D^- mesic atoms
Abstract
The anti-D meson self-energy is evaluated self-consistently, using unitarized coupled-channel theory, by computing the in-medium meson-baryon T-matrix in the C=-1,S=0 sector. The heavy pseudo-scalar and heavy vector mesons, anti-D and anti-D^*, are treated on equal footing as required by heavy quark spin symmetry. Results for energy levels and widths of D^- mesic atoms in 12C, 40Ca, 118Sn and 208Pb are presented. The spectrum contains states of atomic and of nuclear types for all nuclei. anti-D^0--nucleus bound states are also obtained. We find that, after electromagnetic and nuclear cascade, these systems end up with the anti-D bound in the nucleus, either as a meson or as part of a exotic anti-D N (pentaquark) loosely bound state.
Cite
@article{arxiv.1111.6535,
title = {D^- mesic atoms},
author = {C. Garcia-Recio and J. Nieves and L. L. Salcedo and L. Tolos},
journal= {arXiv preprint arXiv:1111.6535},
year = {2012}
}
Comments
22 pages, 4 figures, 5 tables