Evidences for nonextensivity conjugation in hadronic scattering systems

In this Letter the degrees of nonextensivity of the hadronic quantum scattering systems is investigated by using Tsallis-like scattering entropies SJ(p) and Sθ(q), p,q∈R. Then, evidences for strong nonextensive statistical effects, with nonextensivity indices 1/2⩽p⩽0.6, as well as, for the (1/2p+1/2q=1)-nonextensivity conjugation, are obtained by fitting the pion–nucleus experimental entropies with the PMD-SQS-optimal state predictions. The interpretation of these strong nonextensive statistical effects as indirect manifestations of the presence of the quarks and gluons in the hadronic quantum system is suggested.