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Y Seino

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Articles 745
Citations 5090
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Recent Articles
11.
Adachi I, Aggarwal L, Aihara H, Akopov N, Aloisio A, Anh Ky N, et al.
Phys Rev Lett . 2023 Nov; 131(17):171803. PMID: 37955504
We measure the lifetime of the D_{s}^{+} meson using a data sample of 207  fb^{-1} collected by the Belle II experiment running at the SuperKEKB asymmetric-energy e^{+}e^{-} collider. The lifetime...
12.
Adachi I, Adamczyk K, Aggarwal L, Ahmed H, Aihara H, Akopov N, et al.
Phys Rev Lett . 2023 Oct; 131(12):121802. PMID: 37802942
We report the first search for a nonstandard-model resonance decaying into τ pairs in e^{+}e^{-}→μ^{+}μ^{-}τ^{+}τ^{-} events in the 3.6-10  GeV/c^{2} mass range. We use a 62.8  fb^{-1} sample of e^{+}e^{-}...
13.
Adachi I, Adamczyk K, Aggarwal L, Ahmed H, Aihara H, Akopov N, et al.
Phys Rev Lett . 2023 Sep; 131(11):111803. PMID: 37774261
We report a measurement of the CP-violating parameters C and S in B^{0}→K_{S}^{0}π^{0} decays at Belle II using a sample of 387×10^{6}  BB[over ¯] events recorded in e^{+}e^{-} collisions at...
14.
Aggarwal L, Ahmed H, Aihara H, Akopov N, Aloisio A, Anh Ky N, et al.
Phys Rev Lett . 2023 Aug; 131(5):051804. PMID: 37595249
We present the first measurement of the ratio of branching fractions of inclusive semileptonic B-meson decays, R(X_{e/μ})=B(B→Xeν)/B(B→Xμν), a precision test of electron-muon universality, using data corresponding to 189  fb^{-1} from...
15.
Bodrov D, Pakhlov P, Adachi I, Aihara H, Al Said S, Asner D, et al.
Phys Rev Lett . 2023 Jul; 131(2):021801. PMID: 37505960
We report the first measurement of the Michel parameter ξ^{'} in the τ^{-}→μ^{-}ν[over ¯]_{μ}ν_{τ} decay with a new method proposed just recently. The measurement is based on the reconstruction of...
16.
Watanuki S, de Marino G, Trabelsi K, Adachi I, Aihara H, Asner D, et al.
Phys Rev Lett . 2023 Jul; 130(26):261802. PMID: 37450824
We present a search for the lepton flavor violating decays B^{+}→K^{+}τ^{±}ℓ^{∓}, with ℓ=(e,μ), using the full data sample of 772×10^{6}  BB[over ¯] pairs recorded by the Belle detector at the...
17.
Adachi I, Adamczyk K, Aggarwal L, Ahmed H, Aihara H, Akopov N, et al.
Phys Rev Lett . 2023 Jun; 130(23):231801. PMID: 37354391
The L_{μ}-L_{τ} extension of the standard model predicts the existence of a lepton-flavor-universality-violating Z^{'} boson that couples only to the heavier lepton families. We search for such a Z^{'} through...
18.
Lai Y, Adachi I, Aihara H, Al Said S, Asner D, Atmacan H, et al.
Phys Rev Lett . 2023 May; 130(18):181804. PMID: 37204904
We study B^{+}→π^{+}π^{0}π^{0} using 711  fb^{-1} of data collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. We measure an inclusive branching fraction of...
19.
Adachi I, Adamczyk K, Aggarwal L, Ahmed H, Aihara H, Akopov N, et al.
Phys Rev Lett . 2023 May; 130(18):181803. PMID: 37204890
We search for lepton-flavor-violating τ^{-}→e^{-}α and τ^{-}→μ^{-}α decays, where α is an invisible spin-0 boson. The search uses electron-positron collisions at 10.58 GeV center-of-mass energy with an integrated luminosity of...
20.
Ma Y, Yelton J, Tanida K, Adachi I, Ahn J, Aihara H, et al.
Phys Rev Lett . 2023 Apr; 130(15):151903. PMID: 37115880
Using the data sample of 980  fb^{-1} collected with the Belle detector operating at the KEKB asymmetric-energy e^{+}e^{-} collider, we present the results of an investigation of the Λπ^{+} and...