The GERDA experiment supplies no new evidence that neutrinos
are their own antiparticles
Neutrinos are the most elusive particles having extremely
weak interactions with all other particles. They have rather unusual properties
and are even expected to be identical with their own antiparticles. So far this
property is, however, not experimentally verified. Now scientists of the GERDA
collaboration obtained new strong limits for the so-called neutrino-less double
beta decay, which tests if neutrinos are their own antiparticles. The result
rules out an earlier claim.