New results from WA102 experiment

摘要

A study of central meson production as a function of the azimuthal angle phi between the two outgoing protons show that the phi distributions are different for the different J(PC) of the central system and that the observed distributions are consistent with the DPE mediated by two vector Pomerons. In addition, the distributions of the difference in transverse momentum (dP(T)) of exchange particles are significantly different for the undisputed q (q) over bar states and the glueball candidates. The S-wave spectrum of the centrally produced K (K) over bar, and pi pi systems show evidence on f(0)(980), f(0)(1370), f(0)(1500) and f(J)(1710) states production. The spin of f(J)(1710) is unambiguously identified as J=0. [References: 27]