2019/05/31 by V. A. Khoze, A. D. Martin, M. G. Ryskin +2
Physics and Astronomy · #Amplitude #Fusion #HERA #Hadron #High-Energy Particle Collisions Research #Jet (fluid) #Mechanics #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Pomeron #Production (economics) #Proton #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Rapidity #Recoil #hep-ph
paper · pdf · doi:10.1140/epjc/s10052-019-7120-x
15 pages, 4 figures, version to be published in EPJC
openalex publication_date 2019/07/01 · arxiv created 2019/07/16 · arxiv updated 2019/09/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We consider the central exclusive production of high ET jets pp→ p+(X+dijet)+p . In particular we study the possible contamination of the purely exclusive signal by semi-exclusive production where no other secondaries are emitted in one hemisphere, between the highest ET dijet and the recoil proton, while in the other hemisphere a third jet, plus possibly additional hadron activity, is allowed, but still separated from the incoming proton by a large rapidity gap. This process arising from the fusion of a hard and a soft Pomeron has not been considered before. It turns out that it gives a negligible contribution. The calculation involves a careful treatment of the QCD colour structure of the amplitudes.