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Graph Diffusion Transformer for Multi-Conditional Molecular Generation

Liu, G; Xu, J; Luo, T; Jiang, M (December 2024, Conference on Neural Information Processing Systems)

Free, publicly-accessible full text available December 27, 2025
Leveraging low-fidelity data to improve machine learning of sparse high-fidelity thermal conductivity data via transfer learning

https://doi.org/10.1016/j.mtphys.2022.100868

Liu, Z.; Jiang, M.; Luo, T. (November 2022, Materials Today Physics)

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DADP: Dynamic abnormality detection and progression for longitudinal knee magnetic resonance images from the Osteoarthritis Initiative

https://doi.org/10.1016/j.media.2021.102343

Huang C.; Xu Z.; Shen Z.; Luo T.; Li T.; Nissman D.; Nelson A.; Golightly Y.; Niethammer M.; Zhu H. (April 2022, Medical image analysis)

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B-spline Parameterized Joint Optimization of Reconstruction and K-space Sampling Patterns (BJORK) for Accelerated 2D Acquisition

Wang, G; Luo, T; Nielsen, J.F.; Fessler, J.A.; Noll, D.C. (January 2021, International Society Magnetic Resonance in Medicine)

The proposed approach, BJORK, provides a robust and generalizable workflow to jointly optimize non-Cartesian sampling patters and a physics-informed reconstruction. Several approaches, including re-parameterization of trajectories, multi-level optimization, and non-Cartesian unrolled neural networks, are introduced to improve training effect and avoid sub-optimal local minima. The invivo experiments show that the networks and trajectories learned on simulation dataset are transferable to the real acquisition even with different parameter-weighted MRI contrasts and noise-levels, and demonstrate improved image quality compared with previous learning-based and model-based trajectory optimization methods.
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Long-distance optical pulling of nanoparticle in a low index cavity using a single plane wave

https://doi.org/10.1126/sciadv.aaz3646

Lee, E.; Luo, T. (May 2020, Science Advances)

Optical pulling force (OPF) can make a nanoparticle (NP) move against the propagation direction of the incident light. Long-distance optical pulling is highly desired for nano-object manipulation, but its realization remains challenging. We propose an NP-in-cavity structure that can be pulled by a single plane wave to travel long distances when the spherical cavity wrapping the NP has a refractive index lower than the medium. An electromagnetic multipole analysis shows that NPs made of many common materials can receive the OPF inside a lower index cavity. Using a silica-Au core-shell NP that is encapsulated by a plasmonic nanobubble, we experimentally demonstrate that a single laser can pull the Au NP-in-nanobubble structure for ~0.1 mm. These results may lead to practical applications that can use the optical pulling of NP, such as optically driven nanostructure assembly and nanoswimmers.
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Interplaying mechanisms behind inclusive jet R and extraction of jet energy loss distributions

https://doi.org/10.1016/j.nuclphysa.2020.122032

He, Y.; Cao, S.; Chen, W.; Luo, T.; Pang, L.-G.; Wang, X.-N. (January 2021, Nuclear Physics A)
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Search for two-body $B$ meson decays to $Λ^{0}$ and $Ω_{c}^{(*) 0}$

https://doi.org/10.1103/PhysRevD.110.L031102

Savinov, V; Adachi, I; Ahn, J K; Aihara, H; Asner, D M; Atmacan, H; Ayad, R; Banerjee, Sw; Bennett, J; Bessner, M; et al (August 2024, Physical Review D)

We report the results of the first search for Standard Model and baryon-number-violating two-body decays of the neutral $B$ mesons to $Λ^{0}$ and $Ω_{c}^{(*) 0}$ using $711 {fb}^{- 1}$ of data collected at the $ϒ (4 S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^{+} e^{-}$ collider. We observe no evidence of signal from any such decays and set 95% confidence-level upper limits on the products of $B^{0}$ and ${\bar{B}}^{0}$ branching fractions for these two-body decays with $B (Ω_{c}^{0} \to π^{+} Ω^{-})$ in the range between $9.5 \times 10^{- 8}$ and $31.2 \times 10^{- 8}$ . Published by the American Physical Society2024
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Free, publicly-accessible full text available August 1, 2025
Observation of the decay $B^{0} \to J / ψ ω$ at Belle II

https://doi.org/10.1103/PhysRevD.111.032012

Adachi, I; Aggarwal, L; Ahmed, H; Aihara, H; Akopov, N; Alhakami, M; Aloisio, A; Althubiti, N; Anh_Ky, N; Asner, D M; et al (February 2025, Physical Review D)

We measure the branching fraction of the decay $B^{0} \to J / ψ ω$ using data collected with the Belle II detector at the SuperKEKB collider. The data contain $(387 \pm 6) \times 10^{6} B \bar{B}$ meson pairs produced in energy-asymmetric $e^{+} e^{-}$ collisions at the $ϒ (4 S)$ resonance. The measured branching fraction $B (B^{0} \to J / ψ ω) = (2.16 \pm 0.30 \pm 0.14) \times 10^{- 5}$ , where the first uncertainty is statistical and the second is systematic, is more precise than previous results and constitutes the first observation of the decay with a significance of 6.5 standard deviations. Published by the American Physical Society2025
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Free, publicly-accessible full text available February 1, 2026
Measurements of the Branching Fraction, Polarization, and $C P$ Asymmetry for the Decay $B^{0} \to ω ω$

https://doi.org/10.1103/PhysRevLett.133.081801

Guan, Y; Schwartz, A J; Kinoshita, K; Adachi, I; Aihara, H; Al_Said, S; Asner, D M; Atmacan, H; Ayad, R; Bahinipati, S; et al (August 2024, Physical Review Letters)

We present a comprehensive study of $B^{0} \to ω ω$ decays using $772 \times 10^{6} B \bar{B}$ pairs collected with the Belle detector at the KEKB $e^{+} e^{-}$ collider. This process is a suppressed charmless decay into two vector mesons and can exhibit interesting polarization and $C P$ violation. The decay is observed for the first time with a significance of 7.9 standard deviations. We measure a branching fraction $B = (1.53 \pm 0.29 \pm 0.17) \times 10^{- 6}$ , a fraction of longitudinal polarization $f_{L} = 0.87 \pm 0.13 \pm 0.13$ , and a time-integrated $C P$ asymmetry $A_{C P} = - 0.44 \pm 0.43 \pm 0.11$ , where the first uncertainties listed are statistical and the second are systematic. This is the first observation of $B^{0} \to ω ω$ and the first measurements of $f_{L}$ and $A_{C P}$ for this decay. Published by the American Physical Society2024
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Free, publicly-accessible full text available August 1, 2025
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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