Question

In: Physics

What are the two conservation laws relevant to particle interactions in the standard model?

What are the two conservation laws relevant to particle interactions in the standard model?

Solutions

Expert Solution

In developing the standard model for particles, certain types of interactions and decays are observed.

The two conservative laws relevent to particle interactions in the standard model are :-

Conservation of Baryon Number:

The law of conservation of baryon number states that the baryon number on the reactants and products side must be equal.A baryon is a particle made up of three quarks. This includes protons, neutrons and their antiparticles, the antineutron and the antiproton. The proton and neutron get a baryon number of +1 while their antiparticle counterparts get a baryon number of -1. All other particles get a baryon number of 0.

Conservation of Lepton Number:

The law of conservation of Lepton number states that the sum of lepton numbers before and after the interaction must be the same. There are three different lepton number: -

The electron-lepton number , the muon-lepton number , and the tau-lepton . In any interaction, each of these quantities must be conserved separately.


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