2023/11/02 by A. K. Sahoo, Sahoo, Aswini Kumar, X. H. He +5
Materials Science · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Nuclear Experiment (nucl-ex) #Nuclear Materials and Properties #Nuclear Theory (nucl-th)
paper · pdf · doi:10.48550/arxiv.2311.00946
openalex publication_date 2023/11/02 · openalex created_date 2023/11/04 · openalex updated_date 2026/07/28
The Lanzhou Cooling-Storage-Ring facility is set to conduct experiments involving Uranium-Uranium collisions at the center of mass energies ranging from 2.12 to 2.4 GeV. Our investigation is focused on various bulk observables, which include charged particle multiplicity (Nch), average transverse momentum (⟨ pT⟩), initial eccentricity (εn), and flow harmonics (vn), for different orientations of U+U collisions within the range of 0∘ < θ< 120 ∘ at √s\mathrm NN = 2.12 GeV (p\mathrm lab = 500 MeV). Among the various collision configurations at this energy, the tip-tip scenario emerged with the highest average charged particle multiplicity, denoted as ⟨ Nch ⟩. Notably, both the second and third-order eccentricities, ε2,3, revealed intricate patterns as they varied with impact parameter across distinct configurations. The tip-tip configuration displayed the most pronounced magnitude of rapidity-odd directed flow (v1), whereas the body-body configuration exhibited the least pronounced magnitude. Concerning elliptic flow (v2) near mid-rapidity (η< 1.0), a negative sign is observed for all configurations except for the side-side exhibited a distinctly positive sign. Within the spectrum of configurations, the body-body scenario displayed the highest magnitude of v2. For reaction plane correlated triangular flow (v3), the body-body configuration emerged with the largest magnitude while the side-side exhibited the smallest magnitude. Our study seeks to establish a fundamental understanding of various U+U collision configurations in preparation for the forthcoming CEE experiment.