We investigate the chiral mass splitting of parity-doubled J=0,1 states for c \bar{ s} and c \bar{ n} meson systems in the \tilde{ U}(12)_{ SF}-classification scheme of hadrons, using the linear sigma model to describe the light-quark pseudoscalar and scalar mesons together with the spontaneous breaking of chiral symmetry, and consequently predict the masses of as-yet-unobserved (0^{ +},1^{ +}) c \bar{ n} mesons. We also mention some indications of their existence in the recent published data from the Belle and BABAR Collaborations.
Categories: hep-ph