# What parity has an electron?

I couldn't find anything about the parity of an electron. Neither in the german, nor in the spanish and nor in the english version of Wikipedia.

I only found one sentence in the parity article of Wiki:

One way to fix a standard parity operator is to assign the parities of three particles with linearly independent charges B, L and Q. In general one assigns the parity of the most common massive particles, the proton, the neutron and the electron, to be +1. - Wiki

But I cannot find other sources to confirm it.

I do not need it for a special exercise, it's just to understand the whole thing...

spin 1/2 fermions (electron, proton, neutron, muon, tau, quarks) have +1 parity (by convention as pointed out in Anna's comment). The corresponding anti-fermions have -1 parity.

Bosons and their anti-particles have the same parity.

Intrinsic parity is determined by experiments , but it is impossible to determine it for the electron or other leptons . But conventionally, it is said that it is for the $e$, $\tau$ and $\mu$, $P = 1$ (according to the book of Martin and Show of particle physics, 3rd edition, chapter 5, section 3, page 130)
$$P(e) = P(t) = P(u) = 1$$ and $$P(\text{anti}\ e) = P(\text{anti}\ \tau) = P(\text{anti}\ \mu) = -1$$