Nuclear Modification of Electron Spectra and Implications for Heavy Quark Energy Loss in Au + Au Collisions at √sNN = 200 GeV
Physical Review Letters 96 巻 3 号
032301-1-032301-6 頁
2006-01-26 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Nuclear Modification of Electron Spectra and Implications for Heavy Quark Energy Loss in Au + Au Collisions at √sNN = 200 GeV
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| 作成者 |
PHENIX Collaboration
Enokizono Akitomo
Hachiya Takashi
Kohama Takeshi
Nakamura Tomoaki
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| 収録物名 |
Physical Review Letters
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| 巻 | 96 |
| 号 | 3 |
| 開始ページ | 032301-1 |
| 終了ページ | 032301-6 |
| 抄録 |
The PHENIX experiment has measured midrapidity (|η|<0.35) transverse momentum spectra (0.4<pT<5.0GeV/c) of electrons as a function of centrality in Au+Au collisions at sNN=200GeV. Contributions from photon conversions and from light hadron decays, mainly Dalitz decays of π0 and η mesons, were removed. The resulting nonphotonic electron spectra are primarily due to the semileptonic decays of hadrons carrying heavy quarks. Nuclear modification factors were determined by comparison to nonphotonic electrons in p+p collisions. A significant suppression of electrons at high pT is observed in central Au+Au collisions, indicating substantial energy loss of heavy quarks.
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| 著者キーワード |
heavy ion-nucleus reactions
electron production
meson decay
semileptonic decays
nuclei with mass number 190 to 219
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
American Physical Society
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| 発行日 | 2006-01-26 |
| 権利情報 |
Copyright (c) 2006 The American Physical Society.
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| 出版タイプ | Version of Record（出版社版。早期公開を含む） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 0031-9007
[DOI] 10.1103/PhysRevLett.96.032301
[NCID] AA00773679
[DOI] http://dx.doi.org/10.1103/PhysRevLett.96.032301
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