Exotic fragmenting states in inclusive reactions

The general inclusive process a+b→c+X is considered in the b fragmentation region. It is proved that if the fragmenting state (bc̄) is exotic, the presence or absence of energy-dependent terms in the invariant cross section f cannot depend on whether or not (abc̄) is exotic. If f is a smooth function of the kinematic variables, there must be a nonzero but limited region of the variables, in which the energy-dependent terms for exotic (bc̄) are small compared to their average size when (bc̄) is not exotic. In this region, present experimental evidence is in agreement with the hypothesis that the energy-dependent terms are small when (abc̄) is exotic.