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Št. zadetkov: 9
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Oznake: eksperimentalna fizika;fizika osnovnih delcev;razpadi delcev;experimental physics;physics of elementary particles;particle decays;
We present the first search for the lepton-flavor-violating decay modes $B^0 \to K^0_S\tau^{\pm}\ell^{\mp}(\ell = \mu, e)$ using the 711 and 365 fb$^{-1}$ data samples recorded by the Belle and Belle II detectors, respectively. We use a hadronic $B$-tagging technique to fully reconstruct a $B$ meson ...
Leto: 2025 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake: Belle experiment;beyond standard model;magnetic spectrometer;
We measure the branching fraction of the decay 𝐵−→𝐷0⁢𝜌⁢(770)− using data collected with the Belle II detector. The data contain 387 million 𝐵⁢ ¯ 𝐵 pairs produced in 𝑒+⁢𝑒− collisions at the ϒ⁡(4⁢𝑆) resonance. We reconstruct 8360±180 decays from an analysis of the distributions of the 𝐵− ene ...
Leto: 2024 Vir: Institut Jožef Stefan (IJS)
Izvirni znanstveni članek
Oznake: fizika osnovnih delcev;eksperimentalna fizika;razpadi mezonov;physics of elementary particles;experimental physics;meson decays;
We present a study of the rare charm meson decays $D^0 \to K^+K^-e^+e^-, \pi^+\pi^-e^+e^-$, and $K^-\pi^+e^+e^-$ using a 942 fb$^{-1}$ dataset collected by the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. We identify $D^0$ candidates via the charge of the pion from $D^{\ast +} \to ...
Leto: 2025 Vir: Fakulteta za matematiko in fiziko (UL FMF)
Št. zadetkov: 9
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