2004/03/31 by V. K. Magas, L. Roca, E. Oset · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #nucl-th
paper · pdf · doi:10.1103/physrevc.71.065202
published as Phys.Rev. C71 (2005) 065202 · 26 pages, 13 figures. More detailed calculations have been performed. Paper is accepted for publication in Phys. Rev. C
arxiv created 2005/04/15 · openalex publication_date 2005/06/16 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04
We perform calculations for the production of \ensuremathφ mesons in nuclei at energies just above threshold and study the A dependence of the cross section. We use results for the \ensuremathφ self-energy in the medium obtained within a chiral unitary approach. We find a strong A dependence which is tied to the distortion of the incident proton and to the absorption of the \ensuremathφ on its way out of the nucleus. The effect of this latter process reduces the cross section by about a factor of 2 in heavy nuclei, proving that the A dependence of the cross section bears valuable information on the \ensuremathφ width in the nuclear medium. Calculations are done for energies accessible in an experimental facility like COSY.