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The unusually large Muon has threatened the Standard Model for decades, but new data parks the particle inside the confines of established physics. The BMW Collaboration’s recently posted research suggests the difference between the muon’s predicted anomalous magnetic moment and that predicted by the Standard Model is not as large as previous findings suggested.

The researchers identified the origin of discrepancies in recent predictions of the muon’s magnetic moment. Their findings could contribute to the investigation of dark matter and other aspects of the new physics.

Recent research on muons reveals inconsistencies between observed magnetic behaviors and theoretical predictions, hinting the potential discovery of new physical phenomena or the need to update quantum mechanics theories.

The Muon g-2 collaboration recently reported a new measurement of the so-called positive muon magnetic moment anomaly to a precision of 140 parts per billion. The collaboration’s findings are published in the journal Physical Review Letters.

Which theory on gravity is the most accurate at describing reality? Don Lincoln suggests perhaps we have reached a moment of scientific Zen and that gravity just is.

From Big Think: A recent series of precise measurements of the Moon confirms that there are two types of mass which are the same. In Einstein’s most advanced theory, there are three “kinds” of mass that are thought to be one and the same but there is no fundamental reason why. Don Lincolns explains why.

From RTS (Swiss Broadcasting Corporation), Sept. 7, 2023: Fermilab’s August 10 announcement indicated the muon does not behave as theory predicts. Professor Tobias Golling, from the particle physics department at the University of Geneva, explains in a video that there are two possibilities to explain the observed discrepancy.

From Popular Science, August 17, 2023: Breaking the Standard Model would be one of the biggest moments in particle physics history. The Muon g-2 collaboration reported that the muon doesn’t always look like physicists expect it to look, but the collaboration isn’t done. Once they analyze all the remaining data, physicists believe they can make their g minus 2 estimate twice as precise again.

From Le Monde, August 16, 2023: The characteristics muons were analyzed in an ongoing experiment by the Muon g-2 collaboration at Fermilab and the results are shaking up the theory community.

The quest to understand the small mass of neutrinos is also a quest to discover new particles.