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![HEPExperPapers Avatar](https://lunarcrush.com/gi/w:24/cr:twitter::132430810.png) HEP - Experiment [@HEPExperPapers](/creator/twitter/HEPExperPapers) on x XXX followers
Created: 2025-07-21 06:51:28 UTC

Improved measurement of $\eta / \eta^{\prime}$ mixing in $B^{0}_{(s)} \rightarrow J/\psi \eta^{(\prime)}$ decays.


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**Related Topics**
[$b0s](/topic/$b0s)
[$eta](/topic/$eta)

[Post Link](https://x.com/HEPExperPapers/status/1947187654799274422)