HAL : in2p3-00023222, version 1
 arXiv : nucl-ex/0408012
 Journal of Physics G: Nuclear and Particle Physics 34 (2007) 799-816
 Two-particle correlations on transverse momentum and minijet dissipation in Au-Au collisions at $\sqrt{s_{NN}}$ = 130 GeV
 STAR Collaboration(s)
 (2007)
 We present the first measurements of two-particle correlations on transverse momentum $p_t$ for Au-Au collisions at $\sqrt{s_{NN}} = 130$ GeV. Significant large-momentum-scale correlation structures are observed for charged primary hadrons with $0.15 \leq p_t \leq 2$ GeV/$c$ and pseudorapidity $|\eta| \leq 1.3$. Such correlations were not observed in a similar study at lower energy and are not predicted by theoretical collision models. The observed correlation structure is consistent with a scenario in which initial-state semi-hard parton scattering and fragmentation are modified by in-medium dissipation.
 Thème(s) : Physique/Physique Nucléaire Expérimentale
 Lien vers le texte intégral : http://fr.arXiv.org/abs/nucl-ex/0408012
 in2p3-00023222, version 1 http://hal.in2p3.fr/in2p3-00023222 oai:hal.in2p3.fr:in2p3-00023222 Contributeur : Yvette Heyd <> Soumis le : Jeudi 14 Octobre 2004, 09:14:33 Dernière modification le : Mardi 4 Décembre 2007, 10:00:20