Artículos de revistas
Electroweak symmetric dark matter balls
Fecha
2019-09-02Registro en:
Journal Of High Energy Physics. New York: Springer, n. 9, 47 p., 2019.
1029-8479
10.1007/JHEP09(2019)011
WOS:000489138800001
Autor
Universidade Estadual Paulista (Unesp)
Univ Wisconsin
Institución
Resumen
In the simple Higgs-portal dark matter model with a conserved dark matter number, we show that there exists a non-topological soliton state of dark matter. This state has smaller energy per dark matter number than a free particle state and has its interior in the electroweak symmetric vacuum. It could be produced in the early universe from first-order electroweak phase transition and contribute most of dark matter. This electroweak symmetric dark matter ball is a novel macroscopic dark matter candidate with an energy density of the electroweak scale and a mass of 1 gram or above. Because of its electroweak-symmetric interior, the dark matter ball has a large geometric scattering cross section off a nucleon or a nucleus. Dark matter and neutrino experiments with a large-size detector like Xenon1T, BOREXINO and JUNO have great potential to discover electroweak symmetric dark matter balls. We also discuss the formation of bound states of a dark matter ball and ordinary matter.