The reason why I decided to compute the bremsstrahlung contribution to the proton electro-excitation can be understood after knowing a bit more about the detector used in the E-158 experiment. This detector might be thought as a series of concentric rings. The innermost is the Møller ring (which is actually made up of three rings), where the Møller events are detected. The outermost ring is the EP ring where most of the elastic and quasi-elastic events are restricted. Electrons which undergo inelastic scattering, might end up in both detectors. Very roughly, one might assume that, for 50 GeV electron beam, the events with energy between 12.5 and 25 GeV end up in the Møller ring, while those with energy in the range 25 to 50 GeV are detected in the EP ring. The electron resulting from the proton electro-excitation, are normally confined in the EP ring. But if the electron undergoes a bremsstrahlung process, emitting a photon either before or after the scattering off the proton, it might lose enough energy so that it ends up in the Møller ring.

### Language ###
English

### Assessment ###
Find out the energy range for events detected in the Møller ring

### Query ###
Tell me the energy window in GeV where particles get picked up by the Møller detector
Tell me the energy window in GeV where particles get picked up by the Møller detector