Azimuthal correlations of electrons from heavy-flavor decay with hadrons in p+p and Au+Au collisions at √ sNN = 200 GeV
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ID | 45820 |
本文ファイル | |
著者 |
PHENIX Collaboration
Haruna, K.
Horaguchi, T.
Kijima, K. M.
Nakamiya, Y.
Nakamura, T.
Ouchida, M.
Torii, H.
Tsuchimoto, Y.
Watanabe, D.
Yamaura, K.
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NDC |
物理学
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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.
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掲載誌名 |
Physical Review C
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巻 | 83巻
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号 | 4号
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開始ページ | 044912-1
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終了ページ | 044912-16
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出版年月日 | 2011-04-26
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出版者 | American Physical Society
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ISSN | 0556-2813
2469-9985
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NCID | |
出版者DOI | |
言語 |
英語
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NII資源タイプ |
学術雑誌論文
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広大資料タイプ |
学術雑誌論文
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DCMIタイプ | text
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フォーマット | application/pdf
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著者版フラグ | publisher
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権利情報 | Copyright (c) 2011 American Physical Society
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部局名 |
理学研究科
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