2024/04/01 by Y. Bailung, N. Shah, Bailung, Yoshini +3
Physics and Astronomy · #Magnetic confinement fusion research #High-Energy Particle Collisions Research #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2404.01244
Recent measurements from ALICE report that ``in-jet'' nucleons carry a higher probability of forming a deuteron via coalescence than the nucleons from the underlying event (UE). This study makes use of an event shape classifier to separate the ``in-jet'' deuterons and the deuterons in the UE produced in high multiplicity proton-proton collisions at √(s) = 13 TeV. Event shape variables such as transverse spherocity allow the categorization of hard and soft components of an event, which can be divided into two respective classes; ``jetty'' and ``isotropic''. The ``jetty'' deuterons minus the contribution of the deuterons from the ``isotropic'' event are taken as ``in-jet'' deuterons, and the coalescence mechanism is tested. The coalescence is performed with a Wigner function formalism, augmented as an afterburner to pythia8. The possible enhancement of the coalescence probability of ``in-jet'' deuterons is investigated by calculating the coalescence parameter (B2) in different spherocity classes in high-multiplicity pp collisions.