Beta decay of 115-In to the first excited level of 115-Sn: Potential outcome for neutrino mass
Abstract
Recent observation of beta decay of 115-In to the first excited level of 115-Sn with an extremely low Qbeta value (Qbeta ~ 1 keV) could be used to set a limit on neutrino mass. To give restriction potentially competitive with those extracted from experiments with 3-H (~2 eV) and 187-Re (~15 eV), atomic mass difference between 115-In and 115-Sn and energy of the first 115-Sn level should be remeasured with higher accuracy (possibly of the order of ~1 eV).
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