このエントリーをはてなブックマークに追加
ID 45820
file
creator
PHENIX Collaboration
Haruna, K.
Horaguchi, T.
Kijima, K. M.
Nakamiya, Y.
Nakamura, T.
Ouchida, M.
Torii, H.
Tsuchimoto, Y.
Watanabe, D.
Yamaura, K.
NDC
Physics
abstract
Measurements of electrons from the decay of open-heavy-flavor mesons have shown that the yields are suppressed in Au+Au collisions compared to expectations from binary-scaled p+p collisions. These measurements indicate that charm and bottom quarks interact with the hot dense matter produced in heavy-ion collisions much more than expected. Here we extend these studies to two-particle correlations where one particle is an electron from the decay of a heavy-flavor meson and the other is a charged hadron from either the decay of the heavy meson or from jet fragmentation. These measurements provide more detailed information about the interactions between heavy quarks and the matter, such as whether the modification of the away-side-jet shape seen in hadron-hadron correlations is presentwhen the trigger particle is from heavy-meson decay andwhether the overall level of away-side-jet suppression is consistent. We statistically subtract correlations of electrons arising from background sources from the inclusive electron-hadron correlations and obtain two-particle azimuthal correlations at √ sNN = 200 GeV between electrons from heavy-flavor decay with charged hadrons in p+p and also first results in Au+Au collisions. We find the away-side-jet shape and yield to be modified in Au+Au collisions compared to p+p collisions.
journal title
Physical Review C
volume
Volume 83
issue
Issue 4
start page
044912-1
end page
044912-16
date of issued
2011-04-26
publisher
American Physical Society
issn
0556-2813
2469-9985
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 2011 American Physical Society
department
Graduate School of Science