TY - JOUR
T1 - Experimental method of detecting relic neutrino by atomic de-excitation
AU - Yoshimura, M.
AU - Sasao, N.
AU - Tanaka, M.
N1 - Publisher Copyright:
© 2015 American Physical Society.
Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 2015/3/9
Y1 - 2015/3/9
N2 - The cosmic background neutrino of temperature 1.9 K affects rates of radiative emission of neutrino pairs (RENP) from metastable excited atoms, since its presence blocks the pair emission by the Pauli exclusion principle. We quantitatively investigate how the Pauli blocking distorts the photon energy spectrum and calculate its sensitivity to cosmic parameters such as the neutrino temperature and its chemical potential. Important quantities for high sensitivities to these parameter measurements are found to be the level spacing of atomic deexcitation and the unknown mass value of the lightest neutrino, in particular, their relationship to one another.
AB - The cosmic background neutrino of temperature 1.9 K affects rates of radiative emission of neutrino pairs (RENP) from metastable excited atoms, since its presence blocks the pair emission by the Pauli exclusion principle. We quantitatively investigate how the Pauli blocking distorts the photon energy spectrum and calculate its sensitivity to cosmic parameters such as the neutrino temperature and its chemical potential. Important quantities for high sensitivities to these parameter measurements are found to be the level spacing of atomic deexcitation and the unknown mass value of the lightest neutrino, in particular, their relationship to one another.
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U2 - 10.1103/PhysRevD.91.063516
DO - 10.1103/PhysRevD.91.063516
M3 - Article
AN - SCOPUS:84924362941
VL - 91
JO - Physical Review D
JF - Physical Review D
SN - 0556-2821
IS - 6
M1 - 063516
ER -