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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Accesso online: | https://arxiv.org/abs/2508.05741 |
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| _version_ | 1866911097656705024 |
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| author | Cao, Zehua Hill, Richard J. Plestid, Ryan Griend, Peter Vander |
| author_facet | Cao, Zehua Hill, Richard J. Plestid, Ryan Griend, Peter Vander |
| contents | Details of the two-loop analysis of long-distance QED radiative corrections to neutron beta decay are presented. Explicit expressions are given for hard, jet, and soft functions appearing in the factorization formula that describes the small mass/large energy limit. Power corrections, cancellation of singularities in the small mass expansion, renormalization scheme dependence, and bound state effects are discussed. The results impact the determination of $|V_{ud}|$ from the measured neutron lifetime. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_05741 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Factorization and resummation of QED radiative corrections for neutron beta decay Cao, Zehua Hill, Richard J. Plestid, Ryan Griend, Peter Vander High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Theory Details of the two-loop analysis of long-distance QED radiative corrections to neutron beta decay are presented. Explicit expressions are given for hard, jet, and soft functions appearing in the factorization formula that describes the small mass/large energy limit. Power corrections, cancellation of singularities in the small mass expansion, renormalization scheme dependence, and bound state effects are discussed. The results impact the determination of $|V_{ud}|$ from the measured neutron lifetime. |
| title | Factorization and resummation of QED radiative corrections for neutron beta decay |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2508.05741 |