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September 10, 2025Physical review. D/Physical review. D.Open Access

B→K+ axionlike particles: Effective versus UV-complete models and enhanced two-loop contributions

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Authors

XGXiyuan GaoUNUlrich Nierste

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Overview

Observational analysis clarifies enhanced two-loop contributions in the decay B→K+ involving axionlike particles, suggesting the importance of better experimental searches.

Key Points

  • B→K+ decay shows significant enhancement due to two-loop contributions, challenging previous simpler analyses.
  • Findings indicate that the two-loop contribution is unsuppressed for tanβ ≳ 5, demanding further exploration in experiments.
  • Comparison with earlier studies underscores discrepancies at the two-loop level, revealing gaps in current theoretical models.
  • The research highlights the relevance of axion effective theories and clarifies ambiguities related to the DFSZ model's parameter space.

Cite This Study

Gao et al. (2025) studied this question.

synapsesocial.com/papers/68c193fb9b7b07f3a061842dhttps://doi.org/10.1103/5j2t-2kdf
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