期刊
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
卷 -, 期 12, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1475-7516/2022/12/024
关键词
particle physics- cosmology connection; core-collapse supernovae; white and brown dwarfs
资金
- European Union [101002846]
- Initiative Physique des Infinis (IPI)
- Idex SUPER at Sorbonne Universite
- U.S. Department of Energy [DE-SC0017987]
- Fermilab Intensity Frontier Fellowship
- National Natural Science Foundation of China [12175039]
- Fundamental Research Funds for the Central Universities
- Jiangsu Shuangchuang (Mass Innovation and Entrepreneurship) Talent Program [JSSCBS20210144]
- European Research Council (ERC) [101002846] Funding Source: European Research Council (ERC)
In this study, improved stellar luminosity limits on a light CP-even scalar field, which mixes with the Standard Model Higgs boson, are derived. The study includes the geometric effects for the decay and absorption of the scalar particles within the stellar interior. The updated astrophysical constraints can exclude a broad range of scalar masses and mixing angles.
We derive improved stellar luminosity limits on a generic light CP-even scalar field S mixing with the Standard Model (SM) Higgs boson from the supernova SN1987A, the Sun, red giants (RGs) and white dwarfs (WDs). For the first time, we include the geometric effects for the decay and absorption of S particles in the stellar interior. For SN1987A and the Sun, we also take into account the detailed stellar profiles. We find that a broad range of the scalar mass and mixing angle can be excluded by our updated astrophysical constraints. For instance, SN1987A excludes 1.0 x 10-7 < sin 0 < 3.0 x 10-5 and scalar mass up to 219 MeV, which covers the cosmological blind spot with a high reheating temperature. The updated solar limit excludes the mixing angle in the range of 1.5 x 10-12 < sin 0 < 1, with scalar mass up to 45 keV. The RG and WD limits are updated to 5.3 x 10-13 < sin 0 < 0.39 and 2.8 x 10-18 < sin 0 < 1.8 x 10-4, with scalar mass up to 392 keV and 290 keV, respectively.
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