期刊
PHYSICAL REVIEW C
卷 88, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.88.024906
关键词
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资金
- Office of Nuclear Physics in the Office of Science of the Department of Energy (USA)
- National Science Foundation (USA)
- Abilene Christian University Research Council (USA)
- Research Foundation of SUNY (USA)
- Ministry of Education, Culture, Sports, Science, and Technology (Japan)
- Japan Society for the Promotion of Science (Japan)
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (Brazil)
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (Brazil)
- Natural Science Foundation of China (People's Republic of China)
- Ministry of Education, Youth and Sports (Czech Republic)
- Centre National de la Recherche Scientifique (France)
- Commissariat a l'Energie Atomique (France)
- Institut National de Physique Nucleaire et de Physique des Particules (France)
- Bundesministerium fur Bildung und Forschung (Germany)
- Deutscher Akademischer Austausch Dienst (Germany)
- Alexander von Humboldt Stiftung (Germany)
- Hungarian National Science Fund, OTKA(Hungary)
- Department of Atomic Energy (India)
- Department of Science and Technology (India)
- Israel Science Foundation (Israel)
- National Research Foundation (Korea)
- WCU program of the Ministry Education Science and Technology (Korea)
- Ministry of Education and Science (Russia)
- Russian Academy of Sciences (Russia)
- Federal Agency of Atomic Energy (Russia)
- VR (Sweden)
- Wallenberg Foundation (Sweden)
- US Civilian Research and Development Foundation for the Independent States of the Former Soviet Union
- US-Hungarian Fulbright Foundation for Educational Exchange
- US-Israel Binational Science Foundation
- Direct For Mathematical & Physical Scien
- Division Of Physics [1205671] Funding Source: National Science Foundation
- Grants-in-Aid for Scientific Research [23340074, 25105504] Funding Source: KAKEN
The transverse momentum (p(T)) spectra and ratios of identified charged hadrons (pi(+/-), K-+/-, p, (p) over bar) produced in root s(NN) = 200 GeV Au + Au and d + Au collisions are reported in five different centrality classes for each collision species. The measurements of pions and protons are reported up to p(T) = 6 GeV/c (5 GeV/c), and the measurements of kaons are reported up to p(T) = 4 GeV/c (3.5 GeV/c) in Au + Au (d + Au) collisions. In the intermediate p(T) region, between 2 and 5 GeV/c, a significant enhancement of baryon-to-meson ratios compared to those measured in p + p collisions is observed. This enhancement is present in both Au + Au and d + Au collisions and increases as the collisions become more central. We compare a class of peripheral Au + Au collisions with a class of central d + Au collisions which have a comparable number of participating nucleons and binary nucleon-nucleon collisions. The p(T)-dependent particle ratios for these classes display a remarkable similarity, which is then discussed.
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