J/ψ production at low transverse momentum in p+p and d + Au collisions at sNN =200 GeV

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18 Scopus citations

Abstract

We report on the measurement of J/ψ production in the dielectron channel at midrapidity (|y|<1) in p+p and d+Au collisions at sNN=200GeV from the STAR experiment at the Relativistic Heavy Ion Collider. The transverse momentum pT spectra in p+p for pT<4GeV/c and d+Au collisions for pT<3GeV/c are presented. These measurements extend the STAR coverage for J/ψ production in p+p collisions to low pT. The (pT2) from the measured J/ψ invariant cross section in p+p and d+Au collisions are evaluated and compared to similar measurements at other collision energies. The nuclear modification factor for J/ψ is extracted as a function of pT and collision centrality in d+Au and compared to model calculations using the modified nuclear parton distribution function and a final-state J/ψ nuclear absorption cross section.

Original languageEnglish
Article number064904
JournalPhysical Review C
Volume93
Issue number6
DOIs
StatePublished - Jun 10 2016

Bibliographical note

Publisher Copyright:
© 2016 American Physical Society.

Funding

We thank the RHIC Operations Group and RCF at BNL, the NERSC Center at LBNL, the KISTI Center in Korea, and the Open Science Grid consortium for providing resources and support. This work was supported in part by the Office of Nuclear Physics within the U.S. DOE Office of Science; the U.S. NSF; the Ministry of Education and Science of the Russian Federation; NSFC, CAS, MoST, and MoE of China; the National Research Foundation of Korea; NCKU (Taiwan); GA and MSMT of the Czech Republic; FIAS of Germany; DAE, DST, and UGC of India; the National Science Centre of Poland; National Research Foundation; the Ministry of Science, Education and Sports of the Republic of Croatia; and RosAtom of Russia.

FundersFunder number
KISTI Center in Korea
MoE of China
RHIC Operations Group
RosAtom of Russia
U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China1352081, 1206009, 1505716
U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China
National Science Foundation Office of International Science and Engineering
Horia Hulubei National Institute for Physics and Nuclear Engineering
National Research Foundation South African Research Chair
Department of Science and Technology, Ministry of Science and Technology, India
University Grants Commission
Government of India, Department of Atomic Energy
National Natural Science Foundation of China (NSFC)
Ministerstvo Školství, Mládeže a Tělovýchovy
Chinese Academy of Sciences
Ministarstvo Obrazovanja, Znanosti i Sporta
Ministry for Education and Science of the Russian Federation
National Research Foundation of Korea
Narodowe Centrum Nauki
Ministry of Science and Technology, Taiwan
National Cheng Kung University Hospital
Raincoast Conservation Foundation

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

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