Mar 1997, pp.307-308
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Search for the standard model Higgs boson in $e^{+}e^{-}$ four- jet topology using neural networks and discriminant analysis / Mjahed, M
We present an attempt to separate between Higgs boson events (e/sup + /e/sup -/ to ZH to qqbb) and other physics processes in the 4-jet channel (e/sup +/e/sup -/ to Z/ gamma , W/sup +/W, ZZ to 4jets), using the discriminant analysis and neural networks methods. Events were produced at LEP2 energies, using the Lund Monte Carlo generator and the Aleph package. [...]
2003 - Published in : Nucl. Phys. B, Proc. Suppl. 119 (2003) 1027-9
In : 20th International Symposium on Lattice Field Theory, Cambridge, MA, USA, 24 - 29 Jun 2002, pp.1027-9
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Measurement of the scaling property of factorial moments in hadronic Z decay / Chen, G ; Hu, Y ; Liu, L S ; Kittel, E W ; Metzger, W J
Both three- and one-dimensional studies of local multiplicity fluctuations in hadronic Z decay are performed using data of the L3 experiment at LEP. The normalized factorial moments in three dimensions exhibit power-law scaling, indicating that the fluctuations are isotropic, which corresponds to a self-similar fractal. [...]
2002
In : 31st International Symposium on Multiparticle Dynamics, Datong, China, 1 - 7 Sep 2001, pp.361-4
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Multiplicity studies at HERA / Brook, N H
The factorial moments and the mean of the charged multiplicity distribution have been investigated in neutral-current deep inelastic scattering. The measurements are compared to data from other interactions and theoretical QCD predictions made in the double logarithmic approximation in conjunction with local parton hadron duality..
2001
In : 30th International Conference on High-energy Physics, Osaka, Japan, 27 Jul - 2 Aug 2000, pp.546-7 (vol.1)
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New results on multiplicity, identified particles and spin measurements in $e^{+}e^{-}$ collisions / Nomokonov, Vasilii (Helsinki Inst. of Phys.)
The analyses of recent LEP data provide us with a rich ground for pQCD and LPHD tests. A number of non-trivial effects predicted in the framework of MLLA are experimentally verified. [...]
hep-ex/9910059.- Geneva : CERN, 2000 - 4 p. - Published in : , pp. 492-494 Access to fulltext document: PDF; Fulltext: PDF; External link: hep-ex/9910059 PDF
In : International Europhysics Conference on High-Energy Physics, Tampere, Finland, 15 - 21 Jul 1999, pp.492-494
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Large p$_{T}$ double photon production in hadronic collisions : beyond leading logarithm QCD calculation / Aurenche, Patrick ; Douiri, A ; Baier, R ; Fontannaz, M ; Schiff, D
LPTHE-85-20. - 1985. - 67 p.
CERN library copies
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Self-affine analysis for the dynamical fluctuations inside jets produced in high energy hadron-hadron collisions / Yin Jian Wu ; Liu Feng ; Lian Shou Liu
A self-affine analysis is performed on the jets (minijets) produced in proton- antiproton collisions at CERN-SppS collider energy. The jets are identified by the "Cone algorithm". [...]
2002 - Published in : High Energy Phys. Nucl. Phys.: 26 (2002) , no. 2, pp. 152-7
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