More Like this

1. Search for the Lepton Flavor Violating Decays $B^{+}\to K^{+}{\tau }^{\pm }{\ell }^{\mp }$ ( $\ell =e$ , $\mu$ ) at Belle

   https://doi.org/10.1103/PhysRevLett.130.261802  

   Watanuki, S.; de Marino, G.; Trabelsi, K.; Adachi, I.; Aihara, H.; Asner, D. M.; Atmacan, H.; Aulchenko, V.; Aushev, T.; Ayad, R.; et al (June 2023, Physical Review Letters)
2. Tests of Lepton Universality Using $B^0\to K_S^0{\ell }^{+}{\ell }^{-}$ and $B^{+}\to K^{*+}{\ell }^{+}{\ell }^{-}$ Decays

   https://doi.org/10.1103/PhysRevLett.128.191802  

   Aaij, R.; Abdelmotteleb, A. S. W.; Abellán Beteta, C.; Abudinén, F.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Afsharnia, H.; Agapopoulou, C.; Aidala, C. A.; et al (May 2022, Physical Review Letters)
3. Measurements of $q^2$ moments of inclusive $B\to X_c{\ell }^{+}{\nu }_{\ell }$ decays with hadronic tagging

   https://doi.org/10.1103/PhysRevD.104.112011  

   van Tonder, R.; Cao, L.; Sutcliffe, W.; Welsch, M.; Bernlochner, F. U.; Adachi, I.; Aihara, H.; Asner, D. M.; Aushev, T.; Ayad, R.; et al (December 2021, Physical Review D)
4. Revisiting $C$ and $CP$ violation in $\eta \to {\pi }^{+}{\pi }^{-}{\pi }^0$ decay

   https://doi.org/10.1103/PhysRevD.110.055039  

   Shi, Jun; Liang, Jian; Gardner, Susan (September 2024, Physical Review D)

   The decay $\eta \to {\pi }^{+}{\pi }^{-}{\pi }^0$is an ideal process in which to study flavor-conserving $C$and $CP$violation beyond the Standard Model. We deduce the $C$- and $CP$-odd quark operators that contribute to $\eta \to {\pi }^{+}{\pi }^{-}{\pi }^0$originating from the mass-dimension-six Standard Model effective field theory. The corresponding hadron-level operators that generate a nonvanishing $I=0$amplitude at order $p^6$in the chiral effective theory are presented for the first time, to the best of our knowledge, in addition to the leading-order operators ascribed to the $I=2$final state. By fitting the KLOE-2 and the most recent BESIII experimental data, we determine the coefficients of the lowest-order $I=0$and $I=2$amplitudes and estimate the potential new physics energy scale. We also perform an impact study of the future $\eta \to {\pi }^{+}{\pi }^{-}{\pi }^0$experiments. Published by the American Physical Society2024 

   more » « less
5. Search for Rare $b\to d{\ell }^{+}{\ell }^{-}$ Transitions at Belle

   https://doi.org/10.1103/PhysRevLett.133.101804  

   Adachi, I; Aggarwal, L; Aihara, H; Akopov, N; Aloisio, A; Al_Said, S; Asner, D M; Atmacan, H; Aushev, V; Aversano, M; et al (September 2024, Physical Review Letters)

   We present the results of a search for the $b\to d{\ell }^{+}{\ell }^{-}$flavor-changing neutral-current rare decays $B^{+,0}\to (\eta ,\omega ,{\pi }^{+,0},{\rho }^{+,0})e^{+}{e}^{-}$and $B^{+,0}\to (\eta ,\omega ,{\pi }^0,{\rho }^{+}){\mu }^{+}{\mu }^{-}$using a $711{\mathrm{fb}}^{-1}$data sample that contains $772\times {10}^{6}B\overline{B}$events. The data were collected at the $\mathrm{\Upsilon }\left(4S\right)$resonance with the Belle detector at the KEKB asymmetric-energy $e^{+}{e}^{-}$collider. We find no evidence for signal and set upper limits on branching fractions at the 90% confidence level in the range $\left(3.8–47\right)\times {10}^{-8}$depending on the decay channel. The obtained limits are the world’s best results. This is the first search for the channels $B^{+,0}\to (\omega ,{\rho }^{+,0})e^{+}{e}^{-}$and $B^{+,0}\to (\omega ,{\rho }^{+}){\mu }^{+}{\mu }^{-}$. Published by the American Physical Society2024 

   more » « less