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Possibility of Detecting the Diffuse Supernovae Neutrino Background by Using a Liquid Scintillator
New Phys.: Sae Mulli 2019; 69: 707~713
Published online July 31, 2019;
© 2019 New Physics: Sae Mulli.

Myoung Youl PAC*

Institute for High Energy Physics, Dongshin University, Naju 58245, Korea
Correspondence to:
Received May 6, 2019; Revised May 23, 2019; Accepted May 23, 2019.
cc This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
The core collapse supernova (CCSN) releases most of the explosive energy through neutrinos. Therefore, the detection of the CCSN neutrino is essential to understand the temporal evolution of the CCSN. However, since it is difficult to detect neutrinos originating from a CCSN, the possibility of detecting diffuse supernovae neutrino background (DSNB) emitted from the supernovae

in the Universe after the Big Bang is discussed. The results show that $\sim$ 10$^{−3}$ events per year DSNB-induced neutrino events are expected using a 20 t gadolinium-loaded liquid neutrino detector currently used. However, in case of the CCSN being near at hand, the neutrino detector can detect about 1,200 events during the first 10 seconds. This means that the neutrino detector can operate as an alarm system for the CCSN in close proximity to the Sun.

PACS numbers: 26.50.+x, 13.15.+g, 95.55.Vj
Keywords: Liquid scintillator, Core collapse supernova, Neutrino

July 2019, 69 (7)
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