https://doi.org/10.1140/epjc/s10052-020-08659-4
Regular Article - Theoretical Physics
Two-body charmed baryon decays involving decuplet baryon in the quark-diagram scheme
School of Physics and Information Engineering, Shanxi Normal University, Linfen, 041004, China
* e-mail: yukuohsiao@gmail.com
Received:
9
July
2020
Accepted:
11
November
2020
Published online:
19
November
2020
In the quark-diagram scheme, we study the charmed baryon decays of $$\mathbf{B}_c\rightarrow \mathbf{B}^* M$$, where $$\mathbf{B}_c$$ is $$\Lambda _c^+$$ or $$\Xi _c^{+(0)}$$, together with $$\mathbf{B}^*$$ (M) the decuplet baryon (pseudoscalar meson). It is found that only two W-exchange processes are allowed to contribute to $$\mathbf{B}_c\rightarrow \mathbf{B}^* M$$. Particularly, we predict $${\mathcal {B}}(\Lambda _c^+ \rightarrow \Sigma ^{*0(+)} \pi ^{+(0)})=(2.8\pm 0.4)\times 10^{-3}$$, which respects the isospin symmetry. Besides, we take into account the SU(3) flavor symmetry breaking, in order to explain the observation of $${\mathcal {B}}(\Lambda _c^+\rightarrow \Sigma ^{*+}\eta )$$. For the decays involving $$\Delta ^{++}(uuu)$$, we predict $${\mathcal {B}}(\Lambda _c^+\rightarrow \Delta ^{++} \pi ^-,\Xi _c^+ \rightarrow \Delta ^{++} K^-) =(7.0\pm 1.4,13.5\pm 2.7)\times 10^{-4}$$ as the largest branching fractions in the singly Cabibbo-suppressed $$\Lambda _c^+,\Xi _c^+\rightarrow \mathbf{B}^*M$$ decay channels, respectively, which are accessible to the LHCb, BELLEII and BESIII experiments.
© The Author(s), 2020
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