Matter and antimatter in the universe
Matter and antimatter in the universe
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DOI：
10.1088/1367-2630/14/9/095012
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发表时间：
2012-09-17
影响因子：
3.3
通讯作者：
Shaposhnikov, Mikhail
中科院分区：
文献类型：
--
作者：
Canetti, Laurent;Drewes, Marco;Shaposhnikov, Mikhail
我们回顾了早期宇宙中物质-反物质不对称的观测证据，这导致了我们今天观察到的残余物质密度。我们还讨论了当今宇宙中反物质存在的界限，包括宇宙中微子背景中大轻子不对称的可能性。我们简要回顾了重子生成的理论框架，动态生成的物质反物质不对称，可以发生。作为一个例子，我们讨论了一个可检验的最小粒子物理模型，同时解释了宇宙的重子不对称性，中微子振荡和暗物质。
We review observational evidence for a matter-antimatter asymmetry in the early universe, which leads to the remnant matter density we observe today. We also discuss bounds on the presence of antimatter in the present-day universe, including the possibility of a large lepton asymmetry in the cosmic neutrino background. We briefly review the theoretical framework within which baryogenesis, the dynamical generation of a matter-antimatter asymmetry, can occur. As an example, we discuss a testable minimal particle physics model that simultaneously explains the baryon asymmetry of the universe, neutrino oscillations and dark matter.