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Gauge Invariance, Color-Octet Vector Resonances and Double Technieta Production at the Tevatron

By Alfonso R. Zerwekh and Rogerio Rosenfeld

Abstract

We show that the usual vector meson dominance method does not apply directly to the mixing of a color-octet vector boson (color-octet technirho) with the gluon because of gauge invariance. We propose a gauge invariant method where one works in a physical basis with mass eigenstate fields. As a result, we show that the physical technirho does not couple to two gluons, contrary to the general belief. Consequences for the production of a pair of color-octet, isosinglet technipions (technietas) at Fermilab is analysed by means of a simulation of the signal and background, including kinematical cuts. We find that the signal is too small to be observed.Comment: 14 page

Topics: High Energy Physics - Phenomenology
Publisher: 'Elsevier BV'
Year: 2001
DOI identifier: 10.1016/S0370-2693(01)00222-2
OAI identifier: oai:arXiv.org:hep-ph/0103159

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