Abstract
J/ψ production in d+Au and p+p collisions at sNN=200GeV has been measured by the PHENIX experiment at rapidities -2.2<y<+2.4. The cross sections and nuclear dependence of J/ψ production versus rapidity, transverse momentum, and centrality are obtained and compared to lower energy p+A results and to theoretical models. The observed nuclear dependence in d+Au collisions is found to be modest, suggesting that the absorption in the final state is weak and the shadowing of the gluon distributions is small and consistent with Dokshitzer-Gribov-Lipatov-Altarelli-Parisi-based parametrizations that fit deep-inelastic scattering and Drell-Yan data at lower energies.
Original language | English |
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Article number | 012304 |
Journal | Physical review letters |
Volume | 96 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2006 Jan 13 |
Bibliographical note
Funding Information:This study was supported by the Center for Innovative Grouting Materials and Technology (CIGMAT) and the Texas Hurricane Cener for Innovative Technology (THC-IT) at the University of Houston, Texas. Funding for the project (Project No. 10121-4501-01) is provided through the "Ultra-Deepwater and Unconventional Natural Gas and Other Petroleum Resources Research and Development Program" authorized by the Energy Policy Act of 2005. This program-funded from lease bonuses and royalties paid by industry to produce oil and gas on federal lands-is designed to assess and mitigate risk enhancing the environmental sustainability of oil and gas exploration and production activities. RPSEA is under contract with the U.S. Department of Energy's National Energy Technology Laboratory to administer three areas of research. RPSEA is a 501(c)(3) nonprofit consortium with more than 180 members, including 24 of the nation's premier research universities, five national laboratories, other major research institutions, large and small energy producers and energy consumers. The mission of RPSEA, headquartered in Sugar Land, Texas, is to provide a stewardship role in ensuring the focused research, development and deployment of safe and environmentally responsible technology that can effectively deliver hydrocarbons from domestic resources to the citizens of the United States. Additional information can be found at www.rpsea.org.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)