Q14 · 2022 · Paper 1Simple familiar1 mark
QUESTION 14
Which Feynman diagram correctly depicts neutron decay?
WORKED SOLUTION
1 markAnswer C
ANSWER
C
Worked solution
In beta-minus decay a down quark changes to an up quark by emitting a , which then decays to an electron and an electron antineutrino. Option C shows this.
Selects option C.
Worked explanation by QCE Vault; correct option verified against the QCAA answer key.