Despite its great success in describing fundamental interactions in nature and the evolution of the Universe,the standard model(SM)of elementary particles and cosmology is currently facing quite a number of challenges...Despite its great success in describing fundamental interactions in nature and the evolution of the Universe,the standard model(SM)of elementary particles and cosmology is currently facing quite a number of challenges.Among them,the most important ones are the origin of neutrino masses,the matter-antimatter asymmetry and the existence of dark matter.During the past few decades,tremendous efforts have been devoted to solving all these challenges in a consistent and unified theoretical framework,which extends the symmetries and particle content of the SM.In a class of models with a continuous global symmetry broken spontaneously,an axion-like particle(ALP)arises naturally,serving as a possible candidate for dark matter and leading to rich phenomena for the ongoing and forthcoming experiments.展开更多
文摘Despite its great success in describing fundamental interactions in nature and the evolution of the Universe,the standard model(SM)of elementary particles and cosmology is currently facing quite a number of challenges.Among them,the most important ones are the origin of neutrino masses,the matter-antimatter asymmetry and the existence of dark matter.During the past few decades,tremendous efforts have been devoted to solving all these challenges in a consistent and unified theoretical framework,which extends the symmetries and particle content of the SM.In a class of models with a continuous global symmetry broken spontaneously,an axion-like particle(ALP)arises naturally,serving as a possible candidate for dark matter and leading to rich phenomena for the ongoing and forthcoming experiments.
