Beta particles refer to electrons or positrons that are emitted from the nucleus of an atom during beta decay. Electrons are already the fastest-moving subatomic particles in an atom, while protons and neutrons are relatively slower-moving. Photons, on the other hand, are not subatomic particles but rather packets of electromagnetic energy that have no mass or charge and travel at the speed of light. Therefore, beta particles (electrons or positrons) are indeed faster-moving than protons, neutrons, and photons.