粒子与反粒子仍然存在碰撞的机会，因为万有斥力要比电极引力弱得多。
Particles and antiparticles could still collide, however, since gravitational repulsion is much weaker than electrical attraction.
据称，在两个弱作用大质量粒子碰撞时会发生湮灭，并且放出伽马射线，类似费尔米卫星的探测器能够捕捉到这种信号。
These annihilations are thought to occur when two WIMPs collide, generating gamma-rays which can be picked up by detectors such as those on board Fermi.
对这些正电子有一个可能解释，就是它们来自同一种暗物质以正、反物质形式出现的一对粒子的碰撞（物质湮灭），这样的暗物质又被称为“大质量弱相互作用粒子”（WIMP）。
One possible explanation for these positrons is the mutual annihilation of the matter and antimatter forms of a type of dark matter called weakly interacting massive particles, also known as WIMPs.
应用推荐