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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…

Nuclear Theory · Physics 2025-07-25 Wen-Hao Zhou , Lu-Meng Liu , Che Ming Ko , Kai-Jia Sun , Jun Xu

Based on the Isospin-dependent transport model Boltzmann-Uehling-Uhlenbeck (IBUU), effects of the difference of the high momentum tails (HMTs) of nucleon momentum distribution in colliding nuclei on some isospin-sensitive observables are…

Nuclear Theory · Physics 2018-08-03 Zu-Xing Yang , Xiao-Hua Fan , Gao-Chan Yong , Wei Zuo

In this note, using the colour string model, we study the configuration space distribution of stopped nucleons in heavy-ion collisions. We find that the stopped nucleons from the target and the projectile end up separated from each other by…

High Energy Physics - Phenomenology · Physics 2018-02-27 Andrzej Bialas , Adam Bzdak , Volker Koch

I show that particle collider experiments on relativistic nuclear collisions can serve as direct probes of the deformation of the colliding nuclear species. I argue that collision events presenting very large multiplicities of particles and…

Nuclear Theory · Physics 2020-05-27 Giuliano Giacalone

Heavy-ion collisions provide a versatile terrestrial probe of the nuclear equation of state through the formation of nuclear matter at a wide variety of temperatures, densities, and pressures. Direct and indirect approaches for constraining…

Nuclear Experiment · Physics 2015-06-18 Z. Kohley , S. J. Yennello

Event-by-event mean transverse momentum fluctuations ($\langle p_\mathrm{T}\rangle$) serve as a sensitive probe of initial state overlap geometry and energy density fluctuations in relativistic heavy-ion collisions. We present a systematic…

Nuclear Theory · Physics 2025-02-14 Liuyao Zhang , Jinhui Chen , Chunjian Zhang

To describe ultrarelativistic heavy-ion collisions we construct a three-fluid hydrodynamical model. In contrast to one-fluid hydrodynamics, it accounts for the finite stopping power of nuclear matter, i.e. for nonequilibrium effects in the…

Nuclear Theory · Physics 2016-09-08 J. Brachmann , A. Dumitru , J. A. Maruhn , H. Stöcker , W. Greiner , D. H. Rischke

We found type I critical collapses of compact objects modeled by a polytropic equation of state (EOS) with polytropic index $\Gamma=2$ without the ultra-relativistic assumption. The object is formed in head-on collisions of neutron stars.…

General Relativity and Quantum Cosmology · Physics 2008-11-26 Ke-Jian Jin , Wai-Mo Suen

This paper presents a quantitative analysis of the impact of inelastic collisions with atoms in a crystalline environment on the channeling efficiency and intensity of the channeling radiation for high-energy electrons and positrons passing…

Accelerator Physics · Physics 2025-11-24 Andrei V. Korol , Andrey V. Solov'yov

Ion thruster is a revolution technology with potential applications in space mission but the thrusters operation lifetime is limited by the sputtering from thruster components. In this work, molecular dynamic simulations are performed to…

Materials Science · Physics 2022-09-28 Cheng Zhang , Jiang Zhou , Weihua Xie , Jiacong Yin , Hongjiao Zhao

The centrality dependence of pseudorapidity density of charged particles and transverse energy is studied for a wide range of collision energies for heavy-ion collisions at midrapidity from 7.7 GeV to 5.02 TeV. A two-component model…

High Energy Physics - Phenomenology · Physics 2016-10-20 Aditya Nath Mishra , Raghunath Sahoo , Pragati Sahoo , Pooja Pareek , Nirbhay K. Behera , Basanta K. Nandi

Based on the deformed nucleon distributions obtained from the constrained Skyrme-Hartree-Fock-Bogolyubov calculation using different nuclear symmetry energies, we have investigated the effects of the neutron skin and the collision geometry…

Nuclear Theory · Physics 2023-03-29 Lu-Meng Liu , Jun Xu , Guang-Xiong Peng

We present various order moments (Variance ($\sigma^2$), Skewness($S$), Kurtosis($\kappa$)) of net-proton multiplicity distributions in Au+Au collisions from the first phase of RHIC beam energy scan ({\sNN}=7.7$-$200 GeV). The measurements…

Nuclear Experiment · Physics 2019-08-13 Xiaofeng Luo

Cluster formation is a fundamental aspect of the equation of state (EOS) of warm and dense nuclear matter such as can be found in supernovae (SNe). Similar matter can be studied in heavy-ion collisions (HIC). We use the experimental data of…

Nuclear Theory · Physics 2015-05-05 Matthias Hempel , Kris Hagel , Joseph Natowitz , Gerd Röpke , Stefan Typel

We present the first systematic measurement of the tilt of the pion emission source in relativistic Au+Au collisions at center-of-mass energies per nucleon pair, $\sqrt{s_{NN}}$ = 7.7, 14.5, 17.3 and 27 GeV, using data from the STAR…

Nuclear Experiment · Physics 2026-05-15 STAR Collaboration

In high energy heavy-ion collisions, the two colliding nuclei pass through each other leaving behind an almost baryon free central rapidity region. Most of the baryons are carried away by the nuclear remnants and are located in the…

Nuclear Theory · Physics 2019-01-02 Ming Li , Chun Shen

One of the fundamental questions in the field of subatomic physics is what happens to matter at extreme densities and temperatures as may have existed in the first microseconds after the Big Bang and exists, perhaps, in the core of dense…

Nuclear Experiment · Physics 2011-06-16 Raimond Snellings

Quasifission, along with fusion-fission, represent the two most likely reaction outcomes to occur post-capture in collisions leading to superheavy nuclei. As such, understanding these mechanisms and how they relate to one another is key to…

Nuclear Theory · Physics 2025-03-26 Richard Gumbel , Kyle Godbey

We study current bounds on strong first-order phase transitions (PTs) along the equation of state (EOS) of dense strongly interacting matter in neutron stars, under the simplifying assumption that on either side of the PT the EOS can be…

High Energy Astrophysical Phenomena · Physics 2023-10-31 Tyler Gorda , Kai Hebeler , Aleksi Kurkela , Achim Schwenk , Aleksi Vuorinen

Atomic nuclei are self-organized, many-body quantum systems bound by strong nuclear forces within femtometer-scale space. These complex systems manifest a variety of shapes, traditionally explored using non-invasive spectroscopic techniques…

Nuclear Experiment · Physics 2024-11-19 STAR Collaboration