Measurements of directed and elliptic flow for D-0 and <(D-0)over bar> mesons using the STAR detector at RHIC

0502302 - ÚJF 2020 RIV NL eng J - Článek v odborném periodiku
Singha, S. - Adam, J. - Adamczyk, L. - Adams, J. R. - Adkins, J. K. - Agakishiev, G. - Bielčík, J. - Bielčíková, Jana - Chaloupka, P. - Federič, Pavol - Harlenderová, A. - Holub, L. - Kocan, M. - Kosarzewski, L. K. - Kramárik, L. - Kvapil, J. - Lidrych, J. - Líčeník, R. - Matonoha, O. - Moravcová, Z. - Rusňák, Jan - Rusňáková, O. - Šimko, Miroslav - Šumbera, Michal - Vaněk, Jan … celkem 349 autorů
Measurements of directed and elliptic flow for D-0 and <(D-0)over bar> mesons using the STAR detector at RHIC.
Nuclear Physics. A. Roč. 982, č. 2 (2019), s. 671-674. ISSN 0375-9474. E-ISSN 1873-1554.
[27th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2018). Venice, 13.05.2018-19.05.2018]
Institucionální podpora: RVO:61389005
Klíčová slova: STAR * relativistic heavy ion collisions * heavy flavor * directed flow * elliptic flow
Obor OECD: Nuclear physics
Impakt faktor: 1.695, rok: 2019
Způsob publikování: Open access
https://doi.org/10.1016/j.nuclphysa.2018.09.010

We report on the first evidence for a non-zero rapidity-odd directed flow (nu(1)) for D-0 and (D-0) over bar mesons in 10-80% centrality Au+Au collisions at root S-NN = 200 GeV measured with the STAR detector at RHIC. The slope of the v1 rapidity dependence (d nu(1)/dy) averaged over D-0 and (D-0) over bar 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 D-0 mesons. Models indicate that the large d nu(1)/dy of D-0 mesons is sensitive to the initially tilted source. We also present a new measurement of the D-0 meson elliptic flow (v(2)) as a function of transverse momentum (P-T) in Au+Au collisions at root S-NN = 200 GeV with an improved precision with respect to the previously published results. The D-0 nu(2) results are compared to those of light-flavor hadrons to test the number-of-constituent-quark (NCQ) scaling. Both the nu(1) and nu(2) results are compared to recent hydrodynamic and transport model calculations.
Trvalý link: http://hdl.handle.net/11104/0294255