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Jet-hadron correlations in sNN =200GeV p+p and central Au+Au collisions
Adamczyk, L Adkins, J Agakishiev, G Aggarwal, M Ahammed, Z Alekseev, I Alford, J Anson, C Aparin, A Arkhipkin, D
Adamczyk, L
Adkins, J
Agakishiev, G
Aggarwal, M
Ahammed, Z
Alekseev, I
Alford, J
Anson, C
Aparin, A
Arkhipkin, D
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Journal Article
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2014-12-01
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10.1103/PhysRevLett.112.122301
Abstract
Azimuthal angular correlations of charged hadrons with respect to the axis of a reconstructed (trigger) jet in Au+Au and p+p collisions at sNN=200GeV in STAR are presented. The trigger jet population in Au+Au collisions is biased toward jets that have not interacted with the medium, allowing easier matching of jet energies between Au+Au and p+p collisions while enhancing medium effects on the recoil jet. The associated hadron yield of the recoil jet is significantly suppressed at high transverse momentum (pTassoc) and enhanced at low pTassoc in 0%-20% central Au+Au collisions compared to p+p collisions, which is indicative of medium-induced parton energy loss in ultrarelativistic heavy-ion collisions. © 2014 American Physical Society.
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Physical Review Letters
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