Gluon Spins Align with the Proton They’re In (IMAGE)
Caption
Comparing the number of direct photons emitted when proton spins point in opposite directions (top) with the number emitted when protons collide head-to-tail (bottom) revealed that gluon spins align with the direction of proton spin.
Credit
Image courtesy of Brookhaven National Laboratory
Usage Restrictions
Image courtesy of Brookhaven National Laboratory
License
Original content