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Study of Baryon Number Transport Dynamics and Strangeness Conservation Effects Using
Ω
\Omega
Ω
-hadron Correlations
Authors
Weijie Dong
Huan Zhong Huang
+5Â more
Zi-Wei Lin
Siyuan Ping
Gang Wang
Xiatong Wu
Xiaozhou Yu
Publication date
26 June 2023
Publisher
View
on
arXiv
Abstract
In nuclear collisions at RHIC energies, an excess of
Ω
\Omega
Ω
hyperons over
Ω
‾
\overline{\Omega}
Ω
is observed, indicating that
Ω
\Omega
Ω
carries a net baryon number despite
s
s
s
and
s
ˉ
\bar{s}
s
ˉ
quarks being produced in pairs. The baryon number in
Ω
\Omega
Ω
could have been transported from the incident nuclei and/or acquired and balanced in baryon pair productions associated with other types of anti-hyperons, such as
Ξ
‾
\overline{\Xi}
Ξ
. To investigate these two scenarios, we propose to measure correlations between
Ω
\Omega
Ω
and
K
K
K
, as well as between
Ω
\Omega
Ω
and anti-hyperons. We will use two versions, the default and string-melting, of a multiphase transport (AMPT) model to illustrate the correlation method. We will present the
Ω
\Omega
Ω
-hadron correlations from simulated Au+Au collisions at
s
N
N
=
7.7
\sqrt{s_{NN}} = 7.7
s
NN
​
​
=
7.7
and 14.6 GeV, and discuss the dependence on collision energy and on the hadronization scheme in these two AMPT versions. These correlations from the AMPT model provide a baseline for experimental exploration of the dynamics of baryon number transport and the effects of baryon number and strangeness conservation in nuclear collisions
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oai:arXiv.org:2306.15160
Last time updated on 02/07/2023