Deuteron and Antideuteron Production in Au + Au Collisions at √sNN = 200 GeV

Physical Review Letters 94 巻 12 号 122302-1-122302-6 頁 2005-04-01 発行
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タイトル ( eng )
Deuteron and Antideuteron Production in Au + Au Collisions at √sNN = 200 GeV
作成者
PHENIX Collaboration
Enokizono Akitomo
Hachiya Takashi
Kohama Takeshi
Nakamura Tomoaki
収録物名
Physical Review Letters
94
12
開始ページ 122302-1
終了ページ 122302-6
抄録
The production of deuterons and antideuterons in the transverse momentum range 1.1 < pT < 4.3 GeV/c at midrapidity in Au + Au collisions at √SNN = 200 GeV has been studied by the PHENIX experiment at RHIC. A coalescence analysis, comparing the deuteron and antideuteron spectra with that of proton and antiproton, has been performed. The coalescence probability is equal for both deuterons and antideuterons and it increases as a function of PT, which is consistent with an expanding collision zone. Comparing (anti)proton yields, p̅/p = 0.73 ± 0.01, with (anti)deuteron yields, d̅/d = 0.47 ± 0.03, we estimate that n̅/n = 0.64 ± 0.04. The nucleon phase space density is estimated from the coalescence measurement.
著者キーワード
heavy ion-nucleus reactions
deuterons
言語
英語
資源タイプ 学術雑誌論文
出版者
American Physical Society
発行日 2005-04-01
権利情報
Copyright (c) 2005 The American Physical Society.
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.94.122302
[NCID] AA00773679
[DOI] http://dx.doi.org/10.1103/PhysRevLett.94.122302