Speaker
Qiuyue Liang
Description
The majoron is a well-motivated light (pseudo-Nambu-Goldstone) boson associated with the spon- taneous breaking of a global lepton-number symmetry. In this letter, we relate the spontaneous breaking scale and its soft-breaking mass by requiring that the majoron is the main component of the dark matter. An electromagnetic-anomalous coupling can be induced by minimally modi- fying the original majoron model, surprisingly, predicting a parameter region that largely overlaps with the QCD-axion dark matter band. Thus, we expect that axion search experiments meet the ma joron.
