期刊
PHYSICAL REVIEW D
卷 101, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.101.052006
关键词
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资金
- Office of Nuclear Physics in the Office of Science of the Department of Energy (the United States of America)
- National Science Foundation (the United States of America)
- Abilene Christian University Research Council (the United States of America)
- Research Foundation of SUNY (the United States of America)
- College of Arts and Sciences, Vanderbilt University (the United States of America)
- 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)
- Croatian Science Foundation (Croatia)
- Ministry of Science and Education (Croatia)
- 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)
- J. Bolyai Research Scholarship (Hungary)
- NKFIH (Hungary)
- OTKA (Hungary)
- EFOP (Hungary)
- New National Excellence Program (UNKP) (Hungary)
- Department of Atomic Energy (India)
- Department of Science and Technology (India)
- Israel Science Foundation (Israel)
- Basic Science Research Program through NRF - Ministry of Education (Korea)
- SRC(CENuM) Program through NRF - Ministry of Education (Korea)
- Ministry of Science and ICT (Korea)
- Physics Department, Lahore University of Management Sciences (Pakistan)
- Ministry of Education and Science (Russia)
- Russian Academy of Sciences (Russia)
- Federal Agency of Atomic Energy (Russia)
- VR (Sweden)
- Wallenberg Foundation (Sweden)
- U.S. Civilian Research and Development Foundation for the Independent States of the Former Soviet Union
- Hungarian American Enterprise Scholarship Fund
- US-Hungarian Fulbright Foundation
- US-Israel Binational Science Foundation
The PHENIX experiment at the Relativistic Heavy Ion Collider has measured the differential cross section, mean transverse momentum, mean transverse momentum squared of inclusive J/psi, and cross section ratio of psi(2S) to J/psi at forward rapidity in p + p collisions at root s = 510 GeV via the dimuon decay channel. Comparison is made to inclusive J/psi cross sections measured at root s = 200 GeV and 2.76-13 TeV. The result is also compared to leading-order nonrelativistic QCD calculations coupled to a color-glass-condensate description of the low-x gluons in the proton at low transverse momentum (p(T)) and to next-to-leading order nonrelativistic QCD calculations for the rest of the p(T) range. These calculations overestimate the data at low p(T). While consistent with the data within uncertainties above approximate to 3 GeV/c, the calculations are systematically below the data. The total cross section times the branching ratio is BR d sigma(J/)(psi)(pp) / dy(1.2 < vertical bar y vertical bar < 2.2,0 < p(T) < 10 GeV/c) = 54.3 +/- 0.5(stat) +/- 5.5(syst) nb.
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