2023/03/24(Fri)
11:00 -12:00
五樓第一會議室 5F, 1st Meeting Room
視訊演講 Video Seminar [ Meeting Link / ID: 2517 504 9968 / Password: FridaySeminar23 ]
Title
Boosted dark matter from primordial black holes produced in a first-order phase transition
Speaker
曾柏彥先生 (國立清華大學) Mr. Po-Yen Tseng (National Tsing Hua University)Abstract
During a cosmological first-order phase transition in a dark sector, fermion dark matter particles χ can form macroscopic Fermi balls that collapse to primordial black holes (PBHs) under certain conditions. The evaporation of the PBHs produces a boosted χ flux, which may be detectable if χ couples to visible matter. We consider the interaction of χ with electrons, and calculate signals of the dark matter flux in the XENON1T, XENONnT, Super-Kamiokande and Hyper-Kamiokande experiments. A correlated gravitational wave signal from the phase transition can be observed at THEIA and μAres. An amount of dark radiation measurable by CMB-S4 is an epiphenomenon of the phase transition.
Language
演講語言 (Language): in English
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