Physics A-Level
Weak interaction and beta decay
What Weak interaction and beta decay means in Physics A-Level, as defined for AQA.
Definition of Weak interaction and beta decay
Check what you remember
Read the wording for your board, then hide it and explain Weak interaction and beta decay in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
A free neutron is unstable and undergoes beta-minus decay, in which a down quark changes into an up quark and a W⁻ boson is emitted.
Topics that use Weak interaction and beta decay
- Quarks and antiquarks (AQA A-Level)
Related terms
- Antiquarks
- Baryon number
- Baryons
- Conservation laws in particle decays
- Exchange particles and Feynman diagrams
- Mesons
- Quark properties
- Quarks
Using Weak interaction and beta decay in the exam
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