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1. Search for the decay $B_s^0\to {\eta }^{\prime }{K}_S^0$

   https://doi.org/10.1103/PhysRevD.106.L051103  

   Pang, T.; Savinov, V.; Adachi, I.; Aihara, H.; Asner, D. M.; Atmacan, H.; Aulchenko, V.; Aushev, T.; Ayad, R.; Babu, V.; et al (September 2022, Physical Review D)
2. Branching Fraction Measurements of the Rare $B_s^0\to \varphi {\mu }^{+}{\mu }^{-}$ and $B_s^0\to f_2^{\prime }\left(1525\right){\mu }^{+}{\mu }^{-}$ Decays

   https://doi.org/10.1103/PhysRevLett.127.151801  

   Aaij, R.; Abellán Beteta, C.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Afsharnia, H.; Aidala, C. A.; Aiola, S.; Ajaltouni, Z.; Akar, S.; et al (October 2021, Physical Review Letters)
3. Measurement of $CP$ asymmetries in $B^0\to {\eta }^{\prime }{K}_S^0$ decays at Belle II

   https://doi.org/10.1103/PhysRevD.110.112002  

   Adachi, I; Aggarwal, L; Ahmed, H; Aihara, H; Akopov, N; Aloisio, A; Anh_Ky, N; Asner, D M; Atmacan, H; Aushev, T; et al (December 2024, Physical Review D)

   We describe a measurement of charge-parity ( $CP$ ) violation asymmetries in $B^0\to {\eta }^{\prime }{K}_{\mathrm{S}}^0$ decays using Belle II data. We consider ${\eta }^{\prime }\to \eta (\to \gamma \gamma ){\pi }^{+}{\pi }^{-}$ and ${\eta }^{\prime }\to \rho (\to {\pi }^{+}{\pi }^{-})\gamma$ decays. The data were collected at the SuperKEKB asymmetric-energy $e^{+}{e}^{-}$ collider between the years 2019 and 2022, and contain $(387\pm 6)\times {10}^6$ bottom-antibottom meson pairs. We reconstruct $829\pm 35$ signal decays and extract the $CP$ violating parameters from a fit to the distribution of the proper-decay-time difference between the two $B$ mesons. The measured direct and mixing-induced $CP$ asymmetries are $C_{{\eta }^{\prime }{K}_{\mathrm{S}}^0}=-0.19\pm 0.08\pm 0.03$ and $S_{{\eta }^{\prime }{K}_{\mathrm{S}}^0}=+0.67\pm 0.10\pm 0.03$ , respectively, where the first uncertainties are statistical and the second are systematic. These results are in agreement with current world averages and standard model predictions. Published by the American Physical Society2024 

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4. Search for rare decays $B^{+}\to D_s^{(*)+}\eta$ , $D_s^{(*)+}{\overline{K}}^0$ , $D^{+}\eta$ , and $D^{+}{K}^0$

   https://doi.org/10.1103/PhysRevD.107.L031101  

   Kumar, M.; Bhardwaj, V.; Lalwani, K.; Adachi, I.; Aihara, H.; Asner, D. M.; Aushev, T.; Babu, V.; Behera, P.; Belous, K.; et al (February 2023, Physical Review D)
5. Measurement of branching fractions and $CP$ asymmetries for $D_s^{+}\to K^{+}(\eta ,{\pi }^0)$ and $D_s^{+}\to {\pi }^{+}(\eta ,{\pi }^0)$ decays at Belle

   https://doi.org/10.1103/PhysRevD.103.112005  

   Guan, Y.; Schwartz, A. J.; Kinoshita, K.; Adachi, I.; Aihara, H.; Al Said, S.; Asner, D. M.; Atmacan, H.; Aulchenko, V.; Aushev, T.; et al (June 2021, Physical Review D)

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