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A Multi-Phase Transport (AMPT) model is used to investigate the efficacy of several flow observables to constrain the initial-state deformation of the Uranium nuclei in U$+$U collisions at nucleon-nucleon center-of-mass energy…

核理论 · 物理学 2024-03-04 Niseem Magdy

Relativistic $^{238}$U+$^{238}$U collisions have recently been used to extract the quadrupole shape of $^{238}$U. In this study, we employ state-of-the-art three-dimensional (3D) lattice covariant density functional theory (CDFT) with…

核理论 · 物理学 2026-02-03 Yuan Li , Hao-jie Xu , Dandan Zhang , Guo-Liang Ma

We present a novel ``imaging-by-smashing" approach for probing nuclear deformation in high-energy heavy-ion collisions. By analyzing anisotropic-flow ($v_n$) and mean transverse momentum ($\left[p_T\right]$)-based observables in collisions…

核实验 · 物理学 2025-12-08 Chunjian Zhang

In the hydrodynamical description of heavy-ion collisions, the elliptic flow $\mathrm{v_{2}}$ and triangular flow $\mathrm{v_{3}}$ are sensitive to the quadrupole deformation $\mathrm{\beta_{2}}$ of the colliding nuclei. We produce…

高能物理 - 唯象学 · 物理学 2023-12-12 Saraswati Pandey , B. K. Singh

Preliminary data by the STAR collaboration at the BNL Relativistic Heavy Ion Collider shows that the elliptic flow, $v_2$, and the average transverse momentum, $\langle p_t \rangle$, of final-state hadrons produced in high-multiplicity…

核理论 · 物理学 2021-02-23 Giuliano Giacalone

In relativistic heavy-ion collisions, the radial flow of the fireball, usually characterized by transverse momentum spectra of final-state particles, encodes essential information about the hot and dense nuclear matter created in the…

核理论 · 物理学 2026-02-05 Jie Zhu , Xiang-Yu Wu , Guang-You Qin

In the hydrodynamic framework of heavy-ion collisions, elliptic flow, $v_2$, is sensitive to the quadrupole deformation, $\beta$, of the colliding ions. This enables one to test whether the established knowledge on the low-energy structure…

核理论 · 物理学 2022-01-04 Giuliano Giacalone , Jiangyong Jia , Chunjian Zhang

This work establishes a deep connection between two seemingly distant branches of nuclear physics: nuclear structure and relativistic heavy-ion collisions. At the heart of this connection is the recent discovery made at particle colliders…

核理论 · 物理学 2021-01-05 Giuliano Giacalone

The hexadecapole deformation ($\beta_4$) of the $^{238}$U nucleus has not been determined because its effect is overwhelmed by those from the nucleus' large quadrupole deformation ($\beta_2$) in nuclear electric transition measurements. In…

核理论 · 物理学 2024-06-26 Hao-jie Xu , Jie Zhao , Fuqiang Wang

Most atomic nuclei are deformed with a quadrupole shape described by its overall strength $\beta_2$ and triaxiality $\gamma$. The deformation can be accessed in high-energy heavy-ion collisions by measuring the collective flow response of…

核理论 · 物理学 2022-05-04 Jiangyong Jia

There is strong evidence of the failure of hydrodynamic simulations of the quark-gluon plasma (QGP) to reproduce data on the elliptic flow of particles in relativistic collisions of $^{238}$U nuclei at the BNL Relativistic Heavy Ion…

核理论 · 物理学 2023-05-29 Wouter Ryssens , Giuliano Giacalone , Björn Schenke , Chun Shen

In heavy ion collisions, elliptic flow $v_2$ and radial flow, characterized by event-wise average transverse momentum $[p_{\mathrm{T}}]$, are related to the shape and size of the overlap region, which are sensitive to the shape of colliding…

核理论 · 物理学 2022-01-19 Jiangyong Jia , Shengli Huang , Chunjian Zhang

This study employs the isospin-dependent Boltzmann-Uehling-Uhlenbeck model to simulate intermediate-energy heavy-ion collisions between prolate nuclei $^{24}$Mg. The emphasis is on investigating the influence of centrality and orientation…

核理论 · 物理学 2023-09-12 Xiao-Hua Fan , Zu-Xing Yang , Peng-Hui Chen , Shunji Nishimura , Zhi-Pan Li

The nature of octupole deformation, whether static or vibrational, remains an open question in nuclear physics. Here, we propose a scaling approach to probe this ambiguity by triangular flow fluctuations using multi-particle cumulants,…

核理论 · 物理学 2025-09-12 Lumeng Liu , Chunjian Zhang , Jinhui Chen , Jiangyong Jia , Xu-Guang Huang , Yu-Gang Ma

To assess the properties of the quark-gluon plasma formed in nuclear collisions, the Pearson correlation coefficient between flow harmonics and mean transverse momentum, $\rho\left(v_{n}^{2},\left[p_{\mathrm{T}}\right]\right)$, reflecting…

核理论 · 物理学 2022-02-08 Chunjian Zhang , Jiangyong Jia , Shengli Huang

In the hydrodynamic model description of heavy ion collisions, the final-state anisotropic flow $v_n$ are linearly related to the strength of the multi-pole shape of the distribution of nucleons in the transverse plane $\varepsilon_n$,…

核理论 · 物理学 2022-01-19 Jiangyong Jia

Due to their weak coupling to the strongly interacting matter produced in relativistic heavy-ion collisions, dileptons serve as a sensitive probe of the initial geometry of the colliding nuclei. In this study, we investigate the influence…

核理论 · 物理学 2025-07-25 Wen-Hao Zhou , Lu-Meng Liu , Che Ming Ko , Kai-Jia Sun , Jun Xu

In this work, we perform a model-to-data comparison for U+U and Au+Au collisions performed at RHIC at $\sqrt{s_{\rm NN}}$ = $193$ GeV and $200$ GeV, using a multistage framework. Model calculations for various configurations of $^{238}$U…

核理论 · 物理学 2024-06-17 Nicolas Fortier , Sangyong Jeon , Charles Gale

Recent studies have shown that the shape and radial profile of the colliding nuclei have strong influences on the initial condition of the heavy ion collisions and the subsequent development of the anisotropic flow. Using A Multi-Phase…

核理论 · 物理学 2023-11-29 Zhiyong Lu , Mingrui Zhao , Jiangyong Jia , You Zhou

In relativistic heavy-ion collisions, the extractions of properties of quark-gluon plasma (QGP) are hindered by a limited understanding of its initial conditions, where the nuclear structure of the colliding ions play a significant role. In…

核实验 · 物理学 2024-09-17 Chunjian Zhang
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