20.500.12556/RUL-178840 Search for lepton flavor-violating decay modes $B^0 \to K^{*0}\tau^{\pm}\ell^{\mp}(\ell = e,\mu)$ with hadronic B-tagging at Belle and Belle II We present the results of a search for the charged-lepton-flavor violating decays $B^0\rightarrow K^{*0}\tau^\pm\ell^\mp$, where $\ell^\mp$ is either an electron or a muon. The results are based on 365 fb$^{-1}$ and 711 fb$^{-1}$ datasets collected with the Belle II and Belle detectors, respectively. We use an exclusive hadronic $B$-tagging technique, and search for a signal decay in the system recoiling against a fully reconstructed $B$ meson. We find no evidence for $B^0\rightarrow K^{*0}\tau^\pm\ell^\mp$ decays and set upper limits on the branching fractions in the range of (2.9–6.4)$\times10^{-5}$ at 90% confidence level. experimental physics physics of elementary particles flavour physics particle decays eksperimentalna fizika fizika osnovnih delcev fizika okusov razpadi delcev true false true Angleški jezik Slovenski jezik Članek v reviji 2026-01-30 13:05:58 2026-01-30 13:05:59 2026-03-16 13:17:31 0000-00-00 00:00:00 2025 0 0 21 str. art. no. 184 Vol. 2025 Aug. 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 539.1 1029-8479 10.1007/JHEP08(2025)184 266677507 JHEP08(2025)184_(1).pdf JHEP08(2025)184_(1).pdf 1 B4930E71AD1E26B52D329F7EE3528C4E 5a8e5ee894df374a9fc69bfcc984f92a3810e42ee153f292b82cdf21166c76d3 2e2b2233-fdd4-11f0-a1ba-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=226855 https://link.springer.com/article/10.1007/JHEP08(2025)184 0 386ca6e5-fdd4-11f0-a1ba-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=226856 Fakulteta za matematiko in fiziko 0 0 0