Dc. Zhou et al., A RIGIDITY MEASUREMENT OF PSEUDO-RAPIDITY SPECTRUM OF PRODUCED PARTICLES IN HIGH-ENERGY NUCLEUS-NUCLEUS COLLISIONS, Chinese Physics Letters, 15(8), 1998, pp. 566-567
A new concept, rigidity of pseudo-rapidity spectrum, is extended into
the study of the multiplicity fluctuations in high energy nucleus-nucl
eus interactions. In using the novel method to analyse the data of O-1
6-Em at 14.6, 60, and 200 A GeV, and S-32-Em at 200A GeV, it is found
that the rigidity of pseudo-rapidity spectrum in the central domain of
pseudo-rapidity might be a mixture of Poisson type and Wigner one.