Primordial Black Hole Formation from Power Spectrum with Finite-width

Kavli Affiliate: Misao Sasaki | First 5 Authors: Shi Pi, Misao Sasaki, Volodymyr Takhistov, Jianing Wang, | Summary: Primordial Black Holes (PBHs) can form from gravitational collapse of large overdensities in the early Universe, giving rise to rich phenomena in astrophysics and cosmology. We develop a novel, general, and accurate method based on theory of […]


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Harish-Chandra’s admissibility theorem and beyond

Kavli Affiliate: Toshiyuki Kobayashi | First 5 Authors: Toshiyuki Kobayashi, , , , | Summary: This article is a record of the lecture at the centennial conference for Harish-Chandra. The admissibility theorem of Harish-Chandra concerns the restrictions of irreducible representations to maximal compact subgroups. In this article, we begin with a brief explanation of two […]


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Natural Language Fine-Tuning

Kavli Affiliate: Jia Liu | First 5 Authors: Jia Liu, Yue Wang, Zhiqi Lin, Min Chen, Yixue Hao | Summary: Large language model fine-tuning techniques typically depend on extensive labeled data, external guidance, and feedback, such as human alignment, scalar rewards, and demonstration. However, in practical application, the scarcity of specific knowledge poses unprecedented challenges […]


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Flavor Physics at CEPC: a General Perspective

Kavli Affiliate: Jia Liu | First 5 Authors: Xiaocong Ai, Wolfgang Altmannshofer, Peter Athron, Xiaozhi Bai, Lorenzo Calibbi | Summary: We discuss the landscape of flavor physics at the Circular Electron-Positron Collider (CEPC), based on the nominal luminosity outlined in its Technical Design Report. The CEPC is designed to operate in multiple modes to address […]


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Measurement of the branching fraction, polarization, and time-dependent $CP$ asymmetry in $B^0 to ρ^+ρ^-$ decays and constraint on the CKM angle $φ_2$

Kavli Affiliate: T. Higuchi | First 5 Authors: Belle II Collaboration, I. Adachi, L. Aggarwal, H. Ahmed, N. Akopov | Summary: We present a measurement of the branching fraction and fraction of longitudinal polarization of $B^0 to rho^+ rho^-$ decays, which have two $pi^0$’s in the final state. We also measure time-dependent $CP$ violation parameters […]


Continue.. Measurement of the branching fraction, polarization, and time-dependent $CP$ asymmetry in $B^0 to ρ^+ρ^-$ decays and constraint on the CKM angle $φ_2$

Measurement of the branching fraction, polarization, and time-dependent $CP$ asymmetry in $B^0 to ρ^+ρ^-$ decays and constraint on the CKM angle $φ_2$

Kavli Affiliate: T. Higuchi | First 5 Authors: Belle II Collaboration, I. Adachi, L. Aggarwal, H. Ahmed, N. Akopov | Summary: We present a measurement of the branching fraction and fraction of longitudinal polarization of $B^0 to rho^+ rho^-$ decays, which have two $pi^0$’s in the final state. We also measure time-dependent $CP$ violation parameters […]


Continue.. Measurement of the branching fraction, polarization, and time-dependent $CP$ asymmetry in $B^0 to ρ^+ρ^-$ decays and constraint on the CKM angle $φ_2$

Comprehensive Bayesian Exploration of Froggatt-Nielsen Mechanism

Kavli Affiliate: Satoshi Shirai | First 5 Authors: Masahiro Ibe, Satoshi Shirai, Keiichi Watanabe, , | Summary: The Froggatt-Nielsen (FN) mechanism successfully explains the hierarchical structure of fermion Yukawa couplings by introducing a U(1) flavor symmetry with distinct charge assignments for different fermion generations. While some FN charge assignments have been proposed, their evaluation has […]


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Comprehensive Bayesian Exploration of Froggatt-Nielsen Mechanism

Kavli Affiliate: Satoshi Shirai | First 5 Authors: Masahiro Ibe, Satoshi Shirai, Keiichi Watanabe, , | Summary: The Froggatt-Nielsen (FN) mechanism successfully explains the hierarchical structure of fermion Yukawa couplings by introducing a U(1) flavor symmetry with distinct charge assignments for different fermion generations. While some FN charge assignments have been proposed, their evaluation has […]


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Search for lepton flavor-violating decay modes $B^0to K_S^0τ^pmell^mp~(ell=μ, e)$ with hadronic $B$-tagging at Belle and Belle II

Kavli Affiliate: T. Higuchi | First 5 Authors: Belle, Belle II Collaborations, :, I. Adachi, K. Adamczyk | Summary: We present the first search for the lepton flavor-violating decay modes $B^0 rightarrow K_S^0 tau^pm ell^mp~(ell=mu, e)$ using the 711 fb$^{-1}$ and 365 fb$^{-1}$ data samples recorded by the Belle and Belle II detectors, respectively. We […]


Continue.. Search for lepton flavor-violating decay modes $B^0to K_S^0τ^pmell^mp~(ell=μ, e)$ with hadronic $B$-tagging at Belle and Belle II

Impact of reionization history on constraining primordial gravitational waves in future all-sky cosmic microwave background experiments

Kavli Affiliate: Toshiya Namikawa | First 5 Authors: Hanchun Jiang, Toshiya Namikawa, , , | Summary: We explore the impact of the reionization history on examining the shape of the power spectrum of the primordial gravitational waves (PGWs) with the cosmic microwave background (CMB) polarization. The large-scale CMB generated from the reionization epoch is important […]


Continue.. Impact of reionization history on constraining primordial gravitational waves in future all-sky cosmic microwave background experiments