Medium Effects of Low Energy Pions
Friedman, E.
Original · EN
Fits of pion-nucleus potentials to large sets of pionic atom data reveal departures of parameter values from the corresponding free πN parameters. These medium effects can be quantitatively reproduced by a chiral-motivated model where the pion decay constant is modified in the medium or by including the empirical on-shell energy dependence of the amplitudes. No consistency is obtained between pionic atoms and the free πN interaction when an extreme off-shell chiral model is used. The role of the size of data sets is briefly discussed.
English translation
This paper has no Arabic translation yet. Be the first: it takes a few seconds, and the result is stored for every future reader.