We present the transverse momentum spectra and rapidity distributions of π- and KS0 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 KS0 sample is characterized by good event statistics for a wide range in momentum and rapidity. We compare the experimental π- and KS0 distributions to predictions by the Isospin Quantum Molecular Dynamics (IQMD) model. The model calculations show that KS0 at low transverse momenta constitute a particularly well-suited tool to investigate the kaon in-medium potential. Our KS0 data suggest a strong repulsive in-medium K0 potential of about 40 MeV strength.
In-medium effects on K0 mesons in relativistic heavy-ion collisions
DESTEFANIS, MARCO GIOVANNI;SPATARO, STEFANO GIOVANNI;
2010-01-01
Abstract
We present the transverse momentum spectra and rapidity distributions of π- and KS0 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 KS0 sample is characterized by good event statistics for a wide range in momentum and rapidity. We compare the experimental π- and KS0 distributions to predictions by the Isospin Quantum Molecular Dynamics (IQMD) model. The model calculations show that KS0 at low transverse momenta constitute a particularly well-suited tool to investigate the kaon in-medium potential. Our KS0 data suggest a strong repulsive in-medium K0 potential of about 40 MeV strength.
| File | Dimensione | Formato | |
|---|---|---|---|
|
e044907.pdf
Accesso riservato
Tipo di file:
POSTPRINT (VERSIONE FINALE DELL’AUTORE)
Dimensione
792.22 kB
Formato
Adobe PDF
|
792.22 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
