- Main
Beam-energy dependence of the directed flow of deuterons in Au+Au collisions
- Author(s): Adam, J
- Adamczyk, L
- Adams, JR
- Adkins, JK
- Agakishiev, G
- Aggarwal, MM
- Ahammed, Z
- Alekseev, I
- Anderson, DM
- Aparin, A
- Aschenauer, EC
- Ashraf, MU
- Atetalla, FG
- Attri, A
- Averichev, GS
- Bairathi, V
- Barish, K
- Behera, A
- Bellwied, R
- Bhasin, A
- Bielcik, J
- Bielcikova, J
- Bland, LC
- Bordyuzhin, IG
- Brandenburg, JD
- Brandin, AV
- Butterworth, J
- Caines, H
- De La Barca Sánchez, M
- Cebra, D
- Chakaberia, I
- Chaloupka, P
- Chan, BK
- Chang, FH
- Chang, Z
- Chankova-Bunzarova, N
- Chatterjee, A
- Chen, D
- Chen, JH
- Chen, X
- Chen, Z
- Cheng, J
- Cherney, M
- Chevalier, M
- Choudhury, S
- Christie, W
- Chu, X
- Crawford, HJ
- Csanád, M
- Daugherity, M
- Dedovich, TG
- Deppner, IM
- Derevschikov, AA
- Didenko, L
- Dong, X
- Drachenberg, JL
- Dunlop, JC
- Edmonds, T
- Elsey, N
- Engelage, J
- Eppley, G
- Esumi, S
- Evdokimov, O
- Ewigleben, A
- Eyser, O
- Fatemi, R
- Fazio, S
- Federic, P
- Fedorisin, J
- Feng, CJ
- Feng, Y
- Filip, P
- Finch, E
- Fisyak, Y
- Francisco, A
- Fulek, L
- Gagliardi, CA
- Galatyuk, T
- Geurts, F
- Gibson, A
- Gopal, K
- Grosnick, D
- Guryn, W
- Hamad, AI
- Hamed, A
- Harabasz, S
- Harris, JW
- He, S
- He, W
- He, XH
- Heppelmann, S
- Heppelmann, S
- Herrmann, N
- Hoffman, E
- Holub, L
- Hong, Y
- Horvat, S
- Hu, Y
- Huang, HZ
- Huang, SL
- et al.
Published Web Location
https://doi.org/10.1103/PhysRevC.102.044906Abstract
© 2020 American Physical Society. We present a measurement of the first-order azimuthal anisotropy v1 of deuterons from Au+Au collisions at sNN=7.7, 11.5, 14.5, 19.6, 27, and 39 GeV recorded with the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). The energy dependence of the v1(y) slope, dv1/dy|y=0, for deuterons, where y is the rapidity, is extracted for semicentral collisions (10%-40% centrality) and compared with that of protons. While the v1(y) slopes of protons are generally negative for sNN>10GeV, those for deuterons are consistent with zero, a strong enhancement of the v1(y) slope of deuterons is seen at the lowest collision energy (the largest baryon density) at sNN=7.7GeV. In addition, we report the transverse momentum dependence of v1 for protons and deuterons. The experimental results are compared with transport and coalescence models.