Distributions of charged hadrons associated with high transverse momentum particles in pp and Au + Au collisions at s(NN)**(1/2) = 200-GeV - INSPIRE

DataBETA

Distributions of charged hadrons associated with high transverse momentum particles in pp and Au + Au collisions at s(NN)**(1/2) = 200-GeV

STAR

Collaboration

Jan, 2005

6 pages

Published in:

Phys.Rev.Lett. 95 (2005) 152301

e-Print:

nucl-ex/0501016 [nucl-ex]

DOI:

10.1103/PhysRevLett.95.152301

Experiments:

BNL-RHIC-STAR

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Abstract:

Charged hadrons in 0.15 < pt < 4 GeV/c associated with particles of pt^trig > 4 GeV/c are reconstructed in pp and Au+Au collisions at sqrt(s_NN)=200 GeV. The associated multiplicity and pt magnitude sum are found to increase from pp to central Au+Au collisions. The associated pt distributions, while similar in shape on the near side, are significantly softened on the away side 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 away-side fragments approach equilibration with the medium traversed.

Note:

Data tables available at http://www.star.bnl.gov/central/publications •
6 pages, 4 figures, 1 tables. Data tables are available at http://www.star.bnl.gov/central/publications/ Final version Journal-ref: Phys.Rev.Lett. 95 (2005) 152301

25.75.Dw
heavy ion-nucleus reactions
nuclei with mass number 190 to 219
proton-proton inclusive interactions
quantum chromodynamics
p p: colliding beams
nucleus nucleus: colliding beams
scattering: heavy ion
gold
hadron: hadroproduction

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