$$X_0(2900)$$ X 0 ( 2900 ) and its spin partners productions in the $$B^+$$ B + decay processes

Abstract

Abstract In the present work, we investigate the productions of $$X_0(2900)$$ X 0 ( 2900 ) and its spin partners in the $$B^+$$ B + decay processes, where $$X_0(2900)$$ X 0 ( 2900 ) is regarded as a $$\bar{D}^*K^*$$ D ¯ ∗ K ∗ molecular state. We infer that the initial $$B^+$$ B + meson and the final $$D^+ X_0(2900)$$ D + X 0 ( 2900 ) are connected through the $$D_{s1}^{\prime +}(2460) \bar{D}^{*0} $$ D s 1 ′ + ( 2460 ) D ¯ ∗ 0 mesons by exchanging a $$K^{*0}$$ K ∗ 0 meson. The contributions of such a meson loop to the process $$B^+ \rightarrow D^+ X_0(2900)$$ B + → D + X 0 ( 2900 ) are evaluated and our estimations indicate that the measured branching fraction of $$B^+\rightarrow D^+ X_0(2900)$$ B + → D + X 0 ( 2900 ) could be well reproduced in a reasonable range of model parameters, indicating that $$X_0(2900)$$ X 0 ( 2900 ) could be interpreted as a $$\bar{D}^*K^*$$ D ¯ ∗ K ∗ molecular state. In addition, the production processes $$B^+ \rightarrow D^+ \tilde{X}_{1,2}$$ B + → D + X ~ 1 , 2 , $$B^+ \rightarrow D^{*+} X_0(2900)$$ B + → D ∗ + X 0 ( 2900 ) , and $$B^+ \rightarrow D^{*+}\tilde{X}_{1,2}$$ B + → D ∗ + X ~ 1 , 2 are investigated, and we find that the fit fraction of $$\tilde{X}_1$$ X ~ 1 in the process $$B^+ \rightarrow D^{*+} D^{*-} K^+$$ B + → D ∗ + D ∗ - K + is about 6%, which should be accessible by the LHCb and Belle II Collaborations.