Intermediate Scale Accidental Axion and ALPs

Abstract

We discuss the problem of constructing models containing an axion and axion-like particles, motivated by astrophysical observations, with decay constants at the intermediate scale ranging from $10^9$GeV to $10^{13}$GeV. We present examples in which the axion and axion-like particles arise accidentally as pseudo Nambu-Goldstone bosons of automatic global chiral symmetries, in models having exact discrete symmetries.

arXiv comment4 pages. To appear in the Proceedings of the 10th Patras Workshop on Axions, WIMPs and WISPs, CERN, 29 June - 04 July 2014

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