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FacIt: Factorizing Tensors into Interpretable and Scrutinizable Patterns.

Wen, X.; Lin, Y.-R.; Ahn, Y.; Pelechrinis, K.; Liu, X.; Cao, N. (November 2019, IEEE Symposium on Visual Analytics Science and Technology (VAST 2019))

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PolicyFlow: Interpreting Policy Diffusion in Context

Ahn, Y.; Lin, Y.-R. (August 2018, ACM SIGKDD 2018 Workshop on Interactive Data Exploration and Analytics (IDEA 2018))

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Search for a heavy neutral lepton that mixes predominantly with the tau neutrino

https://doi.org/10.1103/PhysRevD.109.L111102

Nayak, M; Dey, S; Soffer, A; Adachi, I; Aihara, H; Al_Said, S; Asner, D M; Atmacan, H; Ayad, R; Babu, V; et al (June 2024, Physical Review D)

We report a search for a heavy neutral lepton (HNL) that mixes predominantly with $ν_{τ}$ . The search utilizes data collected with the Belle detector at the KEKB asymmetric energy $e^{+} e^{-}$ collider. The data sample was collected at and just below the center-of-mass energies of the $ϒ (4 S)$ and $ϒ (5 S)$ resonances and has an integrated luminosity of $915 {fb}^{- 1}$ , corresponding to $(836 \pm 12) \times 10^{6}$ $e^{+} e^{-} \to τ^{+} τ^{-}$ events. We search for production of the HNL (denoted $N$ ) in the decay $τ^{-} \to π^{-} N$ followed by its decay via $N \to μ^{+} μ^{-} ν_{τ}$ . The search focuses on the parameter-space region in which the HNL is long-lived, so that the $μ^{+} μ^{-}$ originate from a common vertex that is significantly displaced from the collision point of the KEKB beams. Consistent with the expected background yield, one event is observed in the data sample after application of all the event-selection criteria. We report limits on the mixing parameter of the HNL with the $τ$ neutrino as a function of the HNL mass. Published by the American Physical Society2024
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Measurement of $C P$ Asymmetries in $B^{0} \to K_{S}^{0} π^{0} γ$ Decays at Belle II

https://doi.org/10.1103/PhysRevLett.134.011802

Adachi, I; Aggarwal, L; Ahmed, H; Aihara, H; Akopov, N; Aloisio, A; Anh_Ky, N; Asner, D M; Atmacan, H; Aushev, T; et al (January 2025, Physical Review Letters)

We report measurements of time-dependent $C P$ asymmetries in $B^{0} \to K_{S}^{0} π^{0} γ$ decays based on a data sample of $(388 \pm 6) \times 10^{6} B \bar{B}$ events collected at the $ϒ (4 S)$ resonance with the Belle II detector. The Belle II experiment operates at the SuperKEKB asymmetric-energy $e^{+} e^{-}$ collider. We measure decay-time distributions to determine $C P$ -violating parameters $S$ and $C$ . We determine these parameters for two ranges of $K_{S}^{0} π^{0}$ invariant mass: $m (K_{S}^{0} π^{0}) \in (0.8, 1.0) GeV / c^{2}$ , which is dominated by $B^{0} \to K^{* 0} (\to K_{S}^{0} π^{0}) γ$ decays, and a complementary region $m (K_{S}^{0} π^{0}) \in (0.6, 0.8) \cup (1.0, 1.8) GeV / c^{2}$ . Our results have improved precision as compared to previous measurements and are consistent with theory predictions. Published by the American Physical Society2025
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Free, publicly-accessible full text available January 1, 2026
Search for charged-lepton flavor violation in Υ(2S) → ℓ∓τ± (ℓ = e, μ) decays at Belle

https://doi.org/10.1007/JHEP02(2024)187

Dhamija, R; Nishida, S; Giri, A; Adachi, I; Aihara, H; Asner, D M; Aushev, T; Ayad, R; Babu, V; Bahinipati, S; et al (February 2024, Journal of High Energy Physics)

A<sc>bstract</sc> We report a search for the charged-lepton flavor violation in Υ(2S) →ℓ^∓τ^±(ℓ=e, μ) decays using a 25 fb⁻¹Υ(2S) sample collected by the Belle detector at the KEKBe⁺e⁻asymmetric-energy collider. We find no evidence for a signal and set upper limits on the branching fractions ($$ \mathcal{B} $$ $B$ ) at 90% confidence level. We obtain the most stringent upper limits:$$ \mathcal{B} $$ $B$ (Υ(2S)→ μ^∓τ^±)<0.23×10⁻⁶and$$ \mathcal{B} $$ $B$ (Υ(2S)→ e^∓τ^±)<1.12×10⁻⁶.
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Search for a dark leptophilic scalar produced in association with $τ^{+} τ^{-}$ pair in $e^{+} e^{-}$ annihilation at center-of-mass energies near 10.58 GeV

https://doi.org/10.1103/PhysRevD.109.032002

Biswas, D; Banerjee, Sw; Adachi, I; Aihara, H; Asner, D M; Aushev, T; Ayad, R; Babu, V; Behera, P; Bennett, J; et al (February 2024, Physical Review D)

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Search for a Heavy Neutrino in $τ$ Decays at Belle

https://doi.org/10.1103/PhysRevLett.131.211802

Liventsev, D; Adachi, I; Aihara, H; Al_Said, S; Asner, D M; Atmacan, H; Ayad, R; Babu, V; Banerjee, Sw; Bauer, M; et al (November 2023, Physical Review Letters)

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Search for $C P$ violation in $D_{(s)}^{+} \to K^{+} K_{S}^{0} h^{+} h^{-}$ ( $h = K$ , $π$ ) decays and observation of the Cabibbo-suppressed decay $D_{s}^{+} \to K^{+} K^{-} K_{S}^{0} π^{+}$

https://doi.org/10.1103/PhysRevD.108.L111102

Moon, H K; Won, E; Adachi, I; Aihara, H; Asner, D M; Atmacan, H; Aulchenko, V; Aushev, T; Ayad, R; Babu, V; et al (December 2023, Physical Review D)

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Study of $B^{+} \to p \bar{n} π^{0}$

https://doi.org/10.1103/PhysRevD.108.112007

Chu, K-N; Lin, Y-R; Wang, M-Z; Adachi, I; Adamczyk, K; Aihara, H; Al_Said, S; Asner, D M; Atmacan, H; Aulchenko, V; et al (December 2023, Physical Review D)

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First Simultaneous Determination of Inclusive and Exclusive $| V_{u b} |$

https://doi.org/10.1103/PhysRevLett.131.211801

Cao, L; Bernlochner, F; Tackmann, K; Adachi, I; Aihara, H; Al_Said, S; Asner, D M; Atmacan, H; Aushev, T; Ayad, R; et al (November 2023, Physical Review Letters)

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