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.

4. Read Richard Feynman's excellent book, "QED - the Strange Theory of Light and Matter", ISBN 978-0-140-12505-4.

Don't look here. I can't read a book for you. Visit your library, bookshop, or whatever.

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