X and Y bosons
|Mass||≈ 1015 GeV/c2|
|Decays into||X: two quarks, or one antiquark and one charged antilepton
Y: two quarks, or one antiquark and one charged antilepton, or one antiquark and one antineutrino
|Electric charge||X: +4⁄3 e
Y: +1⁄3 e
|Color charge||triplet or antitriplet|
|Weak isospin projection||X: +1⁄2
|B − L||2⁄3|
In particle physics, the X and Y bosons (sometimes collectively called "X bosons") are hypothetical elementary particles analogous to the W and Z bosons, but corresponding to a new type of force predicted by the Georgi–Glashow model, a grand unified theory.
- Y → e+ + u
- Y → d + u
- Y → d + ν
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.
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