...
首页> 外文期刊>Physical review, D >Sterile neutrino dark matter from generalized CPT-symmetric early-Universe cosmologies
【24h】

Sterile neutrino dark matter from generalized CPT-symmetric early-Universe cosmologies

机译:来自广义CPT对称早期宇宙宇宙的无菌Nutrino暗物质

获取原文
           

摘要

We generalize gravitational particle production in a radiation-dominated C P T -symmetric universe to nonstandard but also C P T -symmetric early-Universe cosmologies. We calculate the mass of a right-handed “sterile” neutrino needed for it to be the cosmological dark matter. Since generically sterile neutrinos mix with the standard model active neutrinos, we use state-of-the-art tools to compute the expected spectrum of gamma rays and high-energy active neutrinos from ultraheavy sterile neutrino dark matter decay. We?demonstrate that the sterile neutrinos are never in thermal equilibrium in the early Universe. We?show that very high-energy Cherenkov telescopes might detect a signal for sterile neutrino lifetimes up to around 10 27 ? ? s , while a signal in high-energy neutrino telescopes such as IceCube could be detectable for lifetimes up to 10 30 ? ? s , offering a better chance of detection across a vast landscape of possible masses.
机译:我们将重力颗粒生产概括为辐射束缚的C p托 - 态宇宙中的非标准,但也是C p T-mymmetric早期宇宙宇宙。 我们计算它是宇宙暗物质所需的右撇子“无菌”中微子的质量。 由于与标准模型活性中微子混合,我们使用最先进的工具来计算来自超大无菌中微子暗物质腐烂的最先进的工具来计算伽马射线和高能量活性中微子的预期谱。 我们展示无菌的中微子在早期宇宙中绝不是热平衡。 我们展示非常高能量的Cherenkov望远镜可能会检测到最高达到107左右的无菌中微子寿命的信号吗? 还 S,虽然诸如iceCube等高能中微子望远镜中的信号可以可检测到10 30的寿命? 还 S,在可能群众的广阔景观中提供更好的探测机会。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号