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   https://doi.org/10.1103/PhysRevD.111.L091101  

   Aaij, R; Abdelmotteleb, A_S W; Abellan_Beteta, C; Abudinén, F; Ackernley, T; Adefisoye, A A; Adeva, B; Adinolfi, M; Adlarson, P; Agapopoulou, C; et al (May 2025, Physical Review D)

   A search for $D^0$meson decays to the ${\pi }^{+}{\pi }^{-}{e}^{+}{e}^{-}$and $K^{+}{K}^{-}{e}^{+}{e}^{-}$final states is reported using a sample of proton-proton collisions collected by the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of $6{\mathrm{fb}}^{-1}$. The decay $D^0\to {\pi }^{+}{\pi }^{-}{e}^{+}{e}^{-}$is observed for the first time when requiring that the two electrons are consistent with coming from the decay of a $\varphi$or ${\rho }^0/\omega$meson. The corresponding branching fractions are measured relative to the $D^0\to K^{-}{\pi }^{-}[e^{+}{e}^{-}{]}_{{\rho }^0/\omega }$decay, where the two electrons are consistent with coming from the decay of a ${\rho }^0$or $\omega$meson. No evidence is found for the $D^0\to K^{+}{K}^{-}{e}^{+}{e}^{-}$decay and world-best limits are set on its branching fraction. The results are compared to, and found to be consistent with, the branching fractions of the $D^0\to {\pi }^{+}{\pi }^{-}{\mu }^{+}{\mu }^{-}$and $D^0\to K^{+}{K}^{-}{\mu }^{+}{\mu }^{-}$decays recently measured by LHCb and confirm lepton universality at the current precision. © 2025 CERN, for the LHCb Collaboration2025CERN 

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2. Near-threshold collisional dynamics in the $e^{-}{e}^{+}p$ system

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   Ambalampitiya, H. B.; Stallbaumer, J.; Fabrikant, I. I.; Kalinkin, I.; Fursa, D. V.; Kadyrov, A. S.; Bray, I. (September 2023, Physical Review A)
3. Search for an Invisibly Decaying $Z^{\prime }$ Boson at Belle II in $e^{+}{e}^{-}\to {\mu }^{+}{\mu }^{-}\left(e^{\pm }{\mu }^{\mp }\right)$ Plus Missing Energy Final States

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   Gu, L.; Abrams, D.; Ankowski, A. M.; Jiang, L.; Aljawrneh, B.; Alsalmi, S.; Bane, J.; Batz, A.; Barcus, S.; Barroso, M.; et al (March 2021, Physical Review C)

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5. Search for a ${\tau }^{+}{\tau }^{-}$ Resonance in $e^{+}{e}^{-}\to {\mu }^{+}{\mu }^{-}{\tau }^{+}{\tau }^{-}$ Events with the Belle II Experiment

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