Münster 2011 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
HK: Fachverband Physik der Hadronen und Kerne
HK 11: Hadronenstruktur und -spektroskopie III
HK 11.6: Talk
Monday, March 21, 2011, 18:00–18:15, C-2
Measurement of the in-medium φ-meson width in proton-nucleus collisions — •Andrey Polyanskiy — Institut für Kernphysik and Jülich Center for Hadron Physics, Forschungszentrum Jülich
The production of φ-mesons in collisions of 2.83 GeV protons with C, Cu, Ag and Au targets has been measured with the ANKE magnetic spectrometer at the Cooler Synchrotron COSY. The φ 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 φ width. Comparisons with available model calculations suggest a significant broadening of this width relative to the vacuum value of 4.3 MeV/c2. Since this was a high statistics experiment, with 7000-10000 φ per target, we were able to study the momentum dependence of the in-medium φ width and results will be presented in the range 0.6<pφ<1.6 GeV/c.
Supported by the COSY-FFE program.