The top (t) quark.

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…showed last 75 words of 786 total…transformed into a bottom quark (stage six.) In stage seven, the new b quark and b anti quark rebind away from the emitted W bosons. An electron and neutrino emerge from the virtual W- boson in stage eight, and a u quark and d anti quark emerge from the virtual W+ boson. In stage nine, the b quark and anti quark , electron, neutrino, u quark and d anti quark all move away from one another.