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    Physics A-Level

    Conservation laws in particle interactions

    What Conservation laws in particle interactions means in Physics A-Level, as defined for AQA, OCR.

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    Reference: AQA

    Conservation of charge, energy and momentum are used to check whether a proposed particle reaction is possible.
    AQA · Particles, antiparticles and photons (study guide)
    Charge, lepton number and momentum are conserved in both pair creation and pair annihilation.
    OCR · Nuclear fission and fusion (study guide)

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