Dynamical simulation of bound antiproton-nuclear systems and observable signals of cold nuclear compression

Abstract

On the basis of the kinetic equation with selfconsistent relativistic mean fields acting on baryons and antibaryons, we study dynamical response of the nucleus to an antiproton implanted in its interior. By solving numerically the time-dependent Vlasov equation, we show that the compressed state is formed on a rather short time scale of about 4-10 fm/c. This justifies the assumption, that the antiproton annihilation may happen in the compressed nuclear environment. The evolution of the nucleus after antiproton annihilation is described by the same kinetic equation including collision terms. We show, that nucleon kinetic energy spectra and the total invariant mass distributions of produced mesons are quite sensitive observables to the antiproton annihilation in the compressed nucleus.

26 pages, 2 tables, 12 figures; extended discussion, added references, new Fig. 4; version accepted in Phys. Rev. C

References in corpus (10)

• A New Parameterization for the Lagrangian Density of Relativistic Mean Field Theory
• In-medium nuclear interactions of low-energy hadrons
• Microscopic Calculation of in-Medium Nucleon-Nucleon Cross Ssections
• Strangeness Production in the HSD Transport Approach from SIS to SPS energies
• Antibaryons bound in nuclei
• Antiproton-nucleus potentials from global fits to antiprotonic X-rays and radiochemical data
• Analysis of Subthreshold Antiproton Production in p-Nucleus and Nucleus-Nucleus Collisions in the RBUU Approach
• Enhanced binding and cold compression of nuclei due to admixture of antibaryons
• Three-body collisions in Boltzmann-Uehling-Uhlenbeck theory
• Kaon and Pion production in relativistic heavy-ion collisions

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• Possibility of cold nuclear compression in antiproton-nucleus collisions
• Exploring the potential of antihyperons in nuclei with antiprotons
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• Nuclear collective dynamics within Vlasov approach
• Review of opportunities at the HESR-Collider with PANDA at FAIR
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• Cold compression of nuclei induced by antiprotons
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