PT Journal
AU HADES Collaboration (Agakishiev, Gea
   Diaz, J
   Gil, A
TI In-medium effects on K-0 mesons in relativistic heavy-ion collisions
SO Physical Review C
JI Phys. Rev. C
PY 2010
BP 044907
EP 9pp
VL 82
IS 4
DI 10.1103/PhysRevC.82.044907
LA English
AB We present the transverse momentum spectra and rapidity distributions of pi(-) and K-S(0) in Ar + KCl reactions at a beam kinetic energy of 1.756 A GeV measured with the High Acceptance Di-Electron Spectrometer (HADES). The reconstructed K-S(0) sample is characterized by good event statistics for a wide range in momentum and rapidity. We compare the experimental pi(-) and K-S(0) distributions to predictions by the Isospin Quantum Molecular Dynamics (IQMD) model. The model calculations show that K-S(0) at low transverse momenta constitute a particularly well-suited tool to investigate the kaon in-medium potential. Our K-S(0) data suggest a strong repulsive in-medium K-0 potential of about 40 MeV strength.
ER