1997/10/20 by A. Sibirtsev, W. Cassing, G. I. Lykasov +3 · 25 citations
Physics and Astronomy · #Antiproton #Channel (broadcasting) #High-Energy Particle Collisions Research #Nuclear matter #Nuclear physics research studies #Pion #Production (economics) #Quantum Chromodynamics and Particle Interactions #Subthreshold conduction #Work (physics) #nucl-th
paper · pdf · doi:10.1016/s0375-9474(97)00809-9
published in Nuclear Physics A 632(1), 131-152 (Elsevier BV) · 25 pages, latex, including 15 ps-figures, UGI-97-21, submitted to Nucl. Phys. A
arxiv created 1997/10/20 · openalex publication_date 1998/03/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We reanalyse the production of pp pairs in proton-nucleus and nucleus-nucleus collisions employing novel elementary cross sections for baryon-baryon and pion-baryon production channels based on a boson-exchange model. In contrast to previous transport studies performed in the literature the secondary pion induced channel is found to be most important in both p+A and A+A collisions at subthreshold energies. A detailed comparison with the experimental data available indicates that sizeable attractive p potentials in the order of - 100 to - 150 MeV at normal nuclear matter density are needed to reproduce the size and shape of the experimental spectra.