A beta photon is not a well-known term or concept in physics. It appears to be a combination of two different terms: "beta" and "photon."
Beta particle: Beta particles are high-energy electrons or positrons (positively charged electrons) emitted during radioactive decay. They are produced when an atomic nucleus undergoes a transformation, resulting in the conversion of a neutron into a proton or vice versa. The emission of beta particles is accompanied by the release of energy in the form of gamma rays or X-rays.
Photon: A photon is a fundamental particle of light and other forms of electromagnetic radiation. It is an elementary particle that carries energy and momentum. Photons have no mass and travel at the speed of light.
It is important to note that beta particles (electrons or positrons) and photons are distinct entities. Beta particles are charged particles, whereas photons are uncharged particles. It is unclear what specifically you are referring to when you mention a "beta photon." If you can provide more context or clarify your question, I would be happy to help further.