Electrons might live forever.
Analysis
The majority of references indicate that electrons do not decay and suggest they may have an extremely long lifetime, potentially living indefinitely. Experimental evidence supports the idea that electrons are stable and do not have a defined lifespan. However, some references discuss the behavior of electrons in semiconductors, where their effective lifetime can be influenced by external factors. Despite this, the fundamental nature of electrons as stable particles under normal conditions supports the statement that electrons might live forever, making it more likely to be correct.
Sources
The electron would decay into a photon and neutrino if the law of electric charge conservation is not respected.
In indirect band gap semiconductors, the carrier lifetime strongly depends on the concentration of recombination centers.
our experiments have determined no electron decays, and they can give a limit for the lifetime.
We know that in a semiconductor in every instant of time some electrons get excited from valence band to conduction band and some electrons are deexcited from conduction band to valence band.
The best measurement yet of the ... is about five-quintillion times the current age of the universe.
Because the decay of negatively charged electrons into neutral particles seems even less likely than before, the results also confirm the fundamental law saying that net electric charge is conserved.
It's NOT an actual lifetime! It indicates the "state of the art" of our experimental techniques in attempting to determine whether the electron really does decay after all.
An experiment in 2015 showed that the lifetime of an electron, if it does decay, must be at least 6.6 ...
The electron is expected to be absolutely stable because it is the lightest charged particle under electricity and magnetism.
To further understand the physical processes, the effects of high optical fluence, material doping, annealing, and electrical bias on carrier lifetime are also reviewed.
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