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arXiv · 1503.00625

Toward relativistic mean-field description of $\bar{\text{N}}$-nucleus reactions

T. Gaitanos·M. Kaskulov
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Abstract

In this work we study the antinucleon-nucleus optical potential in the framework of the non-linear derivative (NLD) model with momentum dependent mean-fields. We apply the NLD model to interaction of antinucleons ($\bar{\text{N}}$) in nuclear matter and, in particular, to antiproton scattering on nuclei. In nuclear matter a strong suppression of the $\bar{\text{N}}$-optical potential at rest and at high kinetic energies is found and caused by the momentum dependence of relativistic mean-fields. The NLD results are consistent with known empirical $\bar{\text{N}}$-nucleus observations and agree well with antiproton-nucleus scattering data. This makes the NLD approach compatible with both, nucleon and antinucleon Dirac phenomenologies. Furthermore, in nuclear matter an effective mass splitting between nucleons and antinucleons is predicted.

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T. Gaitanos, M. Kaskulov. 2015-04-21. Toward relativistic mean-field description of $\bar{\text{N}}$-nucleus reactions. https://doi.org/10.1016/j.nuclphysa.2015.04.006

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