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The microscopic description of heavy-ion reactions at low beam energies is achieved within hadronic transport approaches. In this article a new approach SMASH (Simulating Many Accelerated Strongly-interacting Hadrons) is introduced and…

Microscopic transport approaches are the tool to describe the non-equilibrium evolution in low energy collisions as well as in the late dilute stages of high-energy collisions. Here, a newly developed hadronic transport approach, SMASH…

Nuclear Theory · Physics 2019-02-20 Hannah Petersen , Dmytro Oliinychenko , Markus Mayer , Jan Staudenmaier , Sangwook Ryu

Noncentral heavy-ion collisions create fireballs with large initial orbital angular momentum that is expected to induce strong vorticity in the hot bulk fluid and generate global spin polarization of the produced particles. As the collision…

Nuclear Theory · Physics 2026-02-09 Alex Akridge , Daniel Gallimore , Hector Morales , Jinfeng Liao

This mini-review summarizes the general setup and some highlight results from the hadronic transport approach SMASH (Simulating Many Accelerated Strongly-interacting Hadrons). We start by laying out the software development structures as…

Nuclear Theory · Physics 2025-09-01 Hannah Elfner , Renan Góes-Hirayama

In this article we present an overview of the SMASH hadronic transport approach that is applied for non-equilibrium dynamics of hadrons in \heavyion\ collisions. We will give an overview about the ingredients of the approach and the…

Nuclear Theory · Physics 2025-01-07 A. Sciarra , H. Elfner

Possible correlations of the global polarization of $\Lambda$ hyperons with the angular momentum and transverse flow in the central region of colliding nuclei are studied based on refined estimate of the global polarization. Simulations of…

Nuclear Theory · Physics 2020-08-31 Yu. B. Ivanov , A. A. Soldatov

Heavy-ion collisions at varying collision energies provide access to different regions of the QCD phase diagram. In particular collisions at intermediate energies are promising candidates to experimentally identify the postulated first…

High Energy Physics - Phenomenology · Physics 2023-01-24 Anna Schäfer , Iurii Karpenko , Xiang-Yu Wu , Jan Hammelmann , Hannah Elfner

Since its discovery, global polarization of the $\Lambda$ hyperon in heavy-ion collisions has been firmly established and is widely attributed to the large vorticity generated in the rotating quark-gluon plasma. In contrast, nearly fifty…

High Energy Physics - Phenomenology · Physics 2026-03-23 Feng Liu , Zhoudunming Tu

Large orbital angular momentum can be generated in non-central heavy-ion collisions, and part of it is expected to be converted into final particle's polarization due to the spin-orbit coupling. Within the framework of A Multi-Phase…

Nuclear Theory · Physics 2017-12-08 Xiao-Liang Xia , Hui Li , Qun Wang

In non-central heavy-ion collisions, a large orbital angular momentum of the colliding system is produced, which is then partially transferred to the created medium, resulting in the particle polarization on average along the initial…

Nuclear Experiment · Physics 2024-10-30 Takafumi Niida

To assess the degree of equilibration of the matter created in heavy-ion reactions at low to intermediate beam energies, a hadronic transport approach (SMASH) is employed. By using a coarse-graining method, we compute the energy momentum…

High Energy Physics - Phenomenology · Physics 2022-09-12 Gabriele Inghirami , Hannah Elfner

Significant global polarization of $\Lambda$ hyperons along the direction of the orbital angular momentum has been measured in non-central heavy-ion collisions where the equation of state (EOS) of the produced dense matter is expected to…

Nuclear Theory · Physics 2026-03-31 Cong Yi , Shi Pu , Long-Gang Pang , Guang-You Qin , Xin-Nian Wang

Production of strange hadrons in elementary and heavy-ion reactions is studied with the hadronic transport approach SMASH (Simulating Many Accelerated Strongly-interacting Hadrons). The poorly known branching ratios of the relevant hadronic…

Nuclear Theory · Physics 2019-07-03 V. Steinberg , J. Staudenmaier , D. Oliinychenko , F. Li , Ö. Erkiner , H. Elfner

The suppression of high momentum particles in heavy-ion collisions in comparison to elementary reactions is one of the main indications for the formation of a quark-gluon plasma. In recent studies, full jets are being reconstructed and…

Nuclear Theory · Physics 2020-03-25 Philipp Dorau , Jean-Bernard Rose , Daniel Pablos , Hannah Elfner

The effects of angular momentum conservation in peripheral heavy ion collisions at very high energy are investigated. It is shown that the initial angular momentum of the quark-gluon plasma should enhance the azimuthal anisotropy of…

Nuclear Theory · Physics 2008-11-26 F. Becattini , F. Piccinini , J. Rizzo

In this work, the production of photons through binary scattering processes is investigated for equilibrated hadronic systems. More precisely, a non-equilibrium hadronic transport approach to describe relativistic heavy-ion collisions is…

In non-central high energy heavy ion collisions, the colliding system possesses a huge orbital angular momentum along the normal direction of the reaction plane. Due to the spin orbit interaction in the system, such a huge orbital angular…

Nuclear Theory · Physics 2023-01-18 Zuo-tang Liang

The global spin alignment of vector mesons has been observed by the STAR collaboration at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory (BNL). It provides a unique opportunity to probe the correlation between…

High Energy Physics - Phenomenology · Physics 2025-02-27 Jin-Hui Chen , Zuo-Tang Liang , Yu-Gang Ma , Xin-Li Sheng , Qun Wang

Collective flow observables are known to be a sensitive tool to gain insights on the equation of state of nuclear matter from heavy-ion collision observations. Towards more quantitative constraints one has to carefully assess other…

Nuclear Theory · Physics 2020-12-22 Justin Mohs , Martha Ege , Hannah Elfner , Markus Mayer

The STAR Collaboration has reported a significant $\phi$-meson global spin alignment ($\rho_{00}$) signal in Au+Au collisions at $\sqrt{s_{NN}}\leq62$ GeV by measuring the polar angle distribution of $\phi$-meson daughters with respect to…

Nuclear Experiment · Physics 2025-10-23 Gavin Wilks , Xu Sun , Zhenyu Ye
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