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Baryonic decays involving the \(b \rightarrow d\) quark transition are very sensitive to new physics (NP) effects. Recent experimental observations of the \(\varLambda _b^0 \rightarrow pK^- \mu ^+ \mu ^-\) decay motivate theorists to study baryonic decays [1]. In this work, we intend to study \(\varLambda _b \rightarrow n l^+ l^-\) decays in the non-universal \(Z'\) model. We estimate the transverse polarization asymmetry for \(\varLambda _b \rightarrow n l^+ l^-\) decays. To determine new physics effects, we use quark coupling from \(B_d^0 - \overline{B}_d^0\) mixing. We hope these results will help the experimental community explore these kinds of decays at the LHCb/Belle II detector in the near future.

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Study of Transverse Polarization Asymmetry of  \(\varLambda _b\rightarrow nl^+ l^-\) Decays with Non-Universal \(Z'\) Model

  • 会议论文

  • 发表日期：

    2025年

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  • R. Ray,
  • S. Sahoo

摘要

Baryonic decays involving the \(b \rightarrow d\) quark transition are very sensitive to new physics (NP) effects. Recent experimental observations of the \(\varLambda _b^0 \rightarrow pK^- \mu ^+ \mu ^-\) decay motivate theorists to study baryonic decays [1]. In this work, we intend to study \(\varLambda _b \rightarrow n l^+ l^-\) decays in the non-universal \(Z'\) model. We estimate the transverse polarization asymmetry for \(\varLambda _b \rightarrow n l^+ l^-\) decays. To determine new physics effects, we use quark coupling from \(B_d^0 - \overline{B}_d^0\) mixing. We hope these results will help the experimental community explore these kinds of decays at the LHCb/Belle II detector in the near future.