Particle physicists chasing ghosts

Wispy neutrinos could explain why matter dominates the universe

PROVIDENCE, R.I. — Two experiments on different continents have found hints that particles called neutrinos can shape-shift in an unexpected way.

This behavior may be the key to understanding why these particles are so weird, says neutrino physicist Jennifer Raaf of the Fermi National Accelerator Laboratory in Batavia, Ill.,