SCATTERING CROSS-SECTIONS OF THE PHOTINO AND THE GOLDSTINO (GRAVITINO) ON MATTER

The photino and the goldstino (which is absorbed into the massive gravitino if supersymmetry is realized locally) can scatter on matter. We give the corresponding lagrangian density and compute the cross sections. Those of the photino may be much larger than ordinary weak interaction cross sections. Those of the goldstino (gravitino), proportional to GNewton/m 3 22, may be negligible or on the contrary relatively large, depending on the value of the gravitino mass m 3 2. © 1979.