We study the possibility of detecting the background of supernova relic neutrinos ( SRN) with liquid argon time projection chamber (TPC) detectors. As far as this study is concerned, these experimental devices are mainly sensitive to electron neutrino signals, and could provide further information on both the supernova explosion mechanism and the star formation rate at redshifts z less than or equal to 1. We study in detail the main contributions to background in the relevant energy range from (8)B and hep solar neutrinos as well as from low energy atmospheric neutrino fluxes. Depending on the theoretical prediction for the SRN flux we find that for a 3 kton and a 100 kton liquid argon TPC detector the signal may be observed at the 1sigma and 4sigma level, respectively, with five years of data taking.
Supernova relic neutrinos in liquid argon detectors / Cocco, A. G.; Ereditato, A.; Fiorillo, Giuliana; Mangano, G.; Pettorino, V.. - In: JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS. - ISSN 1475-7516. - ELETTRONICO. - 12:(2004), pp. 002-002. [10.1088/1475-7516/2004/12/002]
Supernova relic neutrinos in liquid argon detectors
FIORILLO, GIULIANA;G. Mangano;
2004
Abstract
We study the possibility of detecting the background of supernova relic neutrinos ( SRN) with liquid argon time projection chamber (TPC) detectors. As far as this study is concerned, these experimental devices are mainly sensitive to electron neutrino signals, and could provide further information on both the supernova explosion mechanism and the star formation rate at redshifts z less than or equal to 1. We study in detail the main contributions to background in the relevant energy range from (8)B and hep solar neutrinos as well as from low energy atmospheric neutrino fluxes. Depending on the theoretical prediction for the SRN flux we find that for a 3 kton and a 100 kton liquid argon TPC detector the signal may be observed at the 1sigma and 4sigma level, respectively, with five years of data taking.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.