Branching fractions of $$B^-\rightarrow D^-X_{0,1}(2900)$$
       
        
         
          B
          -
         
         →
         
          D
          -
         
         
          X
          
           0
           ,
           1
          
         
         
          (
          2900
          ) and their implications

Table 2 The strong coupling constants

Vertex	g	Vertex	g	Vertex	g
$\Lambda _c^+\rightarrow \Lambda ^0D_s^+$	5.83	$\Lambda _c^+\rightarrow \Sigma ^0D_s^+$	9.31	$\Xi _c^{\prime 0}\rightarrow \Lambda ^0D^0$	6.43
$\Xi _c^{\prime 0}\rightarrow \Sigma ^0D^0$	3.71	$X_0(2900)\rightarrow \overline{K}^0D^0$	1.0	$X_1(2900)\rightarrow \overline{K}D^0$	9.3
$D_s^{*-}\rightarrow \overline{K}^0D^-$	18.4	$P_c^+(4312)\rightarrow \Lambda _c^+D^0$	0.088	$P_c^+(4312)\rightarrow \Lambda _c^+D^{*0}$	0.58
$P_c^+(4440)\rightarrow \Lambda _c^+D^0$	0.80	$P_c^+(4440)\rightarrow \Lambda _c^+D^{*0}$	0.68	$\Xi _c^0\rightarrow \Lambda ^0 D^0$	1.59
$\Xi _c^0\rightarrow \Sigma ^0 D^0$	2.75	$K^{*-}\rightarrow \overline{K}^0\pi ^-$	4.60	$D^{*0}\rightarrow D^+\pi ^-$	17.9

Vertex	$f_1$	$f_2$	Vertex	$f_1$	$f_2$
$\Lambda _c^+\rightarrow \Lambda ^0 D_s^{*-}$	2.05	7.78	$\Xi _c^{\prime 0}\rightarrow \Lambda ^0D^{*0}$	− 5.63	− 10.0
$\Lambda _c^+\rightarrow \Sigma ^0 D_s^{*-}$	3.55	13.5	$\Xi _c^{\prime 0}\rightarrow \Sigma ^0D^{*0}$	− 3.2	− 6.0
$\Xi _c^{0}\rightarrow \Lambda ^0D^{*0}$	3.55	13.5	$\Xi _c^{0}\rightarrow \Sigma ^0D^{*0}$	2.05	7.78

Vertex	g	Vertex	g	Vertex	g
\(\Lambda _c^+\rightarrow \Lambda ^0D_s^+\)	5.83	\(\Lambda _c^+\rightarrow \Sigma ^0D_s^+\)	9.31	\(\Xi _c^{\prime 0}\rightarrow \Lambda ^0D^0\)	6.43
\(\Xi _c^{\prime 0}\rightarrow \Sigma ^0D^0\)	3.71	\(X_0(2900)\rightarrow \overline{K}^0D^0\)	1.0	\(X_1(2900)\rightarrow \overline{K}D^0\)	9.3
\(D_s^{*-}\rightarrow \overline{K}^0D^-\)	18.4	\(P_c^+(4312)\rightarrow \Lambda _c^+D^0\)	0.088	\(P_c^+(4312)\rightarrow \Lambda _c^+D^{*0}\)	0.58
\(P_c^+(4440)\rightarrow \Lambda _c^+D^0\)	0.80	\(P_c^+(4440)\rightarrow \Lambda _c^+D^{*0}\)	0.68	\(\Xi _c^0\rightarrow \Lambda ^0 D^0\)	1.59
\(\Xi _c^0\rightarrow \Sigma ^0 D^0\)	2.75	\(K^{*-}\rightarrow \overline{K}^0\pi ^-\)	4.60	\(D^{*0}\rightarrow D^+\pi ^-\)	17.9

Vertex	\(f_1\)	\(f_2\)	Vertex	\(f_1\)	\(f_2\)
\(\Lambda _c^+\rightarrow \Lambda ^0 D_s^{*-}\)	2.05	7.78	\(\Xi _c^{\prime 0}\rightarrow \Lambda ^0D^{*0}\)	− 5.63	− 10.0
\(\Lambda _c^+\rightarrow \Sigma ^0 D_s^{*-}\)	3.55	13.5	\(\Xi _c^{\prime 0}\rightarrow \Sigma ^0D^{*0}\)	− 3.2	− 6.0
\(\Xi _c^{0}\rightarrow \Lambda ^0D^{*0}\)	3.55	13.5	\(\Xi _c^{0}\rightarrow \Sigma ^0D^{*0}\)	2.05	7.78