HAL : in2p3-00273902, version 1
 arXiv : 0802.3182
 Two-Particle Momentum Correlations in Jets Produced in ppbar Collisions at s**(1/2) = 1.96-TeV
 CDF Collaboration(s)
 (2008)
 We present the first measurement of two-particle momentum correlations in jets produced in $p\bar p$ collisions at $\sqrt{s}=1.96$ TeV. Results are obtained for charged particles within a restricted cone with an opening angle of 0.5 radians around the jet axis and for events with dijet masses between 66 and 563 GeV/c$^{2}$. A comparison of the experimental data to theoretical predictions obtained for partons within the framework of resummed perturbative QCD in the next-to-leading log approximation (NLLA) shows that the parton momentum correlations survive the hadronization stage of jet fragmentation, giving further support to the hypothesis of local parton-hadron duality. The extracted value of the NLLA parton shower cutoff scale $Q_\mathit{eff}$ set equal to $\Lambda_\mathit{QCD}$ is found to be $(1.4^{+0.9}_{-0.7})\times 100$ MeV.
 Thème(s) : Physique/Physique des Hautes Energies - Expérience
 Lien vers le texte intégral : http://fr.arXiv.org/abs/0802.3182
 in2p3-00273902, version 1 http://hal.in2p3.fr/in2p3-00273902 oai:hal.in2p3.fr:in2p3-00273902 Contributeur : Swarna Bassava <> Soumis le : Jeudi 17 Avril 2008, 15:20:50 Dernière modification le : Jeudi 17 Avril 2008, 15:47:22