Beam-energy dependence of the directed flow of deuterons in collisions
J Adam, L Adamczyk, JR Adams, JK Adkins… - Physical Review C, 2020 - APS
J Adam, L Adamczyk, JR Adams, JK Adkins, G Agakishiev, MM Aggarwal, Z Ahammed…
Physical Review C, 2020•APSWe present a measurement of the first-order azimuthal anisotropy v 1 of deuterons from Au+
Au collisions at s NN= 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 v 1
(y) slope, dv 1/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 v 1 (y) slopes
of protons are generally negative for s NN> 10 GeV, those for deuterons are consistent with …
Au collisions at s NN= 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 v 1
(y) slope, dv 1/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 v 1 (y) slopes
of protons are generally negative for s NN> 10 GeV, those for deuterons are consistent with …
We present a measurement of the first-order azimuthal anisotropy of deuterons from collisions at , 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 slope, , for deuterons, where is the rapidity, is extracted for semicentral collisions (10%–40% centrality) and compared with that of protons. While the slopes of protons are generally negative for , those for deuterons are consistent with zero, a strong enhancement of the slope of deuterons is seen at the lowest collision energy (the largest baryon density) at . In addition, we report the transverse momentum dependence of for protons and deuterons. The experimental results are compared with transport and coalescence models.
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