We’ve seen particles that are massless only in one direction

Unusual particles which have mass when transferring one route however no mass when transferring in one other had been first theorised greater than a decade in the past. Now, these mass-shifting particles have been glimpsed in a semimetal uncovered to excessive situations.

“This [particle] may be very weird. You may think about strolling on the streets of New York and should you go straight, you’re tremendous gentle, you’re massless. However flip 90 levels east or west, and also you turn out to be tremendous huge,” says …