Speaker
Description
Since 2024, the $e^+e^-$ data at center-of-mass energy from $Z$-pole to $209\mathrm{\,GeV}$ collected by the DELPHI detector at the Large Electron-Positron collider (LEP) has been fully released to the world physics community. As one of the largest $e^+e^-$ data at the high energy frontier, the DELPHI open data makes it possible to extract new physics insights and gain practical experience for future collider experiments, by re-analyzing the data with modern theoretical and computational techniques.
This presentation reports the preliminary result of the $\Xi^{-}/\overline{\Xi}^+$ production rates and momentum spectra measurement in quark/gluon enriched jets, using $\sim 3.3$ million $Z\to \text{hadrons}$ events in the DELPHI open data collected from 1992 to 1995. The results are compared with that of other strange hadrons, such as $K^{\pm}$, $K_S^{0}$ and $\Lambda$. The comparison between the data and simulation from the generator is also presented. This study is the first measurement of the $\Xi^{-}/\overline{\Xi}^+$ production in jets and provides a foundation for future reanalyses of the DELPHI data.
| 请选择分会 | 强子物理与味物理 |
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