\b[Allowed.] A single $t$-channel <W boson> mediates the <weak charged current> transitions $u\to d$ and $\bar c\to\bar s$. The amplitude is proportional to the <Cabibbo-Kobayashi-Maskawa matrix> product $V_{ud}V_{cs}^*$.

Solution

Past exam of the mathematics course of the University of Cambridge / 2019 / iii / Paper 305 / 3 / a / ii / Solution

 Solution

ID: past-exam-of-the-mathematics-course-of-the-university-of-cambridge/2019/iii/paper-305/3/a/ii/solution