We present a measurement of the branching fraction of 𝘉⁺→τ⁺ντ decays using 387±6×10⁶ 𝜰(4𝑆) collected between 2019 and 2022 with the Belle II detector at the SuperKEKB ℯ⁺ℯ⁻ collider. We reconstruct the accompanying 𝘉⁻ meson using the hadronic tagging method, while 𝘉⁺→τ⁺ντ candidates are identified in the recoil. We find evidence for 𝘉⁺→τ⁺ντ decays at 3.0 standard deviations, including systematic uncertainties. The measured branching fraction is Ɓ(𝘉⁺→τ⁺ντ)=[1.24±0.41(stat)±0.19(syst)]×10⁻⁴.
CORRESPONDENCE ANALYSIS WITH DOUBLING FOR TWO-MODE VALUED NETWORKS / D'Ambrosio, Daniela; De Stefano, D; Ragozini, G. - (2014). ( European Conference on Social Networks Barcellona 1-4 Luglio 2014).
CORRESPONDENCE ANALYSIS WITH DOUBLING FOR TWO-MODE VALUED NETWORKS
D'AMBROSIO Daniela;
2014
Abstract
We present a measurement of the branching fraction of 𝘉⁺→τ⁺ντ decays using 387±6×10⁶ 𝜰(4𝑆) collected between 2019 and 2022 with the Belle II detector at the SuperKEKB ℯ⁺ℯ⁻ collider. We reconstruct the accompanying 𝘉⁻ meson using the hadronic tagging method, while 𝘉⁺→τ⁺ντ candidates are identified in the recoil. We find evidence for 𝘉⁺→τ⁺ντ decays at 3.0 standard deviations, including systematic uncertainties. The measured branching fraction is Ɓ(𝘉⁺→τ⁺ντ)=[1.24±0.41(stat)±0.19(syst)]×10⁻⁴.| File | Dimensione | Formato | |
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