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News From the Field

Sea quark surprise reveals deeper complexity in proton spin puzzle


March 14, 2019

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New data from the STAR experiment at the Relativistic Heavy Ion Collider add detail -- and complexity -- to an intriguing puzzle that scientists have been seeking to solve: how the building blocks that make up a proton contribute to its spin. The results reveal that different "flavors" of antiquarks contribute differently to the proton's overall spin -- and in a way that's opposite to those flavors' relative abundance. Full Story

Source
DOE/Brookhaven National Laboratory

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