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Distributions of charged hadrons associated with high transverse momentum particles in pp and Au plus Au collisions at root(S)(NN)=200 GeV

Adams, J; Adler, C; Aggarwal, MM; Ahammed, Z; Amonett, J; Anderson, BD; Arkhipkin, D; ... STAR Collaboration; + view all (2005) Distributions of charged hadrons associated with high transverse momentum particles in pp and Au plus Au collisions at root(S)(NN)=200 GeV. PHYS REV LETT , 95 (15) , Article 152301. 10.1103/PhysRevLett.95.152301. Green open access

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Abstract

Charged hadrons in 0.15 < p(perpendicular to)< 4 GeV/c associated with particles of p(perpendicular to)(trig)> 4 GeV/c are reconstructed in pp and Au+Au collisions at root s(NN)=200 GeV. The associated multiplicity and p(perpendicular to) magnitude sum are found to increase from pp to central Au+Au collisions. The associated p(perpendicular to) distributions, while similar in shape on the nearside, are significantly softened on the awayside in central Au+Au relative to pp and not much harder than that of inclusive hadrons. The results, consistent with jet quenching, suggest that the awayside fragments approach equilibration with the medium traversed.

Type: Article
Title: Distributions of charged hadrons associated with high transverse momentum particles in pp and Au plus Au collisions at root(S)(NN)=200 GeV
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.95.152301
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.95.152301
Language: English
Additional information: © 2005 The American Physical Society
Keywords: ENERGY-LOSS, QCD
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/1324884
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