Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2005-10-03
Phys.Lett.B633:43-48,2006
Physics
Nuclear Physics
Nuclear Theory
11 pages, 3 figures
Scientific paper
10.1016/j.physletb.2005.11.046
We study the spectral distributions of charmed meson with $J^P=0^-$ quantum numbers in cold nuclear matter applying a self-consistent and covariant many-body approach established previously for the nuclear dynamics of kaons. At leading orders the computation requires as input the free-space two-body scattering amplitudes only. Our results are based on the s-wave meson-nucleon amplitudes obtained recently in terms of a coupled-channel approach. The amplitudes are characterized by the presence of many resonances in part so far not observed. This gives rise to an intriguing dynamics of charmed mesons in nuclear matter. At nuclear saturation density we predict a pronounced two-mode structure of the $D^+$ mesons with a main branch pushed up by about 32 MeV. The lower branch reflects the coupling to two resonance-hole states that are almost degenerate. For the $D^-$ we obtain a single mode pushed up by about 18 MeV relative to the vacuum mode. Most spectacular are the results for the $D^+_s$ meson. The presence of an exotic resonance-hole state gives rise to a rather broad and strongly momentum dependent spectral distribution.
Korpa C. L.
Lutz Matthias F. M.
No associations
LandOfFree
Open-charm systems in cold nuclear matter does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Open-charm systems in cold nuclear matter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Open-charm systems in cold nuclear matter will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-134348