Possible Sign of Annihilating Majorana Pairs

Particle physicists have been searching for over 70 years for a hypothetical particle, called a Majorana fermion, that is its own antiparticle. Last year, condensed matter physicists reported a Majorana-like state in a superconducting device, but this interpretation is still under dispute. A new experiment with a similar device has obtained Majorana-like signatures. The results, described in Physical Review Letters, may provide the first evidence of “annihilations” between Majorana pairs.