Strong decays of the low-lying doubly bottom baryons

Abstract

In this work, we adopt the 3 P 0 model to investigate the strong decays of the low-lying doubly bottom baryons in the j − j coupling scheme systematically. In this scheme, we construct the formulism of 3 P 0 model under the spectator assumption, and then the heavy diquark symmetry is preserved automatically. Our results show that some of the λ-mode Ξ bb (1P) and Ω bb (1P) states are narrow, which have good potentials to be observed by future experiments. For the low-lying ρ-mode and ρ-λ hybrid states, the Okubo-Zweig-Iizuka-allowed strong decays are highly suppressed and they should be extremely narrow. Future experiments can test our phenomenological predictions at the quark level.

Magic mixing angles for doubly heavy baryons

“…Please refer to pioneering and latest works on doubly heavy baryons in Refs. [2][3][4][5][6][7]. Among many novel features of a heavy-light system, a "magic" mixing angle of heavy-light mesons between 3 P 1 and 1 P 1 states is very remarkable in that it is uniquely determined in the heavy quark limit and is used to obtain physical states from nonrelativistic states.…”