Weinberg Angle, Neutron Abundance in BBN, and Lifetime
Fuente:
arXiv
Salvato in:
| Autori principali: | , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2026
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866917308822192128 |
|---|---|
| author | Yang, Cheng Tao Rafelski, Johann |
| author_facet | Yang, Cheng Tao Rafelski, Johann |
| contents | The Big-Bang nucleosynthesis (BBN) initial neutron abundance and the neutron lifetime depend on the magnitude of the Fermi coupling constant $G_F$. When allowing for radiative corrections, $G_F$ depends on the symmetry breaking Weinberg angle $s_\mathrm{W}$, a free parameter in the standard model of particle physics which could have considerable environmental (e.g. cosmological or temperature) dependence. We establish how the value of $s_\mathrm{W}$ influences BBN and neutron lifetime. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_02652 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Weinberg Angle, Neutron Abundance in BBN, and Lifetime Yang, Cheng Tao Rafelski, Johann High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics Nuclear Theory The Big-Bang nucleosynthesis (BBN) initial neutron abundance and the neutron lifetime depend on the magnitude of the Fermi coupling constant $G_F$. When allowing for radiative corrections, $G_F$ depends on the symmetry breaking Weinberg angle $s_\mathrm{W}$, a free parameter in the standard model of particle physics which could have considerable environmental (e.g. cosmological or temperature) dependence. We establish how the value of $s_\mathrm{W}$ influences BBN and neutron lifetime. |
| title | Weinberg Angle, Neutron Abundance in BBN, and Lifetime |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics Nuclear Theory |
| url | https://arxiv.org/abs/2603.02652 |