New <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>X</mml:mi><mml:mrow><mml:mn>0</mml:mn><mml:mo>,</mml:mo><mml:mn>1</mml:mn></mml:mrow></mml:msub><mml:mo stretchy="false">(</mml:mo><mml:mn>2900</mml:mn><mml:mo stretchy="false">)</mml:mo></mml:math> -like exotic states in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>b</mml:mi></mml:math> -baryon decays

In the $B^+\to D^+ D^-K^+$ decay, LHCb has reported observation of open-charm exotic states $X_{0,1}^0\equiv X_{0,1}(2900)^0$ with four different quark flavors~$(ud\bar s \bar c)$, where subscripts (0,1) denote spins. To confirm discovery, we propose $\Lambda_b\to \Sigma_c^{0(++)} X_{0,1}^{\prime\,0(--)}$ in final state interaction, $X_{0,1}^{\prime\,0(--)}$ $s u\bar d c$ ($ds\bar u c$) are new $X_{0,1}$-like states. More specifically, $\Lambda_c^+D_s^-$ \Lambda_c^+D_s^-$ transformed as $\Sigma_c^{0(++)} X_{0,1}^{\prime\,0(--)}$, by exchanging $\pi^{+(-)}$. As order magnitude estimates, calculate ${\cal B}(\Lambda_b\to X_{0,1}^{\prime\,0(--)}) =(2.3\pm 0.6,4.3\pm 0.8^{+3.3}_{-2.5})\times 10^{-4}$. addition, estimate other $b$-baryon decays states, such B}(\Xi_{b}^{0(-)}\to \Xi_{c}^{0(+)}(2645)X_{0}^{\prime\,0(--)}, \Lambda_{b}\to \Xi_{c}^{\prime\,0}X_{0,1}^{0})\sim 10^{-5}$. While one needs \Sigma_c^{0(++)}M_c M$ to observe $X_{0,1}^{\prime\,0(--)}\to M_c $M_c M=D_s^-\pi^+$, $\bar D^0 K^0$ $(D_s^-\pi^-$, $D^-K^-)$, X_{0,1}^{\prime\,0(--)}, X_{0,1}^{\prime\,0(--)}\to M)\sim 10^{-4}$ accessible experiment.