https://doi.org/10.1140/epja/s10050-023-01038-z
Regular Article - Theoretical Physics
Investigating nonflow contribution subtraction in d-Au collisions with AMPT model
1
School of Physics and Mechanical Electrical and Engineering, Hubei University of Education, 430205, Wuhan, China
2
Institute of Theoretical Physics, Hubei University of Education, 430205, Wuhan, China
3
Key Laboratory of Quark and Lapten Physics (MOE), Central China Normal University, 430079, Wuhan, China
Received:
14
February
2023
Accepted:
24
May
2023
Published online:
13
June
2023
This paper presents research that focuses on nonflow contribution subtraction in heavy-ion collisions, using a multiphase transport model (AMPT). Specifically, the study aims to investigate the behavior of charged particle elliptic flow (
) in d-Au collisions at a collision energy of 
GeV and to determine the impact of nonflow sources, such as jet correlations and resonance decays, in small collision systems. To reduce nonflow effects, the per-trigger yield distribution in peripheral d-Au collisions or pp collisions with the same collision energy is subtracted. Our results show that the nonflow effects in central and mid-central collisions are not strongly dependent on subtracting the per-trigger yield distribution in peripheral d-Au collisions or pp collisions. Furthermore, the elliptic flow of charged particles, after removing nonflow effects through two subtracting methods from this work, exhibits consistency in various collision centrality classes. We also discuss comparisons with measurements from d-Au collisions at GeV. Overall, this work provides valuable insights and serves as a reference for researchers studying nonflow contribution subtraction in experiments with small collision systems.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
