New Probes of the Relic Neutrino Background

by Prof. Bhupal Dev (Washington University in St. Louis)

Thursday 25 Sept 2025, 11:00 → 12:30 Asia/Seoul

Zoom

Title: New Probes of the Relic Neutrino Background

Speaker: Bhupal Dev (Washington University in St. Louis)

Abstract:

The cosmic neutrino background (CνB) is a firm prediction of the Big Bang Cosmology, but it has never been detected. Although the CνB has the largest flux among all known sources of neutrinos, its small kinetic energy makes any direct detection extremely challenging. We propose new indirect probes of CνB using their (off-)resonant scattering with high-

energy neutrinos, both of Standard Model and of new physics origin. In particular, we show that heavy dark matter decaying to high-energy neutrinos can be an effective probe of CνB clustering. 

 

Zoom link: 

https://kias-re-kr.zoom.us/j/83575669938?pwd=L4rdcPiWeJI80K7zuuDwPljYwcsZtq.1

Meeting ID: 835 7566 9938
Passcode: 948626