An E baryon, travelling with an energy of 2 GeV, decays electromagnetically into a D baryon and a photon. Sketch how this decay might appear in the general case (i) in the lab frame E D A. Essentially I assume you will have ----> < photon (with the photon and D coming off that with a 90 degree angle between them. (ii) in the rest frame of the E baryon. A. Photon D ------> E <------ The photon approaching each other with equal and opposite momentum. What conditions are necessary for D to have maximum energy. A. D must have equal and opposite momenta to the photon.