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ID 45820
本文ファイル
著者
PHENIX Collaboration
Haruna, K.
Homma, Kensuke 大学院理学研究科 広大研究者総覧
Horaguchi, T.
Kijima, K. M.
Nakamiya, Y.
Nakamura, T.
Ouchida, M.
Shigaki, Kenta 大学院理学研究科 広大研究者総覧
Sugitate, Toru 大学院理学研究科 広大研究者総覧
Torii, H.
Tsuchimoto, Y.
Watanabe, D.
Yamaura, K.
NDC
物理学
抄録(英)
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.
掲載誌名
Physical Review C
83巻
4号
開始ページ
044912-1
終了ページ
044912-16
出版年月日
2011-04-26
出版者
American Physical Society
ISSN
0556-2813
2469-9985
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
Copyright (c) 2011 American Physical Society
部局名
理学研究科