Azimuthal di-hadron correlations in d+ Au and Au+Au collisions at sNN=200 GeV measured at the STAR detector
نویسندگان
چکیده
Citation Aggarwal, M. et al. " Azimuthal di-hadron correlations in d+ Au and Au+Au collisions at sqrt[s_{NN}]=200 GeV measured at the STAR detector. " Physical Review C 82.2 (2010): n. pag. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Yields, correlation shapes, and mean transverse momenta p T of charged particles associated with intermediate-to high-p T trigger particles (2.5 < p T < 10 GeV/c) in d + Au and Au + Au collisions at √ s NN = 200 GeV are presented. For associated particles at higher p T 2.5 GeV/c, narrow correlation peaks are seen in d + Au and Au + Au, indicating that the main production mechanism is jet fragmentation. At lower associated particle p T < 2 GeV/c, a large enhancement of the near-(φ ∼ 0) and away-side (φ ∼ π) associated yields is found, together with a strong broadening of the away-side azimuthal distributions in Au + Au collisions compared to d + Au measurements, suggesting that other particle production mechanisms play a role. This is further supported by the observed significant softening of the away-side associated particle yield distribution at φ ∼ π in central Au + Au collisions.
منابع مشابه
Azimuthal di-hadron correlations in d plus Au and Au plus Au collisions at root s(NN)=200 GeV measured at the STAR detector
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