M理论预测了超对称性的存在，超对称性认为所有基本粒子都存在伴粒子，这些伴粒子的名称都很奇特，比如超对称电子（selectrons）和超对称夸克（squarks）等，但到目前为止，科学家们还没有发现这种超对称性伴粒子。

One possibility predicted by M-theory is supersymmetry, an idea that says fundamental particles have heavy – and as yet undiscovered – twins, with curious names such as selectrons and squarks.

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例如，背景粒子和一个与中性伴子碰撞而反冲的原子核相比，前者将造成更多的游离。

For example, background particles tend to produce more ionization than a nucleus recoiling from a neutralino collision.

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