Dark force linked to neutrino mass

摘要

THE tiny mass of a neutrino is a big puzzle. The standard model of physics suggests these particles should have no mass, but in experiments we see that they do. Now, Hooman Davoudiasl at Brookhaven National Laboratory in New York and his colleagues suggest a way these can both be true: neutrinos may gain differing amounts of mass through a weak force mediated by dark matter.