Simulation of the LSD Response to the Neutrino Burst from SN 1987A

• Published in: Journal of experimental and theoretical physics Vol. 134; no. 3; pp. 277 - 289
• Main Authors: Manukovskiy, K. V., Yudin, A. V., Agafonova, N. Yu, Malgin, A. S., Ryazhskaya, O. G.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-03-2022; Springer; Springer Nature B.V
• Subjects: Astrophysics; Classical and Quantum Gravitation; Detectors; Elementary Particles; Energy spectra; Fields; Gravitation; Hypotheses; Mathematical models; Neutrinos; Nuclei; Parameters; Particle and Nuclear Physics; Particles; Physics; Physics and Astronomy; Quantum Field Theory; Radiation; Relativity Theory; Simulation; Solid State Physics
• ISSN: 1063-7761; 1090-6509
• DOI: 10.1134/S1063776122030165

Using the Geant4 code, we have performed a full-scale simulation of the LSD response to the neutrino burst from SN 1987A. The neutrino flux parameters were chosen according to one of the models: the standard collapse model or the rotational supernova explosion model. We showed that, depending on the chosen parameters, one can either obtain the required number of pulses in the detector or reproduce their energy spectrum, but not both together. The interaction of neutrino radiation both with LSD itself and with the material of the surrounding rock was taken into account in our simulation. We also explored the hypothesis that the entire unique LSD signal at 2:52 UT was produced by neutrino fluxes from the surrounding granite. However, this hypothesis was not confirmed by our simulation. The results obtained provide a rich material for possible interpretations.