Yes, during the decay of the top quark, the weak force is indeed the dominant force involved. The weak force is one of the four fundamental forces in nature, along with gravity, electromagnetism, and the strong force. It is responsible for certain types of particle decays, including the decay of the top quark.
The top quark is the heaviest known elementary particle, and it has a very short lifetime before it decays. The decay of the top quark primarily proceeds through the weak interaction, specifically through a process known as the weak decay or weak force-mediated decay.
In the weak decay of the top quark, a W boson is involved, which carries the weak force. The top quark decays predominantly into a W boson and a bottom quark. The W boson, being the mediator of the weak force, plays a crucial role in this decay process.
Compared to the other fundamental forces, the weak force is relatively weaker in terms of its strength. The strong force is the strongest among the four fundamental forces and is responsible for holding quarks together within the top quark. However, during the decay process, the weak force becomes the dominant force as it governs the transformation of the top quark into other particles.