Probing self-interacting ultra-high-energy neutrinos with cosmic 21-cm signal

Documentdetail

ID kaart

oai:arXiv.org:2406.19279

Onderwerp

High Energy Physics - Phenomenolog... Astrophysics - Cosmology and Nonga...

Auteur

Dhuria, Mansi Teli, Bishnu Gupta

Categorie

wetenschappen: astrofysica

Jaar

2024

vermelding datum

03-07-2024

Trefwoorden

signal 21-cm cosmic neutrino neutrinos

Metriek

Beschrijving

In this study, we investigate the constraints on secret self-interactions of neutrinos by examining the impact of radiative scattering of ultra-high-energy (UHE) neutrinos.

These neutrinos are produced from the decay of superheavy dark matter and interact with the cosmic neutrino background (C$\nu$B).

We explore how these interactions influence the 21-cm hydrogen signal during the cosmic dark ages and cosmic dawn, periods relatively free from astrophysical uncertainties, providing a clearer signal for studying non-standard neutrino interactions.

By analyzing the global brightness temperature measurements, we constrain the scattering cross-section of UHE self-interacting neutrinos, determining the coupling constant $g$ to be within $\sim 10^{-4}$ to $\sim 10^{-3}$ for neutrino energies in the PeV to EeV range.

Interestingly, these constraints are more competitive than those from existing astrophysical and collider experiments.

As future 21-cm experiments focus on measuring brightness temperature across a wide range of redshifts from the cosmic dark ages to reionization, using the epoch of 21-cm to probe neutrino properties could provide crucial insights into dark matter and neutrino physics.

;Comment: 13 pages, 5 figures

Dhuria, Mansi,Teli, Bishnu Gupta, 2024, Probing self-interacting ultra-high-energy neutrinos with cosmic 21-cm signal