J/Ψ PRODUCTION IN HIGH ENERGY PARTICLE AND NUCLEAR COLLISIONS: SUPPRESSED, ENHANCED, OR JUST NORMAL?

Abstract

The oncoming recent data on production of J/Ψ mesons in some high energy particle and nuclear collisions are of special importance in view of the controversies centering around the so-called suppression or enhancement mechanisms for this particle-species. We will try to explain here the features of some of the basic observables on J/Ψ production with the help of an approach which has no direct links with quark–gluon plasma (QGP) considerations, but can interpret a large amount of data related to the proposed physical signatures of QGP. The final outcome, based on the present study, amounts to stating the fact that the J/Ψ production is neither suppressed nor enhanced; rather it exhibits both in our theoretical approach and also in the experimental measurements a behavior which is just as normal as many other secondaries, with only specificities of its own intrinsic quantum numbers and the very massive nature.