Speaker
Description
A new estimate of the diffuse supernova neutrino background (DSNB) is presented, for scenarios with different core collapse rates and different distribution of black-hole forming collapses with the progenitor mass. The $\bar \nu_e$ component of the DSNB above 11 MeV of energy can be as large as $\phi \sim 3.7~{\rm cm^{-2} s^{-1}}$, and the contribution of black hole-forming collapses could dominate the flux above $\sim 25$ MeV.
We discuss the potential of detecting the DSNB at SuperK-Gd and JUNO, in about a decade-long period of operation, including realistic neutral-current background processes. The case when results from the two detectors are examined jointly is considered as well. We also examine an example of a future ${\mathcal O}(10)$ kt
slow liquid scintillator detector, and show that there the chances of detecting the DSNB could exceed 99\%. Our results motivate stronger experimental efforts in reducing the lower energy backgrounds at SuperK-Gd.
