- Main
Elliptic flow of electrons from heavy-flavor hadron decays in Au + Au collisions at √sNN =200, 62.4, and 39 GeV
- Adamczyk, L;
- Adkins, 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;
- Grosnick, D;
- Gunarathne, DS;
- Guo, Y;
- Gupta, S;
- Gupta, A;
- Guryn, W;
- Hamad, AI;
- Hamed, A;
- Harlenderova, A;
- Harris, JW;
- He, L;
- Heppelmann, S
- et al.
Published Web Location
https://doi.org/10.1103/PhysRevC.95.034907Abstract
We present measurements of elliptic flow (v2) of electrons from the decays of heavy-flavor hadrons (eHF) by the STAR experiment. For Au+Au collisions at sNN=200 GeV we report v2, for transverse momentum (pT) between 0.2 and 7 GeV/c, using three methods: the event plane method (v2{EP}), two-particle correlations (v2{2}), and four-particle correlations (v2{4}). For Au+Au collisions at sNN=62.4 and 39 GeV we report v2{2} for pT<2GeV/c. v2{2} and v2{4} are nonzero at low and intermediate pT at 200 GeV, and v2{2} is consistent with zero at low pT at other energies. The v2{2} at the two lower beam energies is systematically lower than at sNN=200 GeV for pT<1GeV/c. This difference may suggest that charm quarks interact less strongly with the surrounding nuclear matter at those two lower energies compared to sNN=200 GeV.
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