Hyperon neutrinoless double beta decays in chiral perturbation theory
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866912805148426240 |
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| author | Zhao, Zi-Ying Liang, Ze-Rui Guo, Feng-Kun He, Li-Ping Yao, De-Liang |
| author_facet | Zhao, Zi-Ying Liang, Ze-Rui Guo, Feng-Kun He, Li-Ping Yao, De-Liang |
| contents | We study the neutrinoless double beta decays of spin-1/2 hyperons, $B_1^- \to B_2^+ \ell^- \ell^-$ with $B_1^-\in \{Σ^-,Ξ^-\}$ and $B_2^+\in\{p,Σ^+\}$, which violate lepton number by two units. The decay amplitudes are computed within covariant baryon chiral perturbation theory at the one-loop level. Dalitz plots of the squared amplitude for six physical decay processes are presented in this proceeding, while a detailed numerical analysis will be presented in a forthcoming publication. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_02990 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Hyperon neutrinoless double beta decays in chiral perturbation theory Zhao, Zi-Ying Liang, Ze-Rui Guo, Feng-Kun He, Li-Ping Yao, De-Liang High Energy Physics - Phenomenology We study the neutrinoless double beta decays of spin-1/2 hyperons, $B_1^- \to B_2^+ \ell^- \ell^-$ with $B_1^-\in \{Σ^-,Ξ^-\}$ and $B_2^+\in\{p,Σ^+\}$, which violate lepton number by two units. The decay amplitudes are computed within covariant baryon chiral perturbation theory at the one-loop level. Dalitz plots of the squared amplitude for six physical decay processes are presented in this proceeding, while a detailed numerical analysis will be presented in a forthcoming publication. |
| title | Hyperon neutrinoless double beta decays in chiral perturbation theory |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2601.02990 |