I have read quite recently this article here:
in which it is explained that an Anti-positron is actually a different discrete particle from an electron.
This confused me because I thought an "Anti-positron" being an alternative name for the electron.
Is an Anti-positron really a discrete different particle from an electron or just the same electron particle as relativistically observed by a faster moving observer frame of reference, overtaking the electron and therefore observing a flip on its helicity for example from left handed (left helicity) to right handed (right helicity)?
Both of the Anti-positron and electron have the same charge invariance namely, charge -e.
Also what happens to the chirality of these two types of particles (could be the same particle)? Is chirality an invariant in this case, meaning the left chiral electron due to a relativistic observer, observed as a Anti-positron is still regarded of being left-chiral? Or for example because it has flipped relativistically its helicity from left to right has now also a right chirality?
Illustration source credits: https://www.quantumdiaries.org/2011/06/19/helicity-chirality-mass-and-the-higgs/
(gray arrow is the momentum direction of the fermion particles)
warning: the above illustration retrieved from the above mentioned source link comparing the relative helicities of electron and positron particles with their Anti-particles versions could not be entirely correct. Curled arrows indicate the spin's rotational direction and with red indicating a right-handed particle (right helicity) and with blue a left-handed particle (left heliity).