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Low- and intermediate-pT di-hadron distributions in Au + Au collisions at \sqrt{s_{\rm NN}}=200 GeV from STAR

M J Horner (for the STAR Collaboration)

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We present a study of low- and intermediate-pT correlated azimuthal angular distributions in Au+Au collisions at \sqrt{s_{\rm NN}}=200 \hbox{ GeV} from STAR. The near side associated yields in Au+Au collisions are found to be strongly enhanced, due to contributions from large Δη. The enhancement is reduced for high ptrigT. We show a strong broadening and enhancement of the away-side yield. The evolution of the away-side shape may be explained as the sum of a broad structure from bulk response and a narrow peak from jet fragmentation.


PACS

25.75.Dw Particle and resonance production

24.85.+p Quarks, gluons, and QCD in nuclear reactions

25.70.Mn Projectile and target fragmentation

27.80.+w 190(less-than-or-equal-to)A(less-than-or-equal-to)219

25.75.Gz Particle correlations and fluctuations

Subjects

Nuclear physics

Dates

Issue 8 (August 2007)

Received 29 January 2007

Published 17 July 2007



  1. Low- and intermediate-pT di-hadron distributions in Au + Au collisions at \sqrt{s_{\rm NN}}=200 GeV from STAR

    M J Horner (for the STAR Collaboration) 2007 J. Phys. G: Nucl. Part. Phys. 34 S995

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