2025/06/02 by Pierre Nzabahimana, Nzabahimana, Pierre, Paweł Danielewicz +3 · 2 citations
Engineering · Materials Science · Mathematics · #Catalytic Processes in Materials Science #FOS: Physical sciences #Gas Dynamics and Kinetic Theory #Nuclear Theory (nucl-th) #Vehicle emissions and performance
paper · pdf · doi:10.48550/arxiv.2506.01271
openalex publication_date 2025/06/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Two-particle correlations play a pivotal role in understanding the space-time characteristics of particle emission in Heavy-ion collisions. These characteristics are typically represented by a relative emission source and can be obtained using transport model simulations such as the Boltzmann- Uehling-Uhlenbeck (BUU) transport model. In this paper, we utilize the BUU transport model to simulate the p-p source. Subsequently, we integrate this source and the p-p kernel within the KP formula to calculate the correlations. By comparing the correlations obtained from the BUU simulation with those obtained using imaging methods, such as the deblurring method, we aim to gain a deeper understanding of the impact of fast and slow emissions on the measured correlations. Specifically, this comparison is used as a tool to determine a function (tail) that represents the relative distribution of the particle pair from secondary decay emissions. Thus, we correct the BUU source function by incorporating a tail to account for the contribution of secondary decay emissions, which cannot be accurately captured by BUU simulations. Resulting source function reproduces the features in the measured correlations. To illustrate our approach, we examine p-p correlations measured in Ar + Sc reactions at E/A = 80 MeV, considering both momentum-independent and momentum-dependent nuclear equations of state (EOS).