January 1, 2025Open Access

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

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Analysis reveals minimal model allows enhanced two-loop contributions in B → K+ transitions, suggesting unexplored axionlike effects.

Enhanced two-loop contributions emerge from the minimal model due to suppressed leading-order amplitudes, maximizing at tan β ≳ 5.
The analysis critiques the leading one-loop order approach for its limitations compared to the robust two-loop findings.
Insights from the low-energy axion effective theory could clarify existing ambiguities while aligning with the DFSZ model framework.
Highlighting implications for experimental searches, especially in B → Kμ$^+$þμ$^-$ and ϒ → γ+ invisible decay channels.

Xiyuan et al. (2025) studied this question.

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January 1, 2025Open Access

View Full Paper

Ask AI

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Authors

Analysis reveals minimal model allows enhanced two-loop contributions in B → K+ transitions, suggesting unexplored axionlike effects.

Enhanced two-loop contributions emerge from the minimal model due to suppressed leading-order amplitudes, maximizing at tan β ≳ 5.
The analysis critiques the leading one-loop order approach for its limitations compared to the robust two-loop findings.
Insights from the low-energy axion effective theory could clarify existing ambiguities while aligning with the DFSZ model framework.
Highlighting implications for experimental searches, especially in B → Kμ$^+$þμ$^-$ and ϒ → γ+ invisible decay channels.

Xiyuan et al. (2025) studied this question.

View Full Paper

Ask AI

Bookmark