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Disappearance of back-to-back high-p(T) hadron correlations in central Au+Au collisions at root s(NN)=200 GeV

Adler, C; Ahammed, Z; Allgower, C; Amonett, J; Anderson, BD; Anderson, M; Averichev, GS; ... STAR Collaboration, .; + view all (2003) Disappearance of back-to-back high-p(T) hadron correlations in central Au+Au collisions at root s(NN)=200 GeV. PHYS REV LETT , 90 (8) , Article 082302. 10.1103/PhysRevLett.90.082302. Green open access

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Abstract

Azimuthal correlations for large transverse momentum charged hadrons have been measured over a wide pseudorapidity range and full azimuth in Au+Au and p+p collisions at roots(NN)=200 GeV. The small-angle correlations observed in p+p collisions and at all centralities of Au+Au collisions are characteristic of hard-scattering processes previously observed in high-energy collisions. A strong back-to-back correlation exists for p+p and peripheral Au+Au. In contrast, the back-to-back correlations are reduced considerably in the most central Au+Au collisions, indicating substantial interaction as the hard-scattered partons or their fragmentation products traverse the medium.

Type: Article
Title: Disappearance of back-to-back high-p(T) hadron correlations in central Au+Au collisions at root s(NN)=200 GeV
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.90.082302
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.90.082302
Language: English
Additional information: © 2003 The American Physical Society
Keywords: LARGE TRANSVERSE-MOMENTUM, JET CROSS-SECTION, ANTI-PROTON COLLIDER, PARTICLE-PRODUCTION, PBARP COLLISIONS, ENERGY-LOSS, DEPENDENCE, FRAGMENTATION, SUPPRESSION, MATTER
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/1324900
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