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arXiv · 1709.08929

On the $ZH\eta$ vertex in the simplest Little Higgs Model

Shi-Ping He·Ying-nan Mao·Chen Zhang·Shou-hua Zhu
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Abstract

The issue of deriving $ZH\eta$ vertex in the simplest Little Higgs (SLH) model is revisited. Special attention is paid to the treatment of non-canonically-normalized scalar kinetic matrix and vector-scalar two-point transitions. We elucidate a general procedure to diagonalize a general vector-scalar system in gauge theories and apply it to the case of SLH. The resultant $ZH\eta$ vertex is found to be different from those which have already existed in the literature for a long time. We also present an understanding of this issue from an effective field theory viewpoint.

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Shi-Ping He, Ying-nan Mao, Chen Zhang, Shou-hua Zhu. 2017-09-26. On the $ZH\eta$ vertex in the simplest Little Higgs Model. https://doi.org/10.1103/physrevd.97.075005

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