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1. Measurement of ${\eta }_c\left(1S\right)$ , ${\eta }_c\left(2S\right)$ , and nonresonant ${\eta }^{\prime }{\pi }^{+}{\pi }^{-}$ production via two-photon collisions

   https://doi.org/10.1103/PhysRevD.98.072001  

   Xu, Q. N.; Adachi, I.; Aihara, H.; Al Said, S.; Asner, D. M.; Atmacan, H.; Aulchenko, V.; Aushev, T.; Ayad, R.; Babu, V.; et al (October 2018, Physical Review D)
2. Measurement of the branching fraction, polarization, and time-dependent $CP$ asymmetry in $B^0\to {\rho }^{+}{\rho }^{-}$ decays and constraint on the CKM angle ${\varphi }_2$

   https://doi.org/10.1103/PhysRevD.111.092001  

   Adachi, I; Aggarwal, L; Ahmed, H; Akopov, N; Alhakami, M; Aloisio, A; Althubiti, N; Anh_Ky, N; Asner, D M; Atmacan, H; et al (May 2025, Physical Review D)

   We present a measurement of the branching fraction and fraction of longitudinal polarization of $B^0\to {\rho }^{+}{\rho }^{-}$decays, which have two ${\pi }^0$’s in the final state. We also measure time-dependent $CP$violation parameters for decays into longitudinally polarized ${\rho }^{+}{\rho }^{-}$pairs. This analysis is based on a data sample containing $(387\pm 6)\times {10}^6$ $\mathrm{\Upsilon }\left(4S\right)$mesons collected with the Belle II detector at the SuperKEKB asymmetric-energy $e^{+}{e}^{-}$collider in 2019–2022. We obtain $\mathcal{B}(B^0\to {\rho }^{+}{\rho }^{-})=\left(2.89_{-0.22}^{+0.23}{}_{-0.27}^{+0.29}\right)\times {10}^{-5}$, $f_L=0.921_{-0.025}^{+0.024}{}_{-0.015}^{+0.017}$, $S=-0.26\pm 0.19\pm 0.08$, and $C=-0.02\pm 0.12_{-0.05}^{+0.06}$, where the first uncertainties are statistical and the second are systematic. We use these results to perform an isospin analysis to constrain the Cabibbo-Kobayashi-Maskawa angle ${\varphi }_2$and obtain two solutions; the result consistent with other Standard Model constraints is ${\varphi }_2=\left({92.6}_{-4.7}^{+4.5}\right)°$. Published by the American Physical Society2025 

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3. Search for time-dependent $CP$ violation in $D^0\to K^{+}{K}^{-}$ and $D^0\to {\pi }^{+}{\pi }^{-}$ decays

   https://doi.org/10.1103/PhysRevD.104.072010  

   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 D)
4. Explaining $g_{\mu }-2$ and $R_{K^{(*)}}$ using the light mediators of $U(1{)}_{T3R}$

   https://doi.org/10.1103/PhysRevD.105.015011  

   Dutta, Bhaskar; Ghosh, Sumit; Huang, Peisi; Kumar, Jason (January 2022, Physical Review D)
5. Measurement of the branching fractions of the $B^{+}\to \eta {\ell }^{+}{\nu }_{\ell }$ and $B^{+}\to {\eta }^{\prime }{\ell }^{+}{\nu }_{\ell }$ decays with signal-side only reconstruction in the full $q^2$ range

   https://doi.org/10.1103/PhysRevD.106.032013  

   Gebauer, U.; Beleño, C.; Frey, A.; Adachi, I.; Adamczyk, K.; Aihara, H.; Al Said, S.; Asner, D. M.; Atmacan, H.; Aushev, T.; et al (August 2022, Physical Review D)