新标标量从共振与软发射引起的超新星约束
高能物理 - 唯象学
2025-11-07 v2
摘要
我们研究了超新星冷却对混合 Higgs 质子或仅耦合于夸克/轻子的新轻标标量的约束。我们指出，在所有这些情况下，质量小于超新星核心等离子体频率的标标量都通过与光子时空纵向自由度的共振混合而有效产生。 resulting bounds are free from uncertainties associated to the rate of emission of the scalar in nucleon-nucleon scatterings, which would otherwise badly affect the Higgs-mixed and nucleophilic scenarios. Heavier scalars that mix with the Higgs or couple only to nucleons are mostly produced by nucleon bremsstrahlung, and we obtain a conservative approximation for the corresponding rate using a soft theorem. We also analyse the impact of different supernova profiles, nucleon degeneracy, trapping and scalar decays on the constraints.
引用
@article{arxiv.2410.17347,
title = {Supernova bounds on new scalars from resonant and soft emission},
author = {Edward Hardy and Anton Sokolov and Henry Stubbs},
journal= {arXiv preprint arXiv:2410.17347},
year = {2025}
}
备注
23 pages plus appendices, version published in JHEP