Dark Glueballs and their Ultralight Axions

Autor:	Halverson, James, Nelson, Brent D., Ruehle, Fabian, Salinas, Gustavo
Rok vydání:	2018
Předmět:	High Energy Physics - Phenomenology High Energy Physics - Theory
Zdroj:	Phys. Rev. D 98, 043502 (2018)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.98.043502
Popis:	Dark gauge sectors and axions are well-motivated in string theory. We demonstrate that if a confining gauge sector gives rise to dark glueballs that are a fraction of the dark matter, and the associated axion has a decay constant near the string scale, then this axion is ultralight and naturally realizes the fuzzy dark matter scenario with a modest tuning of a temperature ratio. Astrophysical observations constrain the size of the glueball component relative to the axionic component, while electric dipole moments constrain mixing with the QCD axion. Comment: 8 pages, 2 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1805.06011 Zobrazit plný text záznamu View this record from Arxiv