| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2023-03-18 |
| タイトル |
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タイトル |
High transverse momentum η meson production in p+p, d+Au, and Au+Au collisions at √sNN = 200 GeV |
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言語 |
en |
| 作成者 |
PHENIX Collaboration
Enokizono, Akitomo
Hachiya, Takashi
Homma, Kensuke
Kohama, Takeshi
Kohara, Ryota
Nakamura, Tomoaki
Shigaki, Kenta
Sugitate, Toru
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| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
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権利情報 |
Copyright (c) 2007 The American Physical Society. |
| 内容記述 |
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内容記述 |
Inclusive transverse momentum spectra of η mesons in the range pT≈2-12 GeV/c have been measured at midrapidity (|η|<0.35) by the PHENIX experiment at RHIC in p+p,d+Au, and Au+Au collisions at √sNN=200 GeV. The η mesons are reconstructed through their η→γγ channel for the three colliding systems as well as through the η→π0π+π- decay mode in p+p and d+Au collisions. The nuclear modification factor in d+Au collisions, RdAu(pT)≈1.0-1.1, suggests at most only modest pT broadening ("Cronin enhancement"). In central Au+Au reactions, the η yields are significantly suppressed, with RAuAu(pT)≈0.2. The ratio of η to π0 yields is approximately constant as a function of pT for the three colliding systems in agreement with the high-pT world average of Rη/π0≈0.5 in hadron-hadron, hadron-nucleus, and nucleus-nucleus collisions for a wide range of center-of-mass energies (√sNN≈3-1800 GeV) as well as, for high scaled momentum xp, in e+e- annihilations at √s=91.2 GeV. These results are consistent with a scenario where high-pT η production in nuclear collisions at the Relativistic Heavy Ion Collider is largely unaffected by initial-state effects but where light-quark mesons (π0,η) are equally suppressed due to final-state interactions of the parent partons in the dense medium produced in Au+Au reactions. |
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言語 |
en |
| 出版者 |
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出版者 |
American Physical Society |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 出版タイプ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 関連情報 |
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識別子タイプ |
DOI |
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関連識別子 |
10.1103/PhysRevC.75.024909 |
| 関連情報 |
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識別子タイプ |
DOI |
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関連識別子 |
http://dx.doi.org/10.1103/PhysRevC.75.024909 |
| 収録物識別子 |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
0556-2813 |
| 収録物識別子 |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA00773613 |
| 開始ページ |
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開始ページ |
024909-1 |
| 書誌情報 |
Physical Review C - Nuclear Physics
Physical Review C - Nuclear Physics
巻 75,
号 2,
p. 024909-1-024909-36,
発行日 2007-02-27
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| 旧ID |
19500 |
PhysRevC_75_024909.pdf (1.2 MB)
