Physics
Scientific paper
Sep 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998phlb..435..381j&link_type=abstract
Physics Letters B, Volume 435, Issue 3-4, p. 381-388.
Physics
3
Relic, Neutrino, Mass, Coherent, Degenerate, Tritium
Scientific paper
The unphysical result of the negative mass square of the electron neutrinos recently reported in several tritium β-decay experiments, is one of the most attractive subjects among remaining physical problems. As a possible scenario to explain the anomaly, we have assumed a reaction with relic neutrinos which are predicted by the standard big bang cosmology. If such neutrinos could exist, the interaction of the relic neutrinos with the target tritium, νe+3H-->3He+e- could be laid under the large amount of the β-decay process, 3H-->3He+e-+νē, which would cause a peak-like structure beyond the end-point in the Kurie plot. Based on the assumption, we evaluated the cross section from the event rate found in the peak by re-fitting to the 1991 data published by the Mainz Group. In this letter we will provide a scenario that can account for the evaluated cross section by introducing a spatially inhomogeneous neutrino degeneration, which would result much lower temperature than the prediction from the standard big bang cosmology.
Homma Keiichi
Jinnouchi Osamu
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