Approximate gauge symmetry of composite vector bosons

Details Approximate gauge symmetry of composite vector bosons Approximate gauge symmetry of composite vector bosons

2010-06-07

arxiv.org/abs/1006.1319v5

Phys. Rev. D82, 045026 (2010)

Physics

High Energy Physics

High Energy Physics - Phenomenology

Correction of typos. The published version

Scientific paper

It can be shown in a solvable field theory model that the couplings of the composite vector bosons made of a fermion pair approach the gauge couplings in the limit of strong binding. Although this phenomenon may appear accidental and special to the vector boson made of a fermion pair, we extend it to the case of bosons being constituents and find that the same phenomenon occurs in more an intriguing way. The functional formalism not only facilitates computation but also provides us with a better insight into the generating mechanism of approximate gauge symmetry, in particular, how the strong binding and global current conservation conspire to generate such an approximate symmetry. Remarks are made on its possible relevance or irrelevance to electroweak and higher symmetries.

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