TY - JOUR
T1 - Diffuse neutrinos from luminous and dark supernovae
T2 - Prospects for upcoming detectors at the (10) kt scale
AU - Priya, Alankrita
AU - Lunardini, Cecilia
N1 - Funding Information:
We thank H. T. Janka and A. Summa for providing the results of the numerical simulations of the Garching group, and for useful discussions. We are also grateful to H. Kunxian, M. Wurm and J. Hidaka for informative comments. We acknowledge support from the Department of Energy award DESC0015406.
Publisher Copyright:
© 2017 IOP Publishing Ltd and Sissa Medialab.
PY - 2017/11/20
Y1 - 2017/11/20
N2 - 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 distributions of black-hole forming collapses with the progenitor mass are discussed, and the uncertainty on the cosmological rate of collapses is included. The e component of the DSNB above 11 MeV of energy is found to be φ (1.4-3.7) cm-2 s-1; the contribution of black hole-forming collapses could dominate the flux above ∼ 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, it is likely that a significant excess above the background will be obtained at JUNO, while detection will be more difficult at SuperK-Gd. The potential when the two experimental results are examined jointly is discussed as well. We also consider an example of a future (10) kt slow liquid scintillator detector, and show that there the odds of detection are very good. Our results motivate experimental efforts in reducing the backgrounds due to neutral current scattering of atmospheric neutrinos in SuperK-Gd.
AB - 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 distributions of black-hole forming collapses with the progenitor mass are discussed, and the uncertainty on the cosmological rate of collapses is included. The e component of the DSNB above 11 MeV of energy is found to be φ (1.4-3.7) cm-2 s-1; the contribution of black hole-forming collapses could dominate the flux above ∼ 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, it is likely that a significant excess above the background will be obtained at JUNO, while detection will be more difficult at SuperK-Gd. The potential when the two experimental results are examined jointly is discussed as well. We also consider an example of a future (10) kt slow liquid scintillator detector, and show that there the odds of detection are very good. Our results motivate experimental efforts in reducing the backgrounds due to neutral current scattering of atmospheric neutrinos in SuperK-Gd.
KW - core-collapse supernovas
KW - neutrino detectors
KW - supernova neutrinos
UR - http://www.scopus.com/inward/record.url?scp=85039448751&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85039448751&partnerID=8YFLogxK
U2 - 10.1088/1475-7516/2017/11/031
DO - 10.1088/1475-7516/2017/11/031
M3 - Article
AN - SCOPUS:85039448751
SN - 1475-7516
VL - 2017
JO - Journal of Cosmology and Astroparticle Physics
JF - Journal of Cosmology and Astroparticle Physics
IS - 11
M1 - 031
ER -