Properties of chiral scalar and axial-vector mesons in heavy-light quark systems

摘要

We investigate the properties of new scalar X-B, X-D and axial-vector X-B*, X-D* mesons, which were recently predicted, in the covariant meson-classification scheme, to exist as the partners of the ground-state pseudoscalar B,D and vector B-*,D-* mesons, respectively, realizing a linear representation of chiral symmetry for the light quark component in heavy-light quark meson systems. These mesons are considered as the states being different from the ordinary P Wave mesons with j(q) = 1/2 in HQET. The mass splittings between the respective chiral partners are shown to be equal. and the decay widths of the one pion emission of X-B. X-D, X-B* and X-D* are to have the same value, due to chiral and heavy quark symmetry. [References: 49]