Observational constraints on secret neutrino interactions from big bang nucleosynthesis
文献类型：期刊论文
| 作者 | Ohlsson, T; Huang GY(黄国远); Zhou S(周顺); Huang, GY; Zhou, S |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2018 |
| 卷号 | 97期号:7页码:75009 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.97.075009 |
| 文献子类 | Article |
| 英文摘要 | We investigate possible interactions between neutrinos and massive scalar bosons via g(phi)(nu) over bar nu phi (or massive vector bosons via g(V)(nu) over bar gamma(mu)nu V-mu) and explore the allowed parameter space of the coupling constant g phi (or g(V)) and the scalar (or vector) boson mass m(phi) (or m(V)) by requiring that these secret neutrino interactions (SNIs) should not spoil the success of big bang nucleosynthesis (BBN). Incorporating the SNIs into the evolution of the early Universe in the BBN era, we numerically solve the Boltzmann equations and compare the predictions for the abundances of light elements with observations. It turns out that the constraint on g(phi) and m(phi) in the scalar-boson case is rather weak, due to a small number of degrees of freedom (d.o.f.). However, in the vector-boson case, the most stringent bound on the coupling g(V) less than or similar to 6 x 10(-10) at 95% confidence level is obtained for m(V) similar or equal to 1 MeV, while the bound becomes much weaker g(V) less than or similar to 8 x 10(-6) for smaller masses m(V) less than or similar to 10(-4) MeV. Moreover, we discuss in some detail how the SNIs affect the cosmological evolution and the abundances of the lightest elements. |
| 电子版国际标准刊号 | 2470-0029 |
| WOS关键词 | TRIPLET MAJORON MODEL ; BROKEN LEPTON NUMBER ; HIGH-TEMPERATURES ; EARLY UNIVERSE ; ELEMENTS ; COSMOLOGY ; MASS ; SPECTRA ; PHYSICS ; DECAY |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000429221900001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/285793]  |
| 专题 | 高能物理研究所_理论物理室 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Ohlsson, T,Huang GY,Zhou S,et al. Observational constraints on secret neutrino interactions from big bang nucleosynthesis[J]. PHYSICAL REVIEW D,2018,97(7):75009. |
| APA | Ohlsson, T,黄国远,周顺,Huang, GY,&Zhou, S.(2018).Observational constraints on secret neutrino interactions from big bang nucleosynthesis.PHYSICAL REVIEW D,97(7),75009. |
| MLA | Ohlsson, T,et al."Observational constraints on secret neutrino interactions from big bang nucleosynthesis".PHYSICAL REVIEW D 97.7(2018):75009. |
入库方式： OAI收割
来源：高能物理研究所
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