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(Solved): In the lab frame, a pi_(0) has a energy of 14GeV along the z axis. It decays into two photons. In th ...
In the lab frame, a pi_(0) has a energy of 14GeV along the z axis. It decays into two photons. In the pi_(0) centre of mass, the photons are emitted perpendicular to the z axis. Find the angle (in radiants) between the two photons in the lab frame (the mass of the pi_(0) is m_(pi^(0))?140MeV//c^(2) ).