7. Investigation of the [[Standard Model|Yang-Mills existence and gap]]; specifically, whether Yang-Mills theory predicts particles with negative mass, and whether it contains any contradictions. Demonstrations of either negative-mass predictions or contradictions would provide clues as to how to build a more accurate theory. | 7. Investigation of the [[Standard Model|Yang-Mills existence and gap]]; specifically, whether Yang-Mills theory predicts particles with negative mass, and whether it contains any contradictions. Demonstrations of either negative-mass predictions or contradictions would provide clues as to how to build a more accurate theory. |