Signature of the $\alpha$-clustering structure of Light Nuclei in Relativistic Nuclear Collisions

Abstract

The "imaging-by-smashing" technique has been developed recently in relativistic nuclear collisions. By smashing heavy nuclei at RHIC and the LHC and analyzing the anisotropic expansion (flow) of the final state produced particles, unique information on the structure of the collided nuclei has been obtained. Existing efforts primarily focus on the colliding mode of heavy nuclei collisions. In contrast, nuclear structure studies with collisions of light nuclei and the fixed target mode, despite their significant impact and broad interest, have not been thoroughly explored. In this Letter, we investigate the $\alpha$-clustering signature of ${}^{20}$Ne and ${}^{16}$O in the fixed-target ${}^{208}$Pb--${}^{20}$Ne and ${}^{208}$Pb--${}^{16}$O collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}$ = 68.5 GeV, using the parton transport model AMPT. The results of two- and four-particle cumulants of anisotropic flow demonstrate a robust $\alpha$-clustering signature that persists regardless of the complex dynamic evolution of the created systems. This study highlights the significant impact of the LHCb SMOG (SMOG2) project in discovering the $\alpha$-clustering signature of light nuclei at relativistic energies.

7 pages, 3 figures

References in corpus (17)

• Elliptic flow in the Gaussian model of eccentricity fluctuations
• The ALICE experiment: a journey through QCD
• Imaging Shapes of Atomic Nuclei in High-Energy Nuclear Collisions
• Viscous Effects on the Mapping of the Initial to Final State in Heavy Ion Collisions
• Probing triaxial deformation of atomic nuclei in high-energy heavy ion collisions
• Evidence of the triaxial structure of ${}^{129}$Xe at the Large Hadron Collider
• Progress in the Glauber model at collider energies
• Evidence of Hexadecapole Deformation in Uranium-238 at the Relativistic Heavy Ion Collider
• Separating the impact of nuclear skin and nuclear deformation in high-energy isobar collisions
• Correlations between flow and transverse momentum in Xe+Xe and Pb+Pb collisions at the LHC with the ATLAS detector: a probe of the heavy-ion initial state and nuclear deformation
• System size dependence of elliptic flows in relativistic heavy-ion collisions
• Probing the nuclear deformation with three-particle asymmetric cumulant in RHIC isobar runs
• Impact of nuclear deformation on collective flow observables in relativistic U+U collisions
• Precision tests of the nonlinear mode coupling of anisotropic flow via high-energy collisions of isobars
• Exploring the Nuclear Shape Phase Transition in Ultra-Relativistic ${}^{129}$Xe+${}^{129}$Xe Collisions at the LHC
• Probe nuclear structure using the anisotropic flow at the Large Hadron Collider
• Investigations on mixed harmonic cumulants in heavy-ion collisions at the LHC

Cited by in corpus (2)

• Probing Nuclear Geometry through Multi-Particle Azimuthal Correlations and Rapidity-Even Dipolar Flow in ${}^{16}$O+${}^{16}$O Collisions
• A comparison study of collisions at relativistic energies involving light nuclei