The baryon number is a property used to classify particles based on their behavior under the strong nuclear force. Baryons, which include particles like protons and neutrons, have a baryon number of +1, while their antiparticles have a baryon number of -1.
The baryon number is not applicable to particles that are not affected by the strong nuclear force, such as electrons. Electrons are part of a class of particles known as leptons, which do not participate in strong interactions. As such, they do not possess a baryon number. The baryon number is specifically associated with particles that are composed of quarks and are subject to the strong force.
Instead, leptons like electrons are characterized by other properties such as electric charge, spin, and lepton number. The electron has an electric charge of -1 and an electron lepton number of +1, which indicates that it is an electron and not its antiparticle (positron).
So, in summary, the electron does not possess a baryon number, as it is not a baryon but a lepton.