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Collective flow and the fluid behavior in p/d/
3
^3
3
He+Au collisions at
s
N
N
=
200
\sqrt{s_{NN}} = 200
s
NN
β
β
=
200
GeV
Authors
Baochi Fu
Runsheng Liu
+3Β more
Huichao Song
Zeming Wu
Shujun Zhao
Publication date
6 July 2023
Publisher
View
on
arXiv
Abstract
By varying the intrinsic initial geometry, the p/d/
3
^3
3
He+Au collisions at the Relativistic Heavy Ion Collider (RHIC) provide a unique opportunity to understand the collective behavior in the small systems. In this paper, we employ the hybrid model iEBE-VISHNU with TRENTO initial conditions to study the collective flow and the fluid behavior in p/d/
3
^3
3
He+Au collisions. With fine-tuned parameters, iEBE-VISHNU can describe the
v
2
(
p
T
)
v_2(p_T)
v
2
β
(
p
T
β
)
and
v
3
(
p
T
)
v_3(p_T)
v
3
β
(
p
T
β
)
data from the PHENIX and STAR collaborations. However, for these parameter sets tuned to fit the STAR data, the hydrodynamic simulations have already beyond their limits with the average Knudsen number
β¨
K
n
β©
\langle K_n \rangle
β¨
K
n
β
β©
obviously larger than one. Our calculations demonstrate that, for a meaningful evaluation of the fluid behavior in the small systems, model simulations should also pay attention to the validity range of hydrodynamics
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oai:arXiv.org:2307.02995
Last time updated on 08/07/2023