English

Interaction of antiprotons with nuclei

Nuclear Theory 2015-12-16 v1

Abstract

We performed fully self-consistent calculations of pˉ\bar{p}-nuclear bound states using a complex pˉ{\bar p}-nucleus potential accounting for pˉ\bar{p}-atom data. While the real part of the potential is constructed within the relativistic mean-field (RMF) model, the pˉ\bar{p} annihilation in the nuclear medium is described by a phenomenological optical potential. We confirm large polarization effects of the nuclear core caused by the presence of the antiproton. The pˉ{\bar p} annihilation is treated dynamically, taking into account explicitly the reduced phase space for annihilation from deeply bound states as well as the compressed nuclear density due to the antiproton. The energy available for the products of pˉ{\bar p} annihilation in the nuclear medium is evaluated self-consistently, considering the additional energy shift due to transformation from the pˉN{\bar p}N system to pˉ{\bar p}-nucleus system. Corresponding pˉ\bar{p} widths in the medium are significantly suppressed, however, they still remain considerable for the pˉ\bar{p} potential consistent with experimental data.

Keywords

Cite

@article{arxiv.1510.07409,
  title  = {Interaction of antiprotons with nuclei},
  author = {J. Hrtánková and J. Mareš},
  journal= {arXiv preprint arXiv:1510.07409},
  year   = {2015}
}

Comments

preprint submitted to Nuclear Physics A