A few years ago H. Morales and the author introduced a type of generalizedderivative that contained both vector and scalar boson fields. Here it is shownhow to construct a full-fledged generalized Yang-Mills theory through theintroduction of "extended field" multiplets. These are mixed fields thatinclude both a vector and a scalar part. It is shown how the standard model ofhigh energy physics appears naturally in a Yang-Mills theory that uses extendedfield multiplets through two spontaneous symmetry breakings, one due to the VEVof a scalar field and another to the VEV of a vector field.
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