Pseudo-Nambu-Goldstone dark matter from non-Abelian gauge symmetry

Hajime Otsuka, Takashi Shimomura, Koji Tsumura, Yoshiki Uchida, Naoki Yamatsu

研究成果: ジャーナルへの寄稿学術誌査読

4 被引用数 (Scopus)


We propose a pseudo-Nambu-Goldstone boson (pNGB) dark matter (DM) model based on an additional non-Abelian gauge symmetry SU(2)D. The gauge symmetry SU(2)D is spontaneously broken to a global custodial symmetry U(1)V via the nonvanishing vacuum expectation values of SU(2)D doublet and triplet scalar fields. Due to the exact global symmetry U(1)V, the lightest U(1)V charged particle becomes stable. We assume that the lightest charged particle in the model is the charged complex pNGB, which we regard as DM. It avoids the strong constraints from current DM direct detection experiments due to the property of NGB. We find that the measured energy density of DM can be reproduced when the DM mass is larger than the half of the Higgs mass, where the lower limit generally comes from the constraint of DM invisible decay and the upper limit from DM direct detection experiments depends on the model parameters.

ジャーナルPhysical Review D
出版ステータス出版済み - 12月 1 2022

!!!All Science Journal Classification (ASJC) codes

  • 核物理学および高エネルギー物理学


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