Nzabahimana, Pierre and Danielewicz, Pawel and Verde, Giuseppe (2025) Source function from two-particle correlations through deblurring: p-p and d-α pairs. Il nuovo cimento C, 48 (1). pp. 1-9. ISSN 1826-9885
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Abstract
In the study of heavy-ioncollisions, two-particle correlation functions (CF) give insights into the space-time characteristics of nuclear systems. Typically, those characteristics are quantified with the so-called source function (SF) related to CF through the Koonin-Pratt (KP) convolution formula. Deducing SF from CF is, at the formal level, an imaging problem. Here, we use the Richardson-Lucy (RL) optical deblurring algorithm, employed elsewhere in imaging problems, to extract the SF from two-particle correlation function measurements. We apply the algorithm to the deuteron-alpha (d–α) and proton-proton (p-p) correlation data. In addition, we apply the Boltzmann-Uehling-Uhlenbeck (BUU) transport model to simulate the p-p source in heavy-ion collisions at low incident energies per nucleon (E/A). Comparing sources from BUU simulations with the RL algorithm results helps to understand the impact of fast and slow emissions on the sources. Consequently, we propose adding an analytically parametrized component to the BUU source to correct the missing secondary decay emissions in the model. In illustrating our approach, we rely on the p-p correlations measured in Ar + Sc reactions at E/A = 80 MeV.
| Item Type: | Article |
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| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 31 Mar 2025 13:42 |
| Last Modified: | 31 Mar 2025 13:42 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/23527 |
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