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Submission + - Particle Physics Experiment Determines Proton's Weak Charge (jlab.org)

wdconinc writes: At Jefferson Lab, a particle physics lab in Virginia, physicists have determined for the first time the weak charge of the proton. Similar to the electric charge of electromagnetism, the weak charge describes how strongly protons interact through the weak interaction responsible for many radioactive decays. Precise predictions for the weak charge have been around for decades, but this is the first time that its value has been measured! The value agrees with the prediction, but the experimenters have 25 times more data to analyze. With that data they could be sensitive to the same supersymmetric particles that the Large Hadron Collider is searching for. The full paper can be found on the arxiv.
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Particle Physics Experiment Determines Proton's Weak Charge

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