000003665 001__ 3665
000003665 005__ 20230705123459.0
000003665 037__ $$aBELLE2-CONF-DRAFT-2023-011
000003665 041__ $$aeng
000003665 100__ $$aValerio Bertacchi
000003665 245__ $$aBelle II status and prospects for studies of neutral currents
000003665 260__ $$a$$c2023-06-29
000003665 300__ $$a5
000003665 500__ $$aProceedings of the conference "New Frontiers in Lepton Flavor", Pisa, 2023.  The relative talk is: BELLE2-TALK-CONF-2023-059
000003665 520__ $$aThe Belle~II experiment at the SuperKEKB energy-asymmetric electron-positron collider is a substantial upgrade of the B factory facility at the Japanese KEK laboratory. Belle~II collected a sample of $362~\mathrm{fb}^{-1}$ at the $\Upsilon(4S)$ resonance between 2019 and the 2022, with a maximum peak luminosity of $4.7~\cdot 10^{34}~\mathrm{cm}^{-2}s^{-1}$. We report the recent measurements which involve neutral current transitions in $B$ meson decays. In particular, we present the branching fractions measurements of the radiative decays $B\to K^*\gamma$ and the fully inclusive $B\to X_s\gamma$,   the search for $B^+\to K^+\nu\overline \nu$ decays,  the measurement of the branching fractions of $B\to J/\psi(\to \ell\ell)K$ and $B\to K^*\ell\ell$.  We also present the future prospects and the expected improvements for all the listed measurements. Finally, we show the perspectives of the search for $B\to K^{*}\tau\tau$ and the searches of lepton flavor violating channels $B\to K^{(*)}\ell\ell'$,  with $\ell=e, \mu, \tau$. 
000003665 6531_ $$aNeutral Currents
000003665 6531_ $$aElectroweak penguins
000003665 6531_ $$aradiative decays
000003665 6531_ $$aLepton Flavor Violation
000003665 6531_ $$aLepton Flavor Universality
000003665 8560_ $$fbertacchi@cppm.in2p3.fr
000003665 8564_ $$uhttps://docs.belle2.org/record/3665/files/BELLE2-CONF-DRAFT-2023-011.pdf
000003665 8564_ $$uhttps://docs.belle2.org/record/3665/files/%20BELLE2-CONF-DRAFT-2023-011_v2.pdf$$yVersion 2 (2023-07-05)