- #1
arivero
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This is a companion question to https://www.physicsforums.com/threads/why-su-3-xsu-2-xu-1.884004/
Of course the Higgs mechanism over the standard model produces this low-energy group, SU(3)xU(1), which acts on Dirac fermions (this is, no Left-Right asymmetry anymore).
Is there some reason, beyond experimental observation, to need this group particularly, and the precise way it acts? Given SU(3)xSU(2)xU(1), are we already forced to choose a Higgs mechanism that hides the chiral (axial?) part of the electroweak force?
Of course the Higgs mechanism over the standard model produces this low-energy group, SU(3)xU(1), which acts on Dirac fermions (this is, no Left-Right asymmetry anymore).
Is there some reason, beyond experimental observation, to need this group particularly, and the precise way it acts? Given SU(3)xSU(2)xU(1), are we already forced to choose a Higgs mechanism that hides the chiral (axial?) part of the electroweak force?