A measurement of the cosmic ray spectrum and composition at the knee

After a short review of Q-balls properties, in this paper, we discuss their interaction with matter, and their energy losses in the earth, for a large range of velocities. These calculations are used to compute the fractional angular acceptance of a detector at Gran Sasso laboratory. Furthermore, we computed the light yield in liquid scintillators, the ionization in streamer tubes and the restricted energy loss in the CR39 nuclear track detector.