A-level Physics (Advancing Physics)/Bosons/Worked Solutions

1. A stationary light source emits single photons at regular intervals. Draw a Feynman diagram to represent this.

2. Write two equations (including a W⁺ boson) which describe positron emission.

$p\to n+W^{+}$

$W^{+}\to \nu +e^{+}$

3. What is the charge on a W^- boson?

-1.6 x 10⁻¹⁹C, since it has to balance the charge on a proton.