The arthicle states:
"... 480 picoelectronvolts (PeV), a measure of a particle's mass."
Is this a typo? PeV is Peta electron Volts, not pico electron Volts.
Peta, is the SI prefix for 10^15, while pico is the SI prefix for 10^-12.
That's a big difference.
480 pico eV is very small...