Relatore
Sig.
Andrey Polyanskiy
(Institut für Kernphysik, Forschungszentrum Jülich)
Descrizione
The production of phi-mesons in collisions of 2.83 GeV protons
with C, Cu, Ag and Au nuclear targets has been measured with the ANKE
magnetic spectrometer at the Cooler Synchrotron COSY. The phi was
detected at small angles via its K+K- decay branch. The measured
target mass dependence of the production cross section can be related
to the in-medium phi width. Comparisons with three model
calculations suggest a significant broadening of this width relative
to the vacuum value of 4.3 MeV. The ANKE results in the momentum
range 0.6-1.6 GeV/c will be presented and compared with findings from
other experiments.
Autore principale
Sig.
Andrey Polyanskiy
(Institut für Kernphysik, Forschungszentrum Jülich)
