Investigating in-medium properties of the ω meson via the ω→π0γ decay

Janus Weil, Ulrich Mosel, Volker Metag
2013 Physics Letters B  
We investigate the feasibility of studying in-medium properties of the ω meson in photoproduction experiments via the decay ω→π^0γ. We use the GiBUU transport model to compare different methods of obtaining in-medium information, such as the invariant mass spectrum, transparency ratio, excitation function and momentum spectrum. We show that the final-state interaction of the pion poses a major obstacle for the interpretation of the invariant mass spectrum. The other three observables turn out
more » ... be fairly independent of final-state interactions and thus can give access to the ω's in-medium properties.
doi:10.1016/j.physletb.2013.04.064 fatcat:zhqkzksmbrdw7igwav4mrfie7a