Big-bang nucleosynthesis with sub-GeV massive decaying particles
Masahiro Kawasaki, Kazunori Kohri, Takeo Moroi, Kai Murai, Hitoshi Murayama
2020Institutional Repositories DataBase (IRDB)34 citations
Abstract
We consider the effects of the injections of energetic photon and electron (or positron) on the big-bang nucleosynthesis. We study the photodissociation of light elements in the early Universe paying particular attention to the case that the injection energy is sub-GeV and derive upper bounds on the primordial abundances of the massive decaying particle as a function of its lifetime. We also discuss a solution of the $^7$Li problem in this framework.
Topics & Concepts
PhysicsBig Bang nucleosynthesisNucleosynthesisUniversePhotonCosmologyBig Bang (financial markets)Nuclear physicsAstrophysicsNuclear reactionQuantum mechanicsFinanceEconomicsCosmology and Gravitation TheoriesParticle physics theoretical and experimental studiesDark Matter and Cosmic Phenomena