A new measurement finds the universe's teensiest particles weigh no more than one-millionth the mass of an electron. Reading time 2 minutes Physicists have placed a new limit on how big the elusive ...
Phys.org: Physicists achieve record precision in measuring proton-to-electron mass ratio with H₂⁺
Over the past few decades, the atomic mass of the electron has been determined using several Penning-trap experiments, because exploration of the scope of validity of the Standard Model requires an ...
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A model for the structure of the electron is proposed, in which the electron is composed of electric tripole, i.e., a +1 charge at the center and two −1 charges circul ...