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Fast state tomography with optimal error bounds

https://doi.org/10.1088/1751-8121/ab8111

Guţă, M.; Kahn, J.; Kueng, R.; Tropp, J. A. (April 2020, Journal of Physics A: Mathematical and Theoretical)

Abstract Projected least squares is an intuitive and numerically cheap technique for quantum state tomography: compute the least-squares estimator and project it onto the space of states. The main result of this paper equips this point estimator with rigorous, non-asymptotic convergence guarantees expressed in terms of the trace distance. The estimator’ssample complexityis comparable to the strongest convergence guarantees available in the literature and—in the case of the uniform POVM—saturates fundamental lower bounds. Numerical simulations support these competitive features.
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Disproof of a conjecture of Alon and Spencer

Acan, H.; Kahn, J. (January 2019, Random structures algorithms)
null (Ed.)
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Search for the double-charmonium state with ηcJ/ψ at Belle

https://doi.org/10.1007/JHEP08(2023)121

Yin, J H; Li, Y B; Won, E; Adachi, I; Aihara, H; Al_Said, S; Asner, D M; Aushev, T; Ayad, R; Babu, V; et al (August 2023, Journal of High Energy Physics)

A<sc>bstract</sc> We measure the cross section ofe⁺e⁻→η_cJ/ψat the Υ(nS)(n= 1–5) on-resonance and 10.52 GeV off-resonance energy points using the full data sample collected by the Belle detector with an integrated luminosity of 955 fb⁻¹. We also search for double charmonium production ine⁺e⁻→η_cJ/ψvia initial state radiation near theη_cJ/ψthreshold. No evident signal of the double charmonium state is found, but evidence for thee⁺e⁻→ η_cJ/ψprocess is found with a statistical significance greater than 3.3σnear theη_cJ/ψthreshold. The average cross section near the threshold is measured and upper limits of cross sections are set for other regions.
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Search for the decay $B^{0} \to K^{* 0} τ^{+} τ^{-}$ at the Belle experiment

https://doi.org/10.1103/PhysRevD.108.L011102

Dong, T V; Luo, T; Adachi, I; Aihara, H; Asner, D M; Atmacan, H; Aulchenko, V; Aushev, T; Ayad, R; Babu, V; et al (July 2023, Physical Review D)

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Measurements of the branching fractions $B ({\bar{B}}^{0} \to D^{* +} π^{-})$ and $B ({\bar{B}}^{0} \to D^{* +} K^{-})$ and tests of QCD factorization

https://doi.org/10.1103/PhysRevD.107.012003

Krohn, J.-F.; Ferlewicz, D.; Urquijo, P.; Adachi, I.; Aihara, H.; Al Said, S.; Asner, D. M.; Atmacan, H.; Aushev, T.; Ayad, R.; et al (January 2023, Physical Review D)

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Search for the decay $B_{s}^{0} \to η^{'} K_{S}^{0}$

https://doi.org/10.1103/PhysRevD.106.L051103

Pang, T.; Savinov, V.; Adachi, I.; Aihara, H.; Asner, D. M.; Atmacan, H.; Aulchenko, V.; Aushev, T.; Ayad, R.; Babu, V.; et al (September 2022, Physical Review D)

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Search for $B^{0}$ meson decays into $Λ$ and missing energy with a hadronic tagging method at Belle

https://doi.org/10.1103/PhysRevD.105.L051101

Hadjivasiliou, C.; Fulsom, B. G.; Strube, J. F.; Adachi, I.; Aihara, H.; Asner, D. M.; Atmacan, H.; Aushev, T.; Babu, V.; Belous, K.; et al (March 2022, Physical Review D)

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Measurement of the branching fractions of the $B^{+} \to η ℓ^{+} ν_{ℓ}$ and $B^{+} \to η^{'} ℓ^{+} ν_{ℓ}$ decays with signal-side only reconstruction in the full $q^{2}$ range

https://doi.org/10.1103/PhysRevD.106.032013

Gebauer, U.; Beleño, C.; Frey, A.; Adachi, I.; Adamczyk, K.; Aihara, H.; Al Said, S.; Asner, D. M.; Atmacan, H.; Aushev, T.; et al (August 2022, Physical Review D)

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Search for the radiative penguin decays $B^{0} \to K_{S}^{0} K_{S}^{0} γ$ in the Belle experiment

https://doi.org/10.1103/PhysRevD.106.012006

Jeon, H. B.; Kang, K. H.; Park, H.; Adachi, I.; Aihara, H.; Al Said, S.; Asner, D. M.; Atmacan, H.; Aushev, T.; Ayad, R.; et al (July 2022, Physical Review D)

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First test of lepton flavor universality in the charmed baryon decays $Ω_{c}^{0} \to Ω^{-} ℓ^{+} ν_{ℓ}$ using data of the Belle experiment

https://doi.org/10.1103/PhysRevD.105.L091101

Li, Y. B.; Shen, C. P.; Adachi, I.; Aihara, H.; Al Said, S.; Asner, D. M.; Atmacan, H.; Aushev, T.; Ayad, R.; Babu, V.; et al (May 2022, Physical Review D)

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