Meeting of High Energy Physics, Cosmology and High Energy Astrophysics

CMB spectral $\mu$-distortion during phase transition in the Bound Dark Matter (BDM) model

Nov 26, 2020, 1:30 PM

30m

Session: Dark Matter and Beyond Standard Model Searches Dark Matter and Beyond Standard Model Searches

Speaker

Raúl Henríquez (Universidad de El Salvador)

Description

Spectral distortions of the CMB provide independent and complementary probes to study energy injection processes in the early universe. In this work was obtained the spectral $\mu$-distortion associated with phase transition of the dark particles in the BDM model. Several scenarios were simulated numerically with parameters: $a_{c} = [4.9 \times 10^{-7}, 3.3 \times 10^{-6}]$, $ f_{eff} = [0,1]$, $v_{c}=[0,0.71]$, $f_{x}=$ $ 10^{-2}$, $ 10^{-3}$, $10^{-4}$, $10^{-5}$ and $10^{-6}$. Some constrictions were obtained for FIRAS sensivity for $ a_{c} < 1.68 \times 10^{-6} $ ($ f_{x} = 10^{-2}$, $ f_{eff} = 0.5 $) and for PIXIE sensivity $ a_{c} > 1 \times 10^{-6} $ ($ f_{x} = 10^{-5} $, $ f_{eff} = 0.5 $).