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Azimuthal Anisotropy of Identified Hadrons in 200 GeV Au+Au Collisions

โœ Scribed by M. Oldenburg

Book ID
104069422
Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
219 KB
Volume
774
Category
Article
ISSN
0375-9474

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โœฆ Synopsis

The azimuthal anisotropy parameter v 2 has been measured with high statistics for identified hadrons in โˆš s NN = 200 GeV Au+Au collisions with the STAR experiment. At high transverse momentum (p T ) a strong v 2 for ฯ€ + + ฯ€ -and p + p is observed. In the intermediate p T region, number-of-constituent-quark scaling was tested to high precision.

A detailed comparison of v 2 for the multi-strange hadrons ฯ†, ฮž -+ ฮž + , and ฮฉ -+ ฮฉ + with other particle species substantiates the development of collectivity among partons in the early phase of the collisions at RHIC.

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We present transverse momentum distributions of charged hadrons prodwed in Au+Au collisions at ,/.snynr = 200 C&V. The evolution of thp spectra. for tranwerse rnomenta~ pi from 0.25 to 5 &V/C is studied a,s a functian of co&&m centrality. We find a significant change of the spectral shape between pr