Abstract
Recently the interest in the axion has enhanced since it is a good candidate for cold dark matter. In this paper, we present an invisible-axion model in the framework of local SUSYSU(3) ⊗SU(2) ⊗U(1). After setting theU(1)PQ symmetry-breaking scalefa to be the geometric hierarchy mass scale, a narrow mass window for the axion is obtained. This result fits the cosmological constraints quite well. Several possible ways of searching for axions are discussed too.
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