TY  - JOUR
AU  - Tolos, L.
AU  - Cabrera, D.
AU  - Garcia-Recio, C.
AU  - Molina, R.
AU  - Nieves, J.
AU  - Oset, E.
AU  - Ramos, A.
AU  - Romanets, O.
AU  - Salcedo, L. L.
PY  - 2013
DA  - 2013//
TI  - Strangeness and charm in nuclear matter
T2  - Nucl. Phys. A
JO  - Nuclear Physics A
SP  - 461
EP  - 471
VL  - 914
PB  - Elsevier Science Bv
KW  - Strange mesons
KW  - Transparency ratio
KW  - Dynamically-generated baryon resonances
KW  - Open charm in matter
KW  - D-mesic nuclei
AB  - The properties of strange (K, (K) over bar and (K) over bar*) and open-charm (D, (D) over bar and D*) mesons in dense matter are studied using a unitary approach in coupled channels for meson-baryon scattering. In the strangeness sector, the interaction with nucleons always comes through vector-meson exchange, which is evaluated by chiral and hidden gauge Lagrangians. For the interaction of charmed mesons with nucleons we extend the SU(3) Weinberg-Tomozawa Lagrangian to incorporate spin-flavor symmetry and implement a suitable flavor symmetry breaking. The in-medium solution for the scattering amplitude accounts for Pauli blocking effects and meson self-energies. On one hand, we obtain the K, (K) over bar and (K) over bar* spectral functions in the nuclear medium and study their behaviour at finite density, temperature and momentum. We also make an estimate of the transparency ratio of the gamma A -> K+ K*(-) A' reaction, which we propose as a tool to detect in-medium modifications of the (K) over bar* meson. On the other hand, in the charm sector, several resonances with negative parity are generated dynamically by the s-wave interaction between pseudoscalar and vector meson multiplets with 1/2(+) and 3/2(+) baryons. The properties of these states in matter are analyzed and their influence on the open-charm meson spectral functions is studied. We finally discuss the possible formation of D-mesic nuclei at FAIR energies.
SN  - 0375-9474
UR  - http://arxiv.org/abs/1211.7286
UR  - https://doi.org/10.1016/j.nuclphysa.2013.01.018
DO  - 10.1016/j.nuclphysa.2013.01.018
LA  - English
N1  - WOS:000324847700066
ID  - Tolos_etal2013
ER  -