The Disintegration of Mesotrons

Bruno Rossi; H. van Norman Hilberry; Jeffrey B. Hoag

doi:10.1103/physrev.56.837.2

October 15, 1939Physical Review

The Disintegration of Mesotrons

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Key Points

Investigate whether cosmic-ray mesotrons undergo spontaneous radioactive disintegration during transit through the atmosphere and dense matter.
Measured cosmic-ray mesotron intensities across varying atmospheric altitudes and through dense absorbing materials.
Evaluated particle survival rates as a function of transit time to differentiate between energy-loss absorption and spontaneous decay.
Observed an anomalous reduction in mesotron intensity that correlates with time of flight rather than matter density alone.
Demonstrated that mesotrons undergo spontaneous disintegration in flight, establishing that these subatomic particles possess a finite, measurable mean lifetime.

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Implication

Experimental study demonstrates spontaneous disintegration of cosmic-ray mesotrons in atmospheric transit, indicating unstable elementary particles possess a finite radioactive lifetime.

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Cite This Study

Rossi et al. (1939) studied this question.

synapsesocial.com/papers/6a1bde650a1f7575939d1642 https://doi.org/10.1103/physrev.56.837.2

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The Disintegration of Mesotrons

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The Disintegration of Mesotrons

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Implication

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