Abstract
Open heavy-flavor hadrons provide unique probes of the medium produced in ultrarelativistic heavy-ion collisions. Due to their increased mass relative to light-flavor hadrons, long lifetime, and early production in hard-scattering interactions, they provide access to the full evolution of the partonic medium formed in heavy-ion collisions. This paper reports two-dimensional (2D) angular correlations between neutral D mesons and unidentified charged particles produced in minimum-bias Au+Au collisions at sNN=200GeV. D0 and D¯0 mesons are reconstructed via their weak decay to Kπ± using the Heavy Flavor Tracker in the Solenoidal Tracker at RHIC experiment. Correlations on relative pseudorapidity and azimuth (Δη,Δφ) are presented for peripheral, midcentral, and central collisions with D0 transverse momentum from 2-10GeV/c. Attention is focused on the 2D peaked correlation structure near the triggered D0 meson, the near-side (NS) peak, which serves as a proxy for a charm-quark-containing jet. The correlated NS yield of charged particles per D0 meson and the 2D widths of the NS peak increase significantly from peripheral to central collisions. These results are compared with similar correlations using unidentified charged particles, consisting primarily of light-flavor hadrons, at similar trigger particle momenta. Similar per-trigger yields and widths of the NS correlation peak are observed. The present results provide additional evidence that D0 mesons undergo significant interactions with the medium formed in heavy-ion collision and show, for the first time, significant centrality evolution of the NS 2D peak in the correlations of particles associated with a heavy-flavor hadron produced in these collisions.
Original language | English |
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Article number | 014905 |
Journal | Physical Review C |
Volume | 102 |
Issue number | 1 |
DOIs | |
State | Published - Jul 2020 |
Bibliographical note
Publisher Copyright:© 2020 American Physical Society.
Funding
We thank the RHIC Operations Group and RCF at BNL, the NERSC Center at LBNL, 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. National Science Foundation, the Ministry of Education and Science of the Russian Federation, National Natural Science Foundation of China, Chinese Academy of Science, the Ministry of Science and Technology of China and the Chinese Ministry of Education, the National Research Foundation of Korea, Czech Science Foundation and Ministry of Education, Youth and Sports of the Czech Republic, Hungarian National Research, Development and Innovation Office, New National Excellency Programme of the Hungarian Ministry of Human Capacities, Department of Atomic Energy and Department of Science and Technology of the Government of India, the National Science Centre of Poland, the Ministry of Science, Education and Sports of the Republic of Croatia, RosAtom of Russia and German Bundesministerium fur Bildung, Wissenschaft, Forschung and Technologie (BMBF) and the Helmholtz Association.
Funders | Funder number |
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Hungarian Ministry of Human Capacities | |
National Research Foundation of Korea | |
Max Delbrück Center for Molecular Medicine in the Helmholtz Association | |
Ministry of Education of the People's Republic of China | |
Narodowe Centrum Nauki | |
Grantová Agentura České Republiky | |
National Science Foundation Arctic Social Science Program | |
Bundesministerium für Bildung und Forschung | |
Nemzeti Kutatási Fejlesztési és Innovációs Hivatal | |
Ministry for Education and Science of the Russian Federation | |
RosAtom of Russia and German Bundesministerium fur Bildung, Wissenschaft, Forschung and Technologie | |
Ministry of Science and Technology of the People's Republic of China | |
Department of Atomic Energy and Department of Science and Technology | |
Ministarstvo Obrazovanja, Znanosti i Sporta | |
Chinese Academy of Sciences | |
Office of Science Programs | |
Institute for Nuclear Physics | |
Ministerstvo Školství, Mládeže a Tělovýchovy | |
National Natural Science Foundation of China (NSFC) | |
Japan Society for the Promotion of Science | 19H05598 |
Japan Society for the Promotion of Science |
ASJC Scopus subject areas
- Nuclear and High Energy Physics