In the new particle, the up quark circulates around the two heavy charm quarks at the center. “You get something far more like an atom,” Dr. Spradlin said. Theorists like Dr. Rosner had difficulty explaining the behavior of the Fermilab particle within the Standard Model. They definitely have something.”But he said the Fermilab findings still stood, too. “We should be able to see it with the data we have,” Dr. Spradlin said.

Source: New York Times July 06, 2017 23:03 UTC