Axion-like Dark Matter from the Type-II Seesaw Mechanism

Autor:	Chao, Wei, Jin, Mingjie, Li, Hai-Jun, Peng, Ying-Quan
Rok vydání:	2022
Předmět:	High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
Popis:	Although axion-like particles (ALPs) are popular dark matter candidates, their mass generation mechanisms as well as cosmic thermal evolutions are still unclear. In this letter, we propose a new mass generation mechanism of ALP during the electroweak phase transition in the presence of the type-II seesaw mechanism. As ALP gets mass uniquely at the electroweak scale, there is a cutoff scale on the ALP oscillation temperature irrelevant to the specific mass of ALP, which is a distinctive feature of this scenario. The ALP couples to the active neutrinos, leaving the matter effect of neutrino oscillations in a dense ALP environment as a smoking gun. As a by-product, the recent $W$-boson mass anomaly observed by the CDF collaboration is also quoted by the TeV-scale type-II seesaw. We explain three kinds of new physics phenomena are with one stroke. Comment: 7+9 pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2210.13233 Zobrazit plný text záznamu View this record from Arxiv