TY  - JOUR
AU  - Cabrera, D.
AU  - Hiller Blin, A. N.
AU  - Vicente Vacas, M. J.
PY  - 2017
DA  - 2017//
TI  - phi meson self-energy in nuclear matter from phi N resonant interactions
T2  - Phys. Rev. C
JO  - Physical Review C
SP  - 015201
EP  - 9pp
VL  - 95
IS  - 1
PB  - Amer Physical Soc
AB  - The phi-meson properties in cold nuclear matter are investigated by implementing resonant phi N interactions as described in effective approaches including the unitarization of scattering amplitudes. Several N*-like states are dynamically generated in these models around 2 GeV, in the vicinity of the phi N threshold. We find that both these states and the non-resonant part of the amplitude contribute sizably to the phi collisional self-energy at finite nuclear density. These contributions are of a similar strength as the widely studied medium effects from the KK cloud. Depending on model details (position of the resonances and strength of the coupling to phi N) we report a phi broadening up to about 40-50 MeV, to be added to the phi -> KK in-medium decay width, and an attractive optical potential at threshold up to about 35 MeV at normal matter density. The phi spectral function develops a double peak structure as a consequence of the mixing of resonance-hole modes with the phi quasiparticle peak. The former results point in the direction of making up for missing absorption as reported in phi nuclear production experiments.
SN  - 2469-9985
UR  - http://arxiv.org/abs/1609.03880
UR  - https://doi.org/10.1103/PhysRevC.95.015201
DO  - 10.1103/PhysRevC.95.015201
LA  - English
N1  - WOS:000391859600005
ID  - Cabrera_etal2017
ER  -