Revisiting the number-theory dark matter scenario and the weak gravity conjecture

Kazunori Nakayama, Fuminobu Takahashi, Tsutomu T. Yanagida

研究成果: Article査読

7 被引用数 (Scopus)

抄録

We revisit the number-theory dark matter scenario where one of the light chiral fermions required by the anomaly cancellation conditions of U(1)B-L explains dark matter. Focusing on some of the integer B-L charge assignments, we explore a new region of the parameter space where there appear two light fermions and the heavier one becomes a dark matter of mass ≲O(10)keV or O(10)MeV. The dark matter radiatively decays into neutrino and photon, which can explain the tantalizing hint of the 3.55keV X-ray line excess. Interestingly, the other light fermion can erase the AdS vacuum around the neutrino mass scale in a compactification of the standard model to 3D. This will make the standard model consistent with the AdS-WGC statement that stable non-supersymmetric AdS vacua should be absent.

本文言語English
ページ(範囲)218-224
ページ数7
ジャーナルPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
790
DOI
出版ステータスPublished - 2019 3 10

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学

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