Measurement of D0 Azimuthal Anisotropy at Midrapidity in Au+Au Collisions at sNN =200 GeV
Genre
Pre-printDate
2017-05-26Author
Adamczyk, LAdkins, JK
Agakishiev, G
Aggarwal, MM
Ahammed, Z
Ajitanand, NN
Alekseev, I
Anderson, DM
Aoyama, R
Aparin, A
Arkhipkin, D
Aschenauer, EC
Ashraf, MU
Attri, A
Averichev, GS
Bai, X
Bairathi, V
Behera, A
Bellwied, R
Bhasin, A
Bhati, AK
Bhattarai, P
Bielcik, J
Bielcikova, J
Bland, LC
Bordyuzhin, IG
Bouchet, J
Brandenburg, JD
Brandin, AV
Brown, D
Bunzarov, I
Butterworth, J
Caines, H
Calderón De La Barca Sánchez, M
Campbell, JM
Cebra, D
Chakaberia, I
Chaloupka, P
Chang, Z
Chankova-Bunzarova, N
Chatterjee, A
Chattopadhyay, S
Chen, X
Chen, JH
Chen, X
Cheng, J
Cherney, M
Christie, W
Contin, G
Crawford, HJ
Das, S
De Silva, LC
Debbe, RR
Dedovich, TG
Deng, J
Derevschikov, AA
Didenko, L
Dilks, C
Dong, X
Drachenberg, JL
Draper, JE
Dunkelberger, LE
Dunlop, JC
Efimov, LG
Elsey, N
Engelage, J
Eppley, G
Esha, R
Esumi, S
Evdokimov, O
Ewigleben, J
Eyser, O
Fatemi, R
Fazio, S
Federic, P
Federicova, P
Fedorisin, J
Feng, Z
Filip, P
Finch, E
Fisyak, Y
Flores, CE
Fulek, L
Gagliardi, CA
Garand, D
Geurts, F
Gibson, A
Girard, M
Greiner, L
Grosnick, D
Gunarathne, DS
Guo, Y
Gupta, A
Gupta, S
Guryn, W
Hamad, AI
Hamed, A
Harlenderova, A
Harris, JW
He, L
Subject
STAR CollaborationPermanent link to this record
http://hdl.handle.net/20.500.12613/4893
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10.1103/PhysRevLett.118.212301Abstract
© 2017 American Physical Society. We report the first measurement of the elliptic anisotropy (v2) of the charm meson D0 at midrapidity (|y|<1) in Au+Au collisions at sNN=200 GeV. The measurement was conducted by the STAR experiment at RHIC utilizing a new high-resolution silicon tracker. The measured D0 v2 in 0%-80% centrality Au+Au collisions can be described by a viscous hydrodynamic calculation for a transverse momentum (pT) of less than 4 GeV/c. The D0 v2 as a function of transverse kinetic energy (mT-m0, where mT=pT2+m02) is consistent with that of light mesons in 10%-40% centrality Au+Au collisions. These results suggest that charm quarks have achieved local thermal equilibrium with the medium created in such collisions. Several theoretical models, with the temperature-dependent, dimensionless charm spatial diffusion coefficient (2πTDs) in the range of ∼2-12, are able to simultaneously reproduce our D0 v2 result and our previously published results for the D0 nuclear modification factor.Citation to related work
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http://dx.doi.org/10.34944/dspace/4875