Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김용균 | - |
dc.date.accessioned | 2017-11-09T05:09:54Z | - |
dc.date.available | 2017-11-09T05:09:54Z | - |
dc.date.issued | 2016-01 | - |
dc.identifier.citation | PHYSICAL REVIEW D, v. 93, NO 1, Article number 011501, Page. 1-8 | en_US |
dc.identifier.issn | 1550-7998 | - |
dc.identifier.issn | 1550-2368 | - |
dc.identifier.uri | https://journals.aps.org/prd/abstract/10.1103/PhysRevD.93.011501 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11754/30602 | - |
dc.description.abstract | PHENIX measurements are presented for the cross section and double-helicity asymmetry (A(LL)) in inclusive pi(0) production at midrapidity from p + p collisions at root s = 510 GeV from data taken in 2012 and 2013 at the Relativistic Heavy Ion Collider. The next-to-leading-order perturbative-quantum-chromodynamics theory calculation is in excellent agreement with the presented cross section results. The calculation utilized parton-to-pion fragmentation functions from the recent DSS14 global analysis, which prefer a smaller gluon-to-pion fragmentation function. The pi(0)A(LL) results follow an increasingly positive asymmetry trend with p(T) and root s with respect to the predictions and are in excellent agreement with the latest global analysis results. This analysis incorporated earlier results on pi(0) and jet A(LL) and suggested a positive contribution of gluon polarization to the spin of the proton Delta G for the gluon momentum fraction range x ˃ 0.05. The data presented here extend to a currently unexplored region, down to x similar to 0.01, and thus provide additional constraints on the value of Delta G. | en_US |
dc.description.sponsorship | We thank the staff of the Collider-Accelerator and Physics Departments at Brookhaven National Laboratory and the staff of the other PHENIX participating institutions for their vital contributions. We also thank M. Stratmann for providing the theoretical calculations and for informative discussions, and E. Nocera, E. Leader and D. B. Stamenov for information regarding their polarized-parton-distribution functions. We acknowledge support from the Office of Nuclear Physics in the Office of Science of the Department of Energy, the National Science Foundation, Abilene Christian University Research Council, Research Foundation of SUNY, and Dean of the College of Arts and Sciences, Vanderbilt University (U.S.A), the Ministry of Education, Culture, Sports, Science, and Technology and the Japan Society for the Promotion of Science (Japan), the Conselho Nacional de Desenvolvimento Cientifico e Tecnologico and Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (Brazil), the Natural Science Foundation of China (P. R. China), Croatian Science Foundation and Ministry of Science, Education, and Sports (Croatia), the Ministry of Education, Youth and Sports (Czech Republic), the Centre National de la Recherche Scientifique, Commissariat a l'Energie Atomique and Institut National de Physique Nucleaire et de Physique des Particules (France), the Bundesministerium fur Bildung und Forschung, Deutscher Akademischer Austausch Dienst, and Alexander von Humboldt Stiftung (Germany), the National Science Fund, OTKA, Karoly Robert University College and the Ch. Simonyi Fund (Hungary), the Department of Atomic Energy and Department of Science and Technology (India), the Israel Science Foundation (Israel), the Basic Science Research Program through NRF of the Ministry of Education (Korea), the Physics Department, Lahore University of Management Sciences (Pakistan), the Ministry of Education and Science, Russian Academy of Sciences, Federal Agency of Atomic Energy (Russia), the VR and Wallenberg Foundation (Sweden), the U.S. Civilian Research and Development Foundation for the Independent States of the Former Soviet Union, the Hungarian American Enterprise Scholarship Fund, and the US-Israel Binational Science Foundation. | en_US |
dc.language.iso | en | en_US |
dc.publisher | AMER PHYSICAL SOC | en_US |
dc.subject | DEEP-INELASTIC-SCATTERING | en_US |
dc.subject | PARTON DISTRIBUTIONS | en_US |
dc.title | Inclusive cross section and double-helicity asymmetry for pi(0) production at midrapidity in p plus p collisions at root s=510 GeV | en_US |
dc.type | Article | en_US |
dc.relation.no | 1 | - |
dc.relation.volume | 93 | - |
dc.identifier.doi | 10.1103/PhysRevD.93.011501 | - |
dc.relation.page | 1-8 | - |
dc.relation.journal | PHYSICAL REVIEW D | - |
dc.contributor.googleauthor | Adare, A. | - |
dc.contributor.googleauthor | Aidala, C. | - |
dc.contributor.googleauthor | Ajitanand, N. N. | - |
dc.contributor.googleauthor | Akiba, Y. | - |
dc.contributor.googleauthor | Akimoto, R. | - |
dc.contributor.googleauthor | Alexander, J. | - |
dc.contributor.googleauthor | Alfred, M. | - |
dc.contributor.googleauthor | Aoki, K. | - |
dc.contributor.googleauthor | Apadula, N. | - |
dc.contributor.googleauthor | Kim, Y. K. | - |
dc.relation.code | 2016002893 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF ENGINEERING[S] | - |
dc.sector.department | DEPARTMENT OF NUCLEAR ENGINEERING | - |
dc.identifier.pid | ykkim4 | - |
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