Boson x rd6/17/2023 ![]() Where the two decay products in each process have opposite chirality,Ī Y boson would have the following three decay modes: : 442 Since some grand unified theories such as the Georgi–Glashow model predict a half-life less than this, then the existence of X and Y bosons, as formulated by this particular model, remain hypothetical.Īn X boson would have the following two decay modes: : 442 However, the Super-Kamiokande has put a lower bound on the proton's half-life as around 10 34 years. Significantly, the X and Y bosons couple quarks (constituents of protons and others) to leptons (such as positrons), allowing violation of the conservation of baryon number thus permitting proton decay. Since the X and Y boson mediate the grand unified force, they would have unusual high mass, which requires more energy to create than the reach of any current particle collider experiment. ![]() In particle physics, the X and Y bosons (sometimes collectively called " X bosons" : 437 ) are hypothetical elementary particles analogous to the W and Z bosons, but corresponding to a unified force predicted by the Georgi–Glashow model, a grand unified theory (GUT). ![]() Y: two quarks, or one antiquark and one charged antilepton, or one antiquark and one antineutrino X: two quarks, or one antiquark and one charged antilepton For mesons with the same names, see XYZ particle. This article is about bosons of a hypothetical new interaction.
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