A-LevelPhysicsParticle physics9702/12 · May/June 2023 · Q401 Mark

A π⁺ meson has a charge of +e, where e is the elementary charge. It consists of an up quark and one other quark. What could be the other quark in the π⁺ meson?

Aanti-down

Banti-up

Cbottom

Dcharm

✓ Correct answer

A: anti-down

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Topic: Particle physics, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2023 Paper 1 Variant 2, question 40.

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