Factorization and resummation of QED radiative corrections for neutron beta decay
Fuente:
arXiv
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866911097656705024 |
|---|---|
| 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 |