Conveners
Flavor I
- Sandra Kvedaraite
- Sandra Kvedaraite
The $K \to \mu^+ \mu^-$ decay is often considered to be uninformative of fundamental theory parameters since the decay is polluted by long-distance hadronic effects. We demonstrate that, using very mild assumptions and utilizing time-dependent interference effects, $ \mathcal{B} (K_S \to \mu^+ \mu^-)_{ℓ=0}$ can be experimentally determined without the need to separate the $\ell=0$ and $\ell=1$...
Dark showers from strongly interacting dark sectors that confine at the GeV scale can give rise to novel signatures at electron-positron colliders. In my talk, I will discuss the sensitivity of B factory experiments to dark showers produced through an effective interaction arising from a heavy off-shell mediator. I will show that a prospective search for displaced vertices at Belle II can...
We search for the SM decays $\bar{B}^{0} \to \bar{\Lambda}^{0} \Omega_{c}^{0}$ and $\bar{B}^{0} \to \bar{\Lambda}^{0} \Omega_{c}(2770)^{0}$, and BSM decays $\bar{B}^{0} \to \bar{\Lambda}^{0}\bar{\Omega}_{c}^{0}$ and $\bar{B}^{0} \to \bar{\Lambda}^{0}\bar{\Omega}_{c}(2770)^{0}$ using the full Belle data sample of 711~${\rm fb^{-1}}$ that contains 772 million $B\bar{B}$ pairs collected at the...
We report on the first search for baryon-number-violating decay $B^- \to \bar{\Xi}_c^0 \Lambda_c^-$ using data collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. The results are also interpreted in terms of the previously-discovered Standard Model decay $B^- \to \Xi_c^0 \Lambda_c^-$ followed by possible $\Xi_c^0-\bar{\Xi}_c^0$ oscillations. The measurements of...
