S. S. Tang

Charge readout electronics for the DUNE horizontal drift far detector: design and performance in ProtoDUNE-HD

DUNE Collaboration, S. Abbaslu, F. Abd Alrahman, A. Abed Abud et autres

DUNE (Deep Underground Neutrino Experiment) is a long-baseline neutrino oscillation experiment currently under construction, whose far detectors will be the largest liquid argon time projection chambers ever built. This detector design calls for custom-built cryogenic front-end electronics to meet its performance requirements. …

Search for $CP$ violation in $Ξ_c^+\toΣ^+h^+h^-$ and $Λ_c^+\to ph^+h^-$ at Belle II

M. Abumusabh, I. Adachi, H. Ahmed, Y. Ahn et autres

We report decay-rate $CP$ asymmetries of the singly-Cabibbo-suppressed decays $Ξ_c^+\toΣ^+h^+h^-$ and $Λ_c^+\to ph^+h^-$, with $h=K,π$, measured using 428 fb$^{-1}$ of $e^+e^-$ collisions collected by the Belle II experiment at the SuperKEKB collider. The results, \begin{equation} A_{CP}(Ξ_c^+\toΣ^+K^+K^-) = (3.7\pm6.6\pm0.6)\%, \end{equation}\begin{equation} A_{CP}(Ξ_c^+\toΣ^+π^+π^-) = (9.5\pm6.8\pm0.5)\%, …

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Search for the decay $B^+ \rightarrow K^+\tau^+\tau^-$ using data from the Belle and Belle II experiments

M. Abumusabh, I. Adachi, K. Adamczyk, A. Aggarwal et autres

We report a search for the rare decay $B^{+} \rightarrow K^{+} τ^{+} τ^{-}$ using $1.2 \times 10^9$$Υ(4S)$ mesons produced near threshold in electron-positron collisions and collected by the Belle and Belle~II experiments. We fully reconstruct the hadronic decay of one $B$ meson …

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First measurements of the branching fractions for the decay modes $Ξ_c^{0} \to Λη$ and $Ξ_c^0 \to Λη'$ and search for the decay $Ξ_c^{0} \to Λπ^0$ using Belle and Belle II data

M. Abumusabh, I. Adachi, L. Aggarwal, H. Ahmed et autres

Using data samples of 988.4 fb$^{-1}$ and 427.9 fb$^{-1}$ collected with the Belle and Belle II detectors, we present a study of the singly Cabibbo-suppressed decays $Ξ_c^{0} \to Λη$, $Λη'$, and $Λπ^0$. We observe the decay $Ξ_c^0 \to Λη$ and find evidence …

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Searches for charged-lepton-flavor violation in $χ_{bJ}(1P)$ decays

M. Abumusabh, I. Adachi, A. Aggarwal, L. Aggarwal et autres

We report the first searches for charged-lepton-flavor violation in decays of $χ_{bJ}(1P)$ ($J=0, 1,$ and $2$) to a pair of charged leptons using 158 million $Υ(2S)$ decays collected with the Belle detector in $e^+e^-$ collisions at the KEKB collider. No significant signal …

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Search for $e^{+} e^{-} \rightarrow \gamma \chi_{b J}$ $(J = 0, 1, 2)$ near $\sqrt{s}=10.746~\text{GeV}$ at Belle II

M. Abumusabh, I. Adachi, L. Aggarwal, H. Ahmed et autres

We search for the $e^{+} e^{-} \rightarrow \gamma \chi_{b J}$ $(J=0, 1, 2)$ processes at center-of-mass energies $\sqrt{s} = 10.653, 10.701, 10.746,$ and $10.804~ \text{GeV}$. These data were collected with the Belle II detector at the SuperKEKB collider and correspond to $3.5, …

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