Kavli Affiliate: Yuji Tachikawa | First 5 Authors: Yuki Kojima, Yuji Tachikawa, , , | Summary: Let $N(Gamma,G)$ be the number of homomorphisms from $Gamma$ to $G$ up to conjugation by $G$. Physics of four-dimensional $mathcal{N}=4$ supersymmetric gauge theories predicts that $N(Gamma,G)=N(Gamma , tilde G)$ when $Gamma$ is a finite subgroup of $SU(2)$, $G$ is […]
Kavli Affiliate: Shigeki Matsumoto | First 5 Authors: Sung Hak Lim, Kohei Hayashi, Shun’ichi Horigome, Shigeki Matsumoto, Mihoko M. Nojiri | Summary: The kinematics of stars in dwarf spheroidal galaxies have been studied to understand the structure of dark matter halos. However, the kinematic information of these stars is often limited to celestial positions and […]
Kavli Affiliate: T. Higuchi | First 5 Authors: K. Ravindran, K. Adamczyk, H. Aihara, S. Bacher, S. Bahinipati | Summary: In 2024, the Belle II experiment resumed data taking after the Long Shutdown 1, which was required to install a two-layer pixel detector and upgrade accelerator components. We describe the challenges of this shutdown and […]
Kavli Affiliate: Hitoshi Murayama | First 5 Authors: Ronny Frumkin, Yonit Hochberg, Eric Kuflik, Hitoshi Murayama, | Summary: Inverse decays are an interesting avenue for producing dark matter in the early universe. We study in detail various phases of dark matter parameter space where inverse decays control its abundance, expanding on our work of INDY […]
Kavli Affiliate: T. Higuchi | First 5 Authors: Belle, Belle II Collaborations, :, I. Adachi, Y. Ahn | Summary: We measure the time-integrated $CP$ asymmetry in $D^0 to K^0_{rm S} K^0_{rm S}$ decays reconstructed in $e^+e^-to c{overline c}$ events collected by the Belle and Belle II experiments. The corresponding data samples have integrated luminosities of […]
Kavli Affiliate: T. Higuchi | First 5 Authors: Belle, Belle II Collaborations, :, I. Adachi, L. Aggarwal | Summary: We present the results of a search for charged-lepton-flavor violating decays $tau^{-} rightarrow ell^{-}K_{S}^{0}$, where $ell^{-}$ is either an electron or a muon. We combine $e^+e^-$ data samples recorded by the Belle II experiment at the […]
Kavli Affiliate: Jia Liu | First 5 Authors: Jia Liu, Cheng Jinguo, Xia Fang, Zhenyuan Ma, Yuankai Wu | Summary: Time series foundation models excel at diverse time series forecasting tasks, but their capacity for continuous improvement through incremental learning remains unexplored. We present the first comprehensive study investigating these models’ temporal plasticity – their […]
Kavli Affiliate: Masahiro Kawasaki | First 5 Authors: Masahiro Kawasaki, Kai Murai, Fuminobu Takahashi, , | Summary: We study the evolution of Q-balls under a spontaneously broken global $U(1)$ symmetry. Q-balls are stabilized by the conservation of $U(1)$ charge, but when the symmetry is spontaneously broken, the resulting Nambu-Goldstone (NG) boson can carry charge away […]
Kavli Affiliate: Tom Melia | First 5 Authors: Yu Watanabe, Shigeki Matsumoto, Christopher M. Karwin, Tom Melia, Michela Negro | Summary: Light weakly interacting massive particles (WIMPs), whose masses are in the sub-GeV scale, have been attracting more attention due to the negative results searching for traditional WIMPs. The light WIMPs are expected to produce […]
Kavli Affiliate: Jia Liu | First 5 Authors: Yuyang Zhang, Xinhe Zhang, Jia Liu, Na Li, | Summary: In this paper, we focus on learning linear dynamical systems under noisy observations. In this setting, existing algorithms either yield biased parameter estimates, or suffer from large sample complexities. To address these issues, we adapt the instrumental […]