| 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 |
Production of φ mesons at midrapidity in √sNN = 200 GeV Au+Au collisions at relativistic energies |
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言語 |
en |
| 作成者 |
PHENIX Collaboration
Enokizono, Akitomo
Hachiya, Takashi
Homma, Kensuke
Kohama, Takeshi
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) 2005 The American Physical Society. |
| 内容記述 |
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|
内容記述 |
We present the results of φ meson production in the K+K- decay channel from Au+Au collisions at √sNN=200 GeV as measured at midrapidity by the PHENIX detector at Brookhaven National Laboratory's Relativistic Heavy Ion Collider. Precision resonance centroid and width values are extracted as a function of collision centrality. No significant variation from the Particle Data Group accepted values is observed, contrary to some model predictions. The φ transverse mass spectra are fitted with a linear exponential function for which the derived inverse slope parameter is seen to be constant as a function of centrality. However, when these data are fitted by a hydrodynamic model the result is that the centrality-dependent freeze-out temperature and the expansion velocity values are consistent with the values previously derived from fitting identified charged hadron data. As a function of transverse momentum the collisions scaled peripheral-to-central yield ratio RCP for the φ is comparable to that of pions rather than that of protons. This result lends support to theoretical models that distinguish between baryons and mesons instead of particle mass for explaining the anomalous (anti) proton yield. |
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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.72.014903 |
| 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.72.014903 |
| 収録物識別子 |
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収録物識別子タイプ |
ISSN |
|
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 |
|
収録物識別子 |
AA00773613 |
| 開始ページ |
|
|
開始ページ |
014903-1 |
| 書誌情報 |
Physical Review C - Nuclear Physics
Physical Review C - Nuclear Physics
巻 72,
号 1,
p. 014903-1-014903-23,
発行日 2005-06-14
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| 旧ID |
19496 |
PhysRevC_72_014903.pdf (779.3 KB)
