Details
The X and Y bosons couple quarks to leptons, allowing violation of the conservation of baryon number and thus permitting proton decay.
An X boson would have the following decay modes:
- X → u + u
- X → e+ + d
where the two decay products in each process have opposite chirality, u is an up quark, d is a down quark and e+ is a positron.
A Y boson would have the following decay modes:
- Y → e+ + u
- Y → d + u
- Y → d + ν
e
where the first decay product in each process has left-handed chirality and the second has right-handed chirality and ν
e is an electron antineutrino.
Similar decay products exist for the other quark-lepton generations
In these reactions, neither the lepton number (L) nor the baryon number (B) is conserved, but B − L is. Different branching ratios between the X boson and its antiparticle (as is the case with the K-meson) would explain baryogenesis.
Read more about this topic: X And Y Bosons
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