Search Results - "Ferlewicz, D."
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Test of lepton flavor universality and search for lepton flavor violation in B → Kℓℓ decays
Published in The journal of high energy physics (01-03-2021)“…A bstract We present measurements of the branching fractions for the decays B → Kμ + μ − and B → Ke + e − , and their ratio ( R K ), using a data sample of 711…”
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Combined analysis of Belle and Belle II data to determine the CKM angle ϕ 3 using B + → D( K S 0 $$ {K}_S^0 $$ h + h − )h + decays
Published in The journal of high energy physics (01-02-2022)“…Abstract We present a measurement of the Cabibbo-Kobayashi-Maskawa unitarity triangle angle ϕ 3 (also known as γ) using a model-independent Dalitz plot…”
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Search for a Heavy Neutrino in τ Decays at Belle
Published in Physical review letters (24-11-2023)“…We report on a search for a heavy Majorana neutrino in the decays τ^{-}→π^{-}ν_{h}, ν_{h}→π^{±}ℓ^{∓}, ℓ=e, μ. The results are obtained using the full data…”
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Tests of Light-Lepton Universality in Angular Asymmetries of B0→D-ℓν Decays
Published in Physical review letters (03-11-2023)“…We present the first comprehensive tests of light-lepton universality in the angular distributions of semileptonic $B^0$-meson decays to charged spin-1 charmed…”
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Measurement of Angular Coefficients of Bover ¯→D^{}ℓνover ¯_{ℓ}: Implications for |V_{cb}| and Tests of Lepton Flavor Universality
Published in Physical review letters (27-09-2024)“…We measure the complete set of angular coefficients J_{i} for exclusive B[over ¯]→D^{*}ℓν[over ¯]_{ℓ} decays (ℓ=e, μ). Our analysis uses the full 711 fb^{-1}…”
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Measurements of the Branching Fraction, Polarization, and CP Asymmetry for the Decay B^{0}→ωω
Published in Physical review letters (23-08-2024)“…We present a comprehensive study of B^{0}→ωω decays using 772×10^{6} BB[over ¯] pairs collected with the Belle detector at the KEKB e^{+}e^{-} collider. This…”
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Search for Baryon-Number-Violating Processes in B^{-} Decays to the Ξover ¯_{c}^{0}Λover ¯_{c}^{-} Final State
Published in Physical review letters (16-08-2024)“…We report the results of the first search for B^{-} decays to the Ξ[over ¯]_{c}^{0}Λ[over ¯]_{c}^{-} final state using 711 fb^{-1} of data collected at the…”
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Search for lepton-flavor-violating τ decays into a lepton and a vector meson using the full Belle data sample
Published in The journal of high energy physics (21-06-2023)“…A bstract Charged-lepton-flavor-violation is predicted in several new physics scenarios. We update the analysis of τ lepton decays into a light charged lepton…”
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Search for lepton-flavor-violating τ−→ μ−μ+μ− decays at Belle II
Published in The journal of high energy physics (11-09-2024)“…A bstract We present the result of a search for the charged-lepton-flavor violating decay τ − → μ − μ + μ − using a 424 fb − 1 sample of data recorded by the…”
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Test of light-lepton universality in τ decays with the Belle II experiment
Published in The journal of high energy physics (26-08-2024)“…A bstract We present a measurement of the ratio R μ = B τ − → μ − ν ¯ μ ν τ / B τ − → e − ν ¯ e ν τ of branching fractions B of the τ lepton decaying to muons…”
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Study of Υ(10753) decays to π+π−Υ(nS) final states at Belle II
Published in The journal of high energy physics (12-07-2024)“…A bstract We present an analysis of the process e + e − → π + π − Υ( nS ) (where n = 1, 2, or 3) reconstructed in 19 . 6 fb − 1 of Belle II data during a…”
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Search for charged-lepton flavor violation in Υ(2S) → ℓ∓τ± (ℓ = e, μ) decays at Belle
Published in The journal of high energy physics (23-02-2024)“…A bstract We report a search for the charged-lepton flavor violation in Υ(2 S ) → ℓ ∓ τ ± ( ℓ = e, μ ) decays using a 25 fb − 1 Υ(2 S ) sample collected by the…”
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First Simultaneous Determination of Inclusive and Exclusive | V u b
Published in Physical review letters (01-11-2023)Get full text
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Tests of Light-Lepton Universality in Angular Asymmetries of B 0 → D − ℓ ν Decays
Published in Physical review letters (01-10-2023)Get full text
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Measurement of C P Violation in B 0 → K S 0 π 0 Decays at Belle II
Published in Physical review letters (01-09-2023)“…We report a measurement of the C P -violating parameters C and S in B 0 → K S 0 π 0 decays at Belle II using a sample of 387 × 10 6 B B ¯ events recorded in e…”
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First Measurement of the Michel Parameter ξ ′ in the τ − → μ − ν ¯ μ ν τ Decay at Belle
Published in Physical review letters (01-07-2023)Get full text
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First measurement of the Michel parameter $\xi^\prime$ in the $\tau^-\to\mu^-\bar{\nu}_\mu\nu_\tau$ decay at Belle
Published in Physical review letters (01-07-2023)“…We report the first measurement of the Michel parameter ξ′ in the τ−→μ−¯νμντ decay with a new method proposed just recently. The measurement is based on the…”
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Search for the lepton flavour violating decays $B^{+} \to K^{+} \tau^\pm \ell^\mp$ ($\ell = e, \mu$) at Belle
Published in Physical review letters (28-06-2023)“…We present a search for the lepton-flavour-violating decays $B^+ \to K^+ \tau^\pm \ell^\mp$, with $\ell = (e, \mu)$, using the full data sample of $772 \times…”
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Search for an invisible $Z^\prime$ in a final state with two muons and missing energy at Belle II
Published in Physical review letters (07-06-2023)“…The $L_{\mu}-L_{\tau}$ extension of the standard model predicts the existence of a lepton-flavor-universality-violating $Z^{\prime}$ boson that couples only to…”
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Measurement of the e$^{+}$e$^{−}$→$ {B}_s^0{\overline{B}}_s^0X $ cross section in the energy range from 10.63 to 11.02 GeV using inclusive $ {D}_s^{+} $ and D$^{0}$ production
Published in The journal of high energy physics (21-08-2023)“…We report the first measurement of the inclusive e$^{+}$e$^{−}$→$ b\overline{b} $→$ {D}_s^{\pm } $X and e$^{+}$e$^{−}$→$ b\overline{b} $→ D$^{0}$/$…”
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