Antiproton interactions are symmetric with proton interactions
DOI: 10.1063/PT.5.029350
BBC : For the first time, researchers have measured the strength of the interactions between antiprotons. The STAR Collaboration at Brookhaven National Laboratory used the Relativistic Heavy Ion Collider to collide gold ions and found that the resulting particle cascade produces nearly as many antiprotons as protons. The two types of particles can be distinguished because of their opposite charges, which cause them to curve in opposite directions in a magnetic field. According to the team’s measurements, the interactions between the antiprotons are indistinguishable from the interactions between the protons. If the interactions had not been symmetric, the discrepancy may have explained why there is vastly more regular matter than antimatter in the observed universe. Now researchers must look elsewhere for the reason.
