how many proton email addresses are you allowed to have

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Journal reference: Science, DOI: 10.1126/science. “If at some point in the future, somebody will discover something beyond the standard model, it would be like this,” says Pohl, with first one small discrepancy, then another and another, slowly building to a more monumental shift. That could mean the puzzle is taking us beyond the standard model of particle physics. But this constant is well established through other precision experiments, so something drastic would have to have gone wrong.Īnother explanation proposes new particles that cause unexpected interactions between the proton and the muon, without changing its relationship with the electron. Pohl suspects the culprit may not be the proton itself, but an incorrect measurement of the Rydberg constant, a number that describes the wavelengths of light emitted by an excited atom. Another plans to simultaneously measure the scattering of muons and electrons.

One will return to the same muon technique to measure the size of heavier atomic nuclei, like helium. Several more experiments, at Pohl’s lab and others, are already under way. “It’s still very open, and the only thing that’s going to allow us to solve it is new data.” “It tells us that there’s still a puzzle,” says Downie. Downie at the George Washington University in Washington DC. These new numbers show that the proton radius problem isn’t going away, says Evangeline J. Today, the team have published their measurements, revealing that like the proton, the deuteron comes up short: in this case by 0.8 per cent. “The only thing that’s going to allow us to solve it is new data”

How many proton email addresses are you allowed to have