تقرير
Constraints on sterile neutrinos and the cosmological tensions
| العنوان: | Constraints on sterile neutrinos and the cosmological tensions |
|---|---|
| المؤلفون: | Pan, Supriya, Seto, Osamu, Takahashi, Tomo, Toda, Yo |
| سنة النشر: | 2023 |
| المجموعة: | Astrophysics High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Phenomenology |
| الوصف: | We investigate cosmological bounds on sterile neutrino masses in the light of the Hubble and $S_8$ tensions. We argue that non-zero masses for sterile neutrinos are inferred at 2$\sigma$ level in some extended models such as varying dark energy equation of state, when a direct measurement of the Hubble constant $H_0$ and weak lensing measurement of dark energy survey (DES) are taken into account. Furthermore, the Hubble and $S_8$ tensions are also reduced in such a framework. We also consider the case where a non-flat Universe is allowed and show that a slightly open Universe may be favored in models with sterile neutrinos in the context of the cosmological tensions. Comment: 22 pages, 8 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2312.15435 |
| رقم الأكسشن: | edsarx.2312.15435 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |