用时:5min P1 给出不可能组成暗物质的几种东西 Dark matter can't be made of: P2Neutrinos-被推翻的暗物质的可能性 Neutrinos × dark matters Once a prominent possibility But too lightweight “Hot”, velocity comparable to light, too fleet-footed to settle
P3 Cold dark matter-暗物质组成的可能成分 Cold dark matter Move sluggishly Difficulties by alternative hypotheses>problem in explaining the structure Standard Model contains no example Extensions of Standard Model offer many candidates
P4超对称粒子 Supersymmetry Postulate a new family of particles-superpartner New particles more sluggish Most attention-neutralino/boson/other types
Neutralino & Neutrino: various properties, quite distinct P5超对称粒子中的neuttralino Neutralino: hypothesized mass, stability and neutrality) Heavy but the lightest supersymmetric particle Stable(unstable-decay into 2 lighter superparticles ) Zero charge, unaffected by electromagnetic forces
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