B meson spectroscopy
arXiv:0711.2359 · doi:10.1103/PhysRevD.77.017501
Abstract
We study the $B$ meson spectroscopy allowing the mixture of conventional $P$ wave quark-antiquark states and four-quark components. A similar picture was used to describe the new $D_J$ and $D_{sJ}$ open charm mesons. The four-quark components shift the masses of some positive parity $B_{sJ}$ states below their corresponding isospin preserving two-meson threshold and therefore they are expected to be narrow. Electromagnetic decay widths are analyzed.
8 pages, 5 tables. Accepted for publication in Physical Review D