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AS I WROTE BEFORE, THEY KNOW NOTHING!So, accordingly with the latest crap from particle physics, electrons
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Best explanation: It exists, and we measured its mass. Ask me in 100
years. Period.
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https://www.quora.com/What-makes-up-the-mass-of-an-electron
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Andy Buckley
Prof in particle physics, visiting researcher at CERN.
Author has 376 answers and 842.4K answer views
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The particle physics answer is not far away from “it just is”. As far as
we know, an electron is a fundamental particle with no internal
structure, so its mass isn’t defined by the energy of a force field that
binds it together (as is mostly the case for protons and neutrons).
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For somewhat arcane theory reasons, we cannot write down electron mass
directly in the governing equations of the Standard Model but instead
need to play a trick called the Higgs mechanism. This tells us that the
electron gains its mass dynamically, by interacting with an omnipresent
Higgs field. So mass is to some extent a measure of how much the
electron field and the Higgs field like to talk to each other.
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And why does the electron like to talk to the Higgs field that much,
while its heavier siblings the muon and tau talk to it a lot more? And
it's much heavier cousins the bottom and top quarks apparently have it
on speed-dial? We don’t know. Yet.
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