تقرير
Testing the $\phi$-nuclear potential in pion-induced $\phi$ meson production on nuclei near threshold
| العنوان: | Testing the $\phi$-nuclear potential in pion-induced $\phi$ meson production on nuclei near threshold |
|---|---|
| المؤلفون: | Paryev, E. Ya. |
| المصدر: | Nucl.Phys.A 1032(2023)122624 |
| سنة النشر: | 2022 |
| المجموعة: | High Energy Physics - Experiment Nuclear Experiment Nuclear Theory |
| مصطلحات موضوعية: | Nuclear Experiment, High Energy Physics - Experiment, Nuclear Theory |
| الوصف: | The near-threshold pion-induced $\phi$ production off nuclei has been studied in the kinematical conditions of the HADES experiment using a collision model based on the nuclear spectral function. Starting from the elementary reaction ${\pi^-}p \to {\phi}n$, absolute differential and integral cross sections for the production of $\phi$ mesons off a light carbon and a heavy tungsten target have been calculated and compared to the recently reported experimental cross sections. The absolute cross section values are shown to be sensitive to the effective nuclear scalar $\phi$ and neutron potentials while the transparency ratio is governed by the ${\phi}N$ absorption cross section. The experimental data are found to be consistent with an attractive ${\phi}$-nucleus potential of $\approx$ -(50--100) MeV at normal nuclear matter density $\rho_0$ and an effective ${\phi}N$ absorption cross section of $\approx$ 12--25 mb. The extracted $\phi$-nucleus potential is deeper than previous theoretical and experimental findings as well as those obtained in the present work within the ($t{\rho}$) approximation with accounting for Pauli correlations from the spin-averaged $\phi$-$p$ scattering length reported in a recent ALICE experiment. Comment: 19 pages, 6 figures, references and some additional comments are added |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1016/j.nuclphysa.2023.122624 |
| URL الوصول: | http://arxiv.org/abs/2212.13778 |
| رقم الأكسشن: | edsarx.2212.13778 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1016/j.nuclphysa.2023.122624 |
|---|