Pomeron fan diagrams in perturbative QCD

• Published in: The journal of high energy physics Vol. 2018; no. 6; pp. 1 - 30
• Main Authors: Bartels, J., Braun, M. A.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-06-2018; Springer Nature B.V; SpringerOpen
• Subjects: Classical and Quantum Gravitation; Deep Inelastic Scattering (Phenomenology); Elementary Particles; Field theory; High energy physics; Inelastic scattering; Physics; Physics and Astronomy; Pomerons; QCD Phenomenology; Quantum Field Theories; Quantum Field Theory; Quantum Physics; Regular Article - Theoretical Physics; Relativity Theory; String Theory; Deep Inelastic Scattering (Phenomenology); QCD Phenomenology
• ISSN: 1029-8479; 1029-8479
• DOI: 10.1007/JHEP06(2018)095

A
bstract
Within QCD reggeon field theory we study the formation of two subsequent triple pomeron vertices in the process P→PP→PPP. We make use of an earlier investigation [
1
] of the six-reggeon amplitude in deep inelastic scattering and show that in the large-
N
c
limit pomeron fan diagrams emerge with the same triple pomeron vertex in all places. We thus confirm the BK-equation, but we also find additional terms related to the reggeization of the gluon, and we discuss their potential significance. Our analysis also includes the general pomeron → two odderon vertex: a particular version of this vertex has been included into earlier generalizations the BK equation.