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Tauonium: the smallest and heaviest atom with pure electromagnetic interaction - EurekAlert


<p>In an article published in Science Bulletin, it is shown that with a data collection of 1.5 ab-1 &nbsp;near the threshold of tau pair production in an electron and positron collider, the significance of observing the tauonium signal exceeds 5&sigma;. Additionally, using the same dataset, the precision of measuring the tau lepton mass can be improved to 1 keV , two orders of magnitude higher than the current best experimental precision.</p>

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