Jd. Dedeus et al., MULTIPLICITY AND TRANSVERSE ENERGY-DISTRIBUTIONS ASSOCIATED TO RARE EVENTS IN NUCLEUS-NUCLEUS COLLISIONS, Physics letters. Section B, 409(1-4), 1997, pp. 474-478
We show that in high energy nucleus-nucleus collisions the transverse
energy or multiplicity distribution P-C, associated to the production
of a rare, unabsorbed event C, is universally related to the standard
or minimum bias distribution P by the equation P-C(nu) = nu/(nu)P[nu],
with Sigma P(nu) = 1 and nu = E-T or n. Deviations from this formula
are discussed, in particular having in view the formation of the plasm
a of quarks and gluons. This possibility can be distinguished from abs
orption or interaction of comovers, looking at the curvature of the J/
psi over Drell-Yan pairs as a function of E-T. (C) 1997 Elsevier Scien
ce B.V.