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An "archaeological'' quest for galactic supernova neutrinos

Abstract : We explore the possibility to observe the effects of electron neutrinos from past galactic supernovae, through a geochemical measurement of the amount of Technetium 97 produced by neutrino-induced reactions in a Molybdenum ore. The calculations we present take into account the recent advances in our knowledge of neutrino interactions, of neutrino oscillations inside a supernova, of the solar neutrino flux at Earth and of possible failed supernovae. The predicted Technetium 97 abundance is of the order of 107 atoms per 10 kilotons of ore, which is close to the current geochemical experimental sensitivity. Of this, ~ 10−20% is from supernovae. Considering the comparable size of uncertainties, more precision in the modeling of neutrino fluxes as well as of neutrino cross sections is required for a meaningful measurement.
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http://hal.in2p3.fr/in2p3-00388961
Contributor : Sophie Heurteau <>
Submitted on : Thursday, May 28, 2009 - 10:43:01 AM
Last modification on : Monday, December 14, 2020 - 4:16:02 PM

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R. Lazauskas, C. Lunardini, C. Volpe. An "archaeological'' quest for galactic supernova neutrinos. Journal of Cosmology and Astroparticle Physics, Institute of Physics (IOP), 2009, 04(2009), pp.029. ⟨10.1088/1475-7516/2009/04/029⟩. ⟨in2p3-00388961⟩

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