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Running the gamut of high energy nuclear collisions
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abstract
We present calculations of bulk properties and multiparticle correlations in a large variety of collision systems within a hybrid formalism consisting of IP-Glasma initial conditions, MUSIC viscous relativistic hydrodynamics, and UrQMD microscopic hadronic transport. In particular, we study heavy ion collisions at the Large Hadron Collider (LHC), including Pb+Pb, Xe+Xe, and O+O collisions, and Au+Au, U+U, Ru+Ru, Zr+Zr, and O+O collisions at the Relativistic Heavy Ion Collider (RHIC). We further study asymmetric systems, including p+Au, d+Au, $^3$He+Au, and p+Pb collisions at various energies as well as p+p collisions at 0.5 and 13 TeV. We describe experimental observables in all heavy ion systems well with one fixed set of parameters, validating the energy and system dependence of the framework. Many observables in the smaller systems are also well described, although they test the limits of the model. Calculations of O+O collisions provide predictions for potential future runs at RHIC and LHC.
Forward citations
Cited by 17 Pith papers
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Rapidity-even directed flow splitting of protons and antiprotons as a probe of baryon stopping in relativistic heavy-ion collisions
The mid-rapidity curvature of Δv₁^even(p − p̄) is proposed as a robust discriminator of initial-state baryon rapidity profiles motivated by double-junction stopping.
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Hyperon ($\Lambda$) polarization along the beam axis in Pb-Pb collisions at $\sqrt{s_{\rm NN}} = 5.36$ TeV
First LHC measurement of beam-axis Lambda polarization relative to the third-order event plane, with improved precision on the second-order plane and sensitivity to QGP transport coefficients.
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Nonflow Subtraction Beyond Two-Particle Correlations
A nonflow subtraction framework for m-particle cumulants is developed and tested in HIJING simulations for O+O and d+Au collisions.
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Evidence of nuclear geometry-driven anisotropic flow in OO and Ne$-$Ne collisions at $\mathbf{\sqrt{{\textit s}_{\rm\mathbf {NN}}}}$ = 5.36 TeV
First measurements of elliptic and triangular flow in OO and Ne-Ne collisions show geometry-driven collectivity consistent with hydrodynamic predictions.
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Analytic and Approximate Solutions to Color Glass Condensate in the Classical Weak-Field Limit
In the weak-field CGC limit the glasma energy-momentum tensor has universal late-time scaling ε,PT∼1/τ and PL∼1/τ³, with closed Meijer-G forms in the MV model and controlled series in an improved Gaussian model.
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A Resummed Hydrodynamic Description of Relativistic Heavy-ion Collisions
A resummed hydrodynamic scheme with tunable caps on shear and bulk viscous stress is introduced; it reduces to standard second-order hydrodynamics for small stresses and is used to quantify flow-observable uncertainti...
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The polarization of thermal dileptons emitted in high-energy heavy-ion collisions
Thermal dilepton polarization in LHC heavy-ion collisions is sensitive to QGP in-medium properties, with a one-to-one mapping derived between dielectron and dimuon channels.
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Resolution-matched nuclear geometry and the nucleon-size ambiguity in relativistic heavy-ion collisions
The strong nucleon-width dependence of the Pb+Pb hadronic cross section is a geometric-inflation artifact; with the folded density fixed, σ_AA is width-insensitive and can constrain the 208Pb neutron skin to Δr_np ∈ [...
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Disentangling baryon stopping and neutron skin effects in heavy-ion collisions
Statistical model analysis of isobar collisions extracts a baryon-stopping parameter and introduces an r^OX observable whose central-to-peripheral ratio probes neutron-skin thickness.
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Scaling approach to rigid and soft nuclear deformation through flow fluctuations in high-energy nuclear collisions
Triangular flow four-particle cumulants scale linearly with the fourth moment of octupole deformation, allowing the mean and variance of 238U octupole deformation to be extracted separately.
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Extended applicability domain of viscous anisotropic hydrodynamics in (2+1)-D Bjorken flow with transverse expansion
VAH simulations in (2+1)D Bjorken flow with transverse expansion show an extended applicability domain over standard viscous hydrodynamics when compared to relaxation-time approximation kinetic theory.
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Towards a topological data analysis for heavy-ion collisions
Persistent homology Betti curves and persistence distributions for Trajectum Pb-Pb and O-O events are robust and reflect known flow and multiplicity phenomenology, with no enhanced parameter sensitivity over standard ...
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Mapping Sparse Triangular Solves to GPUs via Fine-grained Domain Decomposition
A domain-decomposition scheme sizes subdomains to GPU shared memory to remove synchronization from sparse triangular solves, reporting 10.7x and 3.2x speedups for triangular solves and ILU0-BiCGSTAB on the AMD MI210.
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Nuclear structure and saturation effects from diffractive vector meson production
Predictions for vector meson production in light-nucleus UPCs show t-differential observables sensitive to nuclear structure models and saturation suppression that grows with nuclear mass and collision energy.
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Few is different: deciphering many-body dynamics in mesoscopic quantum gases
A workshop report mapping the size, equilibrium, and interaction frontiers of hydrodynamic behavior in mesoscopic quantum systems, connecting few-atom Fermi gases and high-energy small collision systems.
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Perturbative high-energy evolution in the IP-Glasma initial state
JIMWLK evolution is added to IP-Glasma initial conditions, and the model is shown to capture the RHIC-to-LHC energy dependence of bulk observables.
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SMASH: Results from hadronic transport for heavy-ion collisions at high densities
A mini-review of the SMASH hadronic transport approach: setup, light-nucleus production, mean-field EoS constraints, electromagnetic probes, and hybrid hydrodynamics.
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