For parity conserving, inclusive reactions of type spin 1 2+ unpolarized → spin 1 2+ anything, we define a set of seven spin rotation parameters, as a generalization of the parameters P, R, A of Wolfenstein. They constitute, with the differential cross section, the whole phenomenological information on this type of reactions for each value of total energy, momentum transfer, and missing mass. Their measurement procedure, by correlated asymmetries of initial and final polarizations, and their allowed positivity domain are explicitly discussed. © 1972.
|Journal||Physics Letters B|
|Publication status||Published - 4 Sep 1972|