Applications of conservation laws (AQA A-Level Physics): Flashcards

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Applications of conservation laws
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Quantities conserved in all particle interactions

Energy, momentum, charge, baryon no., lepton nos.

Type of interaction where strangeness is conserved

Strong interactions

Strangeness conservation in weak interactions

Not conserved

Type of interaction causing beta decay

Weak interaction

Products of neutron beta-minus decay

pp, ee^-, νˉe\bar{\nu}_e

Quark change in beta-minus decay

dduu

WW^- boson decay products in beta-minus

ee^- and νˉe\bar{\nu}_e

Quark change in beta-plus decay

uudd

W+W^+ boson decay products in beta-plus

e+e^+ and νe\nu_e

Diagrams used to represent weak interactions

Feynman diagrams

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