D^- mesic atoms

Details D^- mesic atoms D^- mesic atoms

2011-11-28

arxiv.org/abs/1111.6535v1

Phys.Rev. C85 (2012) 025203

Physics

Nuclear Physics

Nuclear Theory

22 pages, 4 figures, 5 tables

Scientific paper

10.1103/PhysRevC.85.025203

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.

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