Unlike the charged leptons, the electrically neutral leptons, the neutrinos, do not come under the influence of the electromagnetic force.
The charged leptons are the electrons, muons, and taus.
The electron, with a mass of 0.511 megaelectron volts (MeV; 106 eV), is the lightest of the charged leptons.
In 1966 Perl was part of a research team that made an unsuccessful attempt to discover new charged leptons by colliding electrons at the Stanford Linear Accelerator Center SLACC).
By examining the oscillations, to learn of these differences, physicists should be able to ascertain whether neutrinos resemble other sub-atomic species, such as quarks and charged leptons (a family which includes the electron), or are a category apart.
Fig. 2 Neutrino and charged leptons interaction/decay lengths (Beacom et al., 2002) vs energy.
One of our aims is to explore the role of the non-standard interactions (NSI) in the leptonic sector and specifically: (i) in lepton flavour violating (LFV) processes involving the neutral particles νℓ and ˜νℓ, ℓ= e,μ,τ and (ii) in charged lepton flavour violating (cLFV) processes involving the charged leptons ℓ− or ℓ+.
The second and third generation contain charged leptons, the muon and the tau, which are identical to the electron in charge, spin and interactions, but are more massive.
Electrons have the lowest mass of any charged lepton (or electrically charged particle of any type) and belong to the first-generation of fundamental particles.
