We estimate the Diffuse Supernova Neutrino Background ( DSNB ) using the simulation results for neutron star-forming and black hole-forming stellar collapses from the Garching group .
Scenarios with different core collapse rates and different distribution of black-hole forming collapses with the progenitor mass are discussed .
The \mathrel { { \bar { \nu } } _ { e } } component of the DSNB above 11 MeV of energy is found to be \phi \simeq ( 1.4 - 3.7 ) ~ { } { cm ^ { -2 } s ^ { -1 } } ; the contribution of black hole-forming collapses could dominate the flux above \sim 25 MeV .
We calculate the potential of detecting the DSNB at SuperK-Gd and JUNO , in about a decade-long period of operation .
We find that , in our model , the odds of obtaining a significant excess above the background could be as high as \sim 52 % in SuperK-Gd and \sim 92 % in JUNO .
The potential when the two experimental results are examined jointly is discussed as well .
We also consider an example of a future { \mathcal { O } } ( 10 ) kt slow liquid scintillator detector , and show that there the chances of detection could exceed 99 % .
Our results motivate experimental efforts in reducing the backgrounds due to neutral current scattering of atmospheric neutrinos in SuperK-Gd .