Physicists have found that an elementary particle called the W boson appears to be 0.1 percent too heavy—a tiny discrepancy that could foreshadow a huge shift in fundamental physics. The measurement, ...
A “muon shot” aims to study the basic forces of the cosmos. But meager federal budgets could limit its ambitions. By Dennis Overbye and Katrina Miller Friday, Dec. 8: This story was updated to include ...
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