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<p><i>CP</i> violation in the kaon system can manifest itself in decays to final states containing neutral kaons. The effect is governed by an efficiency function that reflects the specific experimental setup. We demonstrate that this efficiency function factorizes into two components: the kaon energy spectrum and a detector-dependent factor that is independent on the decay process. We show that matter effects on kaon oscillations can have a significant effect on <i>CP</i> asymmetries. We provide estimates of the theoretical prediction for some such <i>CP</i> asymmetries for a Belle II-type experiment.</p>

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CP violation in decays into states with neutral kaons

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年4月22日

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  • Yuval Grossman,
  • Paolo Leo,
  • Alberto Martini,
  • Guglielmo Papiri,
  • Armine Rostomyan

摘要

CP violation in the kaon system can manifest itself in decays to final states containing neutral kaons. The effect is governed by an efficiency function that reflects the specific experimental setup. We demonstrate that this efficiency function factorizes into two components: the kaon energy spectrum and a detector-dependent factor that is independent on the decay process. We show that matter effects on kaon oscillations can have a significant effect on CP asymmetries. We provide estimates of the theoretical prediction for some such CP asymmetries for a Belle II-type experiment.