The Standard Model is extended by a SU(2)L singlet of vector leptoquarks. An additional SU(4) gauge symmetry between right-handed up quarks and right-handed leptons is introduced to render the model renormalizable. The arrangement is made in such a way that no conflict with low energy restrictions is encountered. The SU(2)L singlet mediates interactions between the right-handed leptons and up type quarks for which only moderate low energy restrictions exist.
Comments: 24 pages.
[v1] 31 Mar 2011
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