24 July 2022 to 2 August 2022
House of International Conferences
Europe/Moscow timezone

The Diffuse Supernova Neutrino Background in the Standard and Double Collapse Models

30 Jul 2022, 20:00
House of International Conferences

House of International Conferences

Dubna, Russia
Board: 22
Poster (A1, preferably portrait orientation) Young Scientist Forum Poster Session


Mr Andrey Sharofeev (INR RAS & MSU)


The diffuse supernova neutrino background (DSNB) is a powerful future tool to constrain core-collapse explosion mechanisms without observation of a nearby event, and the corresponding signal has been calculated for a variety of collapse models. For Supernova (SN) 1987A, a peculiar double neutrino burst was detected, but models for the double collapse have never been studied in the DSNB context. Here, we fill this gap and compare the DSNB signal expected in the Standard Collapse (SC) and the Double Collapse (DC) models in various future detectors, including Hyper-Kamiokande, JUNO, DUNE and the Large Baksan Neutrino Telescope (LBNT). We calculate the spectra of diffuse neutrinos and antineutrinos in the DC model and determine the rate of registered events as a function of energy of the detected particle, taking into account detector parameters. For each detector, we estimate the corresponding uncertainties and the background and compare the signals expected for the SC and DC models. We conclude that the combination of DUNE and LBNT data will have the highest sensitivity to discriminate between the SC and DC models.

Primary authors

Mr Andrey Sharofeev (INR RAS & MSU) Mr Alexander Libanov (INR RAS, MSU)

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