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Title: Measurements of directed and elliptic flow for D0 and D0 mesons using the STAR detector at RHIC

Abstract

We report on the first evidence for a non-zero rapidity-odd directed flow (v1) for D0 and D0 mesons in 10-80% centrality Au+Au collisions at psNN = 200 GeV measured with the STAR detector at RHIC. The slope of the v1 rapidity dependence (dv1/dy) averaged over D0 and D0 mesons is -0.081 ± 0.021 ± 0.017, while that of charged kaons is -0.0030 ± 0.0001 ± 0.0002, suggesting significantly larger slope for the D0 mesons. Models indicate that the large dv1/dy of D0 mesons is sensitive to the initially tilted source. We also present a new measurement of the D0 meson elliptic flow (v2) as a function of transverse momentum (pT ) in Au+Au collisions at psNN = 200 GeV with an improved precision with respect to the previously published results.The D0 v2 results are compared to those of light-flavor hadrons to test the number-of-constituent-quark (NCQ) scaling. Both the v1 and v2 results are compared to recent hydrodynamic and transport model calculations.

Authors:
;
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1501603
Report Number(s):
BNL-211380-2019-CPPJ
Journal ID: ISSN 0375-9474
DOE Contract Number:  
SC0012704
Resource Type:
Conference
Resource Relation:
Journal Volume: 982; Conference: 27th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter), Venice, Italy, 5/14/2018 - 5/19/2018
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Singha, Subhash, and Arkhipkin, Dmitry. Measurements of directed and elliptic flow for D0 and D0 mesons using the STAR detector at RHIC. United States: N. p., 2018. Web. doi:10.1016/j.nuclphysa.2018.09.010.
Singha, Subhash, & Arkhipkin, Dmitry. Measurements of directed and elliptic flow for D0 and D0 mesons using the STAR detector at RHIC. United States. doi:10.1016/j.nuclphysa.2018.09.010.
Singha, Subhash, and Arkhipkin, Dmitry. Mon . "Measurements of directed and elliptic flow for D0 and D0 mesons using the STAR detector at RHIC". United States. doi:10.1016/j.nuclphysa.2018.09.010. https://www.osti.gov/servlets/purl/1501603.
@article{osti_1501603,
title = {Measurements of directed and elliptic flow for D0 and D0 mesons using the STAR detector at RHIC},
author = {Singha, Subhash and Arkhipkin, Dmitry},
abstractNote = {We report on the first evidence for a non-zero rapidity-odd directed flow (v1) for D0 and D0 mesons in 10-80% centrality Au+Au collisions at psNN = 200 GeV measured with the STAR detector at RHIC. The slope of the v1 rapidity dependence (dv1/dy) averaged over D0 and D0 mesons is -0.081 ± 0.021 ± 0.017, while that of charged kaons is -0.0030 ± 0.0001 ± 0.0002, suggesting significantly larger slope for the D0 mesons. Models indicate that the large dv1/dy of D0 mesons is sensitive to the initially tilted source. We also present a new measurement of the D0 meson elliptic flow (v2) as a function of transverse momentum (pT ) in Au+Au collisions at psNN = 200 GeV with an improved precision with respect to the previously published results.The D0 v2 results are compared to those of light-flavor hadrons to test the number-of-constituent-quark (NCQ) scaling. Both the v1 and v2 results are compared to recent hydrodynamic and transport model calculations.},
doi = {10.1016/j.nuclphysa.2018.09.010},
journal = {},
issn = {0375-9474},
number = ,
volume = 982,
place = {United States},
year = {2018},
month = {5}
}

Conference:
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