Peripheral Production of Sigmas in Proton Proton Collisions
  The Pomeron, which dominates high energy elastic and diffractive hadronic processes, must be largely gluonic in nature. We use a recent picture of a scalar glueball/sigma system with coupling of the sigma to glue determined from experiment to predict strong peripheral sigma production seen in the p p $\pi^o\pi^o$ final state. 
Leonard S. Kisslinger (Carnegie Mellon University), Wei-hsing Ma   (Institute of High Energy Physics, Beijing) and Pengnian ...