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arXiv · hep-ph/9505312

Goldstone Bosons in the Appelquist-Terning ETC Model

Bhashyam Balaji
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Abstract

It is demonstrated that the extended technicolor model proposed recently by Appelquist and Terning has pair of potentially light $U(1)$ Goldstone bosons coupling to ordinary matter with strength $2m_f\over F_π$, where $m_f$ is the mass of the fermion and $F_π \approx 125\,\GeV$. These Goldstone bosons could get a mass if the spontaneously broken $U(1)$ symmetries are also explicitly broken, by physics beyond that specified in the model. An attempt to break these symmetries by embedding the model into a larger gauge group seems to be inadequate. The problem is because there are too many representations and there is a mismatch between the number of condensates and the number of gauge symmetries broken.

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Bhashyam Balaji. 1995-05-15. Goldstone Bosons in the Appelquist-Terning ETC Model. https://doi.org/10.1103/physrevd.51.3969

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