| Date | May 2013 | Marks available | 2 | Reference code | 13M.3.HL.TZ1.25 |
| Level | Higher level | Paper | Paper 3 | Time zone | Time zone 1 |
| Command term | Draw | Question number | 25 | Adapted from | N/A |
Question
This question is about hadrons.
The interaction in (a) can also occur via the weak interaction with neutral current mediation producing an up and anti-up quark pair.
Draw a labelled Feynman diagram for this interaction. Time on your diagram should go from left to right.
Markscheme
correct incoming and outgoing particles with correct arrow direction;
Z0 shown correctly;
Allow any consistent labelling for quark pair.
Examiners report
Were reasonably well answered
Syllabus sections
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