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The notion of the "size" of nucleons and their constituents plays a pivotal role in the current paradigm of the formation and the fluctuations of the quark-gluon plasma produced in high-energy nuclear collision experiments. We report on…

Nuclear Theory · Physics 2022-02-09 Giuliano Giacalone , Björn Schenke , Chun Shen

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

The observation of resonances is unequivocal evidence of new physics beyond the Standard Model at the Large Hadron Collider (LHC). So far, inclusive and model dependent searches have not provided evidence of new resonances, indicating that…

High Energy Physics - Experiment · Physics 2021-11-29 Salah-eddine Dahbi , Joshua Choma , Bruce Mellado , Gaogalalwe Mokgatitswane , Xifeng Ruan , Benjamin Lieberman , Turgay Celik

We will gain unprecedented, high-accuracy insights into the internal structure of the atomic nucleus thanks to lepton-hadron collision studies in the coming years at the Electron-Ion-Collider (EIC) in the United States. A good control of…

High Energy Physics - Phenomenology · Physics 2024-02-05 Laboni Manna , Anton Safronov , Carlo Flore , Daniel Kikola , Jean-Philippe Lansberg , Olivier Mattelaer

We propose a novel method for measuring the neutron skin of heavy nuclei using collider experiments. Specifically, we demonstrate that the neutron skin thickness of the lead nucleus can be extracted in $p$+$^{208}$Pb collisions by analyzing…

Nuclear Theory · Physics 2025-10-28 Grégoire Pihan , Akihiko Monnai , Björn Schenke , Chun Shen

We present a method to measure electric-charge transport in high-energy nuclear collisions using a beam-energy scan of isobaric systems. Comparing collisions of nuclei with identical mass number but different atomic number allows the charge…

Nuclear Experiment · Physics 2026-04-06 Wendi Lv , Niseem Magdy , Rongrong Ma , Zebo Tang , Prithwish Tribedy , Chun Yuen Tsang , Zhangbu Xu

We propose a novel statistical approach to the analysis of experimental data obtained in nucleus-nucleus collisions at high energies which borrows from methods developed within the context of Random Matrix Theory. It is applied to the…

Nuclear Experiment · Physics 2009-12-31 R. G. Nazmitdinov , E. I. Shahaliev , M. K. Suleymanov , S. Tomsovic

Centrality, as a geometrical property of the collision, is crucial for the physical interpretation of nucleus-nucleus and proton-nucleus experimental data. However, it cannot be directly accessed in event-by-event data analysis. Common…

Data Analysis, Statistics and Probability · Physics 2017-03-24 Igor Altsybeev , Vladimir Kovalenko

Recent results connected to nuclear collision dynamics, from low up to relativistic energies, are reviewed. Heavy ion reactions offer the unique opportunity to probe the complex nuclear many-body dynamics and to explore, in laboratory…

Nuclear Theory · Physics 2020-07-15 Maria Colonna

In this work, we propose a novel approach for probing the neutron skin thickness of gold (Au) by analyzing the event-by-event distribution of $\pi^{-}$ and $\pi^{+}$ yield differences. This is achieved through SMASH simulations of…

Nuclear Theory · Physics 2025-11-17 Xu-Hua Tian , Long-Gang Pang

This article presents a physics-informed deep learning method for the quantitative estimation of the spatial coordinates of gamma interactions within a monolithic scintillator, with a focus on Positron Emission Tomography (PET) imaging. A…

One of the key challenges for nuclear physics today is to understand from first principles the effective interaction between hadrons with different quark content. First successes have been achieved using techniques that solve the dynamics…

Nuclear Experiment · Physics 2020-12-18 ALICE Collaboration

It is well understood that subnuclear fluctuations in the initial state of heavy-ion collisions have an important impact on the creation of long-range correlations in the transverse plane. This is also true for the creation of particle…

Nuclear Theory · Physics 2025-10-23 Oscar Garcia-Montero , Sören Schlichting , Jie Zhu

We investigate the effect of nucleon-nucleon correlations on the initial condition of ultra-central heavy ion collisions at LHC energies. We calculate the eccentricities of the MC-Glauber and IP-Glasma models in the 0--1% centrality class…

Nuclear Theory · Physics 2014-07-01 G. S. Denicol , C. Gale , S. Jeon , J. -F. Paquet , B. Schenke

Cluster production plays an important role in heavy-ion collisions at intermediate beam energies, where light nuclei contribute substantially to final-state yields and to other observables that are used to infer the nuclear equation of…

Nuclear Theory · Physics 2026-05-13 Oleh Savchuk , Pawel Danielewicz , William Lynch , Jérôme Margueron

We employ the SMASH transport model to provide event-by-event initial conditions for the energy-momentum tensor and conserved charge currents in hydrodynamic simulations of relativistic heavy-ion collisions. We study the fluctuations and…

The influence of the underlying nucleon-nucleon collision geometry on evaluations of the nuclear overlap function ($T_{AB}$) and number of binary collisions ($N_{coll}$) is studied. A narrowing of the spatial distribution of the…

Nuclear Theory · Physics 2009-11-05 Jiangyong Jia

Clustering of the four-nucleon system at kinetic freezeout conditions is studied using path-integral Monte Carlo techniques. This method seeks to improve upon previous calculations which relied on approximate semiclassical methods or…

Nuclear Theory · Physics 2021-10-27 Dallas DeMartini , Edward Shuryak

The centrality dependence of pseudorapidity density of charged particles ($ dN_{ch}/d\eta $) in $Cu+Cu$ ($Au+Au$) collisions at RHIC energy of $ \sqrt{s_{_{\rm NN}}}=22.4$ , $62.4 $ and $200$ ($19.6$, $62.4$ and $200$) GeV, is investigated…

High Energy Physics - Phenomenology · Physics 2017-12-25 Khaled Abdel-Waged , Nuha Felemban

We present recent results for heavy-flavor observables in nucleus-nucleus collisions at LHC energies, obtained with the POWLANG transport setup. The initial creation of c-cbar and b-bbar pairs is simulated with a perturbative QCD approach…

High Energy Physics - Phenomenology · Physics 2015-09-15 M. Nardi , A. Beraudo , A. De Pace , M. Monteno , F. Prino