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Production of $$pi^0$$ and $$eta$$ mesons in U$$+$$U collisions at $$sqrt{s_{_{NN}}}=192$$ GeV

$$sqrt{s_{_{NN}}}=192$$GeVでのウラン-ウラン衝突における$$pi^0$$および$$eta$$中間子の生成

Acharya, U.*; 長谷川 勝一   ; 今井 憲一*; 永宮 正治*; 佐甲 博之   ; 佐藤 進  ; 谷田 聖   ; PHENIX Collaboration*; 他397名*

Acharya, U.*; Hasegawa, Shoichi; Imai, Kenichi*; Nagamiya, Shoji*; Sako, Hiroyuki; Sato, Susumu; Tanida, Kiyoshi; PHENIX Collaboration*; 397 of others*

The PHENIX experiment at the Relativistic Heavy Ion Collider measured $$pi^0$$ and $$eta$$ mesons at midrapidity in U$$+$$U collisions at $$sqrt{s_{_{NN}}}=192$$ GeV in a wide transverse momentum range. Measurements were performed in the $$pi^0(eta)rightarrowgammagamma$$ decay modes. A strong suppression of $$pi^0$$ and $$eta$$ meson production at high transverse momentum was observed in central U$$+$$U collisions relative to binary scaled $$p$$$$+$$$$p$$ results. Yields of $$pi^0$$ and $$eta$$ mesons measured in U$$+$$U collisions show similar suppression pattern to the ones measured in Au$$+$$Au collisions at $$sqrt{s_{_{NN}}}=200$$ GeV for similar numbers of participant nucleons. The $$eta$$/$$pi^0$$ ratios do not show dependence on centrality or transverse momentum, and are consistent with previously measured values in hadron-hadron, hadron-nucleus, nucleus-nucleus, and $$e^+e^-$$ collisions.

使用言語

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English

掲載資料名

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Physical Review C

巻

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102

号

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6

ページ数

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p.064905_1 - 064905_13

発行年月

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2020/12

発表会議名

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開催年月

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開催都市

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開催国

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キーワード

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相対論的重イオン衝突

特許データ

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PDF

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論文URL

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https://doi.org/10.1103/PhysRevC.102.064905

研究データの公開先DOI

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使用施設

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広報プレスリリース

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論文解説記事
(成果普及情報誌)

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受委託・共同研究相手機関

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Brookhaven National Laboratory

Access

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- Accesses

InCites™

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パーセンタイル：52.72

分野：Physics, Nuclear

Altmetrics

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