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1. Measurements of the branching fractions of ${\mathrm{\Xi }}_c^0\to \mathrm{\Lambda }{K}_S^0$ , ${\mathrm{\Xi }}_c^0\to {\mathrm{\Sigma }}^0{K}_S^0$ , and ${\mathrm{\Xi }}_c^0\to {\mathrm{\Sigma }}^{+}{K}^{-}$ decays at Belle

   https://doi.org/10.1103/PhysRevD.105.L011102  

   Li, Y.; Cui, J. X.; Jia, S.; Shen, C. P.; Adachi, I.; Ahn, J. K.; Aihara, H.; Al Said, S.; Asner, D. M.; Atmacan, H.; et al (January 2022, Physical Review D)
2. First search for the weak radiative decays ${\mathrm{\Lambda }}_c^{+}\to {\mathrm{\Sigma }}^{+}\gamma$ and ${\mathrm{\Xi }}_c^0\to {\mathrm{\Xi }}^0\gamma$

   https://doi.org/10.1103/PhysRevD.107.032001  

   Li, Y.; Shen, C. P.; Adachi, I.; Aihara, H.; Asner, D. M.; Aulchenko, V.; Aushev, T.; Babu, V.; Behera, P.; Belous, K.; et al (February 2023, Physical Review D)
3. First measurements of the branching fractions for the decay modes ${\mathrm{\Xi }}_c^0\to \mathrm{\Lambda }\eta$ and ${\mathrm{\Xi }}_c^0\to \mathrm{\Lambda }{\eta }^{\prime }$ and search for the decay ${\mathrm{\Xi }}_c^0\to \mathrm{\Lambda }{\pi }^0$ using Belle and Belle II data

   https://doi.org/10.1103/q4n8-fqj1  

   Abumusabh, M; Adachi, I; Aggarwal, L; Ahmed, H; Ahn, Y; Aihara, H; Akopov, N; Alghamdi, S; Alhakami, M; Aloisio, A; et al (February 2026, Physical Review D)

   Using data samples of $988.4{\mathrm{fb}}^{-1}$and $427.9{\mathrm{fb}}^{-1}$collected with the Belle and Belle II detectors, we present a study of the singly Cabibbo-suppressed decays ${\mathrm{\Xi }}_c^0\to \mathrm{\Lambda }\eta$, $\mathrm{\Lambda }{\eta }^{\prime }$, and $\mathrm{\Lambda }{\pi }^0$. We observe the decay  ${\mathrm{\Xi }}_c^0\to \mathrm{\Lambda }\eta$and find evidence for the decay ${\mathrm{\Xi }}_c^0\to \mathrm{\Lambda }{\eta }^{\prime }$, with corresponding branching ratios determined to be $\mathcal{B}({\mathrm{\Xi }}_c^0\to \mathrm{\Lambda }\eta )/\mathcal{B}({\mathrm{\Xi }}_c^0\to {\mathrm{\Xi }}^{-}{\pi }^{+})=(4.16\pm 0.91\pm 0.23)\%$and $\mathcal{B}({\mathrm{\Xi }}_c^0\to \mathrm{\Lambda }{\eta }^{\prime })/\mathcal{B}({\mathrm{\Xi }}_c^0\to {\mathrm{\Xi }}^{-}{\pi }^{+})=(2.48\pm 0.82\pm 0.12)\%$, respectively. We find no significant signal in the ${\mathrm{\Xi }}_c^0\to \mathrm{\Lambda }{\pi }^0$decay mode and set an upper limit at the 90% credibility level of $\mathcal{B}({\mathrm{\Xi }}_c^0\to \mathrm{\Lambda }{\pi }^0)/\mathcal{B}({\mathrm{\Xi }}_c^0\to {\mathrm{\Xi }}^{-}{\pi }^{+})<3.5\%$. Multiplying these ratios by the world-average branching fraction of the normalization channel, $\mathcal{B}({\mathrm{\Xi }}_c^0\to {\mathrm{\Xi }}^{-}{\pi }^{+})=(1.43\pm 0.27)\%$, we obtain the absolute branching fractions of $\mathcal{B}({\mathrm{\Xi }}_c^0\to \mathrm{\Lambda }\eta )=(5.95\pm 1.30\pm 0.32\pm 1.13)\times {10}^{-4}$, $\mathcal{B}({\mathrm{\Xi }}_c^0\to \mathrm{\Lambda }{\eta }^{\prime })=(3.55\pm 1.17\pm 0.17\pm 0.68)\times {10}^{-4}$, and an upper limit at the 90% credibility level on the absolute branching fraction of $\mathcal{B}({\mathrm{\Xi }}_c^0\to \mathrm{\Lambda }{\pi }^0)<5.2\times {10}^{-4}$. The quoted first and second uncertainties are statistical and systematic, respectively, while the third uncertainties arise from the branching fraction of the normalization mode. These results are consistent with most theoretical predictions and further the understanding of the underlying decay mechanisms. 

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4. Evidence for the decay ${\mathrm{\Omega }}_c^0\to {\pi }^{+}\mathrm{\Omega }(2012{)}^{-}\to {\pi }^{+}(\overline{K}\mathrm{\Xi }{)}^{-}$

   https://doi.org/10.1103/PhysRevD.104.052005  

   Li, Y.; Tang, S. S.; Jia, S.; Shen, C. P.; Adachi, I.; Aihara, H.; Al Said, S.; Asner, D. M.; Atmacan, H.; Aulchenko, V.; et al (September 2021, Physical Review D)
5. Search for the semileptonic decays ${\mathrm{\Xi }}_c^0\to {\mathrm{\Xi }}^0{\ell }^{+}{\ell }^{-}$ at Belle

   https://doi.org/10.1103/PhysRevD.109.052003  

   Cui, J X; Li, Y B; Shen, C P; Adachi, I; Aihara, H; Al_Said, S; Asner, D M; Aushev, T; Ayad, R; Babu, V; et al (March 2024, Physical Review D)