Search for new physics in $B \to K ππγ$ with Belle II data
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866910176461717504 |
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| author | Saha, Sahil |
| author_facet | Saha, Sahil |
| contents | The measurement of the time-dependent CP-asymmetry of $B^0 \to K_S^0 π^+ π^- γ$ decays is sensitive to contributions from physics beyond the Standard Model. To translate this measurement into a constraint on new physics, it is necessary to distinguish between decay modes that contribute to the final state via a kaonic resonance that is a CP eigenstate, and those that proceed through non-CP eigenstates. This requires an amplitude analysis of the $B \to K_{res} γ\to K π^+ π^- γ$ decay, that is discussed in this article. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_26315 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Search for new physics in $B \to K ππγ$ with Belle II data Saha, Sahil High Energy Physics - Experiment The measurement of the time-dependent CP-asymmetry of $B^0 \to K_S^0 π^+ π^- γ$ decays is sensitive to contributions from physics beyond the Standard Model. To translate this measurement into a constraint on new physics, it is necessary to distinguish between decay modes that contribute to the final state via a kaonic resonance that is a CP eigenstate, and those that proceed through non-CP eigenstates. This requires an amplitude analysis of the $B \to K_{res} γ\to K π^+ π^- γ$ decay, that is discussed in this article. |
| title | Search for new physics in $B \to K ππγ$ with Belle II data |
| topic | High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2604.26315 |