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The decays of \( B \) mesons to the \( K_S^0 \eta \gamma \) final state constitute flavor-changing neutral current \( b \rightarrow s \gamma \) transitions, which are forbidden at tree level in the Standard Model and occur via higher-order loop diagrams. Such decays are sensitive to physics beyond the Standard Model due to the potential contribution of new particles in the loops. This report presents a preliminary study of charge-parity violation in \( B \rightarrow K_S^0 \eta \gamma \) decays, performed using Monte Carlo simulations to estimate the expected signal sensitivity for the dataset expected by Belle II in the future.

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Measurement of Time-Dependent CP Asymmetries in  \(B^0 \rightarrow K_S^0 \eta \gamma \) Decays at Belle and Belle II

  • 会议论文

  • 发表日期：

    2025年

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  • Cheshta,
  • Rishabh Mehta,
  • Suneel Dutt,
  • Gagan Mohanty

摘要

The decays of \( B \) mesons to the \( K_S^0 \eta \gamma \) final state constitute flavor-changing neutral current \( b \rightarrow s \gamma \) transitions, which are forbidden at tree level in the Standard Model and occur via higher-order loop diagrams. Such decays are sensitive to physics beyond the Standard Model due to the potential contribution of new particles in the loops. This report presents a preliminary study of charge-parity violation in \( B \rightarrow K_S^0 \eta \gamma \) decays, performed using Monte Carlo simulations to estimate the expected signal sensitivity for the dataset expected by Belle II in the future.