Abstract
The search for specific signals in ultrarelativistic heavy-light ion collisions addressing intrinsic geometric features of nuclei may open a new window to low energy nuclear structure. We discuss specifically the phenomenon of α-clustering in 12C when colliding with 208Pb at almost the speed of light.
Highlights
Even before the neutron was discovered, based on the α decay explained successfully as a quantum tunneling effect across the Coulomb barrier, Gamow proposed that alpha particles (4He nuclei) are the constituents of atomic nuclei [1]
Because of the initial deformation, harmonic flow develops, leading to very specific and measurable signatures in the transverse momentum distributions of the detected hadrons produced in the collision
The harmonic flow consequences, elliptic and triangular flow have been analyzed in detail in Ref. [13, 49], where it is shown that the intrinsic deformation results in very characteristic behavior of the ratios of the so called cumulant moments as functions of the number of participant nucleons, both for the elliptic and triangular deformations
Summary
Even before the neutron was discovered, based on the α decay explained successfully as a quantum tunneling effect across the Coulomb barrier, Gamow proposed that alpha particles (4He nuclei) are the constituents of atomic nuclei [1]. That certain very distinct geometric features, such as the α-clustering in the nuclear ground state wave function, could be traced significantly by properly analyzing the multiparticle spectrum in the final state [12, 13] This talk returns to this remarkable link between the lowest energy nuclear structure and the highest-energy heavy-light-ions collisions, emphasizing some important aspects of this connection, mostly from the nuclear physics point of view. Where σNineNl (s) and σAinBel(s) are the inelastic cross sections for NN and AB, respectively, and d2bPNN (s, b) = d2bPAB(s, b) = 1 This formula shows that we need a knowledge of the nuclear wave functions and the interaction between nucleons in the different nuclei. Right: Normalized charge (full line) and baryon (dashed line) density for the α particle as functions of the radial distance
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