Breit frame
In particle physics, the Breit frame is a frame of reference used to describe scattering experiments of the form, that is experiments in which particle scatters off particle, possibly producing particles in the process. The frame is defined so that the particle A has its momentum reversed in the scattering process.
Another way of understanding the Breit frame is to look at the elastic scattering. The Breit frame is defined as the frame in which. There are different occasions when Breit frame can be useful, e.g., in measuring the electromagnetic form factor of a hadron, is the scattered hadron; while for deep inelastic scattering process, the elastically scattered parton should be considered as. It is only in the latter case the Breit frame gets related to infinite-momentum frame.
It is named after the American physicist Gregory Breit.