Heavy-strange meson molecules and possible candidates $D^*_{s0}(2317)$, $D_{s1}(2460)$, and $X_0(2900)$

Abstract

In this work, we systematically investigate the heavy-strange meson systems, D ( * ) K ( * ) / B( * ) K ( * ) and D( * ) K ( * ) /B ( * ) K ( * ) , to study possible molecules in a quasipotenial Bethe-Salpter equation approach together with the one-boson-exchange model. The potential is achieved with the help of the hidden-gau ge Lagrangians. Molecular states are found from all six S-wave isoscalar interactions of D ( * ) K ( * ) / B( * ) K ( * ) . The charmed-strange mesons D * s0 (2317) and D s1 (2460) can be related to the DK and D * K states with spin parities 0 + and 1 + , respectively. The recent observed B sJ (6158) may be assigned as a BK * molecular state with 1 + . Four molecular states are produced from the interactions of D( * ) K ( * ) /B ( * ) K ( * ) , among which the D * K * molecular state with 0 + can be related to the X 0 (2900). No isovector molecular states are found in the interactions considered. The current results are helpful to understand the internal structure of D * s0 (2317), D s1 (2460), X 0 (2900), and new B sJ states. The experimental research for more heavy-strange meson molecules are suggested.

An updated review of the new hadron states

“…In Ref. [211] the authors systematically studied the B( * ) K ( * ) hadronic molecular states in a quasipotential Bethe-Salpter equation approach together with the oneboson-exchange model. Their potential was achieved with the help of the hidden-gauge Lagrangians.…”

“…Later in Ref. [211] the authors investigated the heavy-strange meson systems D ( * ) K ( * ) and D( * ) K ( * ) through a quasipotenial Bethe-Salpter equation approach based on the one-boson-exchange model. As shown in Fig.…”

How to understand the $X(2900)$?

“…One can also consult Refs. [20][21][22][23][24][25][26][27][28][29][30][31] for other pertinent works.…”