This title appears in the Scientific Report :
2006
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevD.74.074021 in citations.
Please use the identifier: http://hdl.handle.net/2128/10568 in citations.
Unitarity cutting rules for the nucleus excitation and topological cross-sections in hard production off nuclei from nonlinear k-perpendicular factorization
Unitarity cutting rules for the nucleus excitation and topological cross-sections in hard production off nuclei from nonlinear k-perpendicular factorization
At the partonic level, a typical final state in small-x deep inelastic scattering off nuclei and hard proton-nucleus collisions can be characterized by the multiplicity of color-excited nucleons. Within the Reggeon field theory, each color-excited nucleon is associated with the unitarity cut of the...
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Personal Name(s): | Nikolaev, N. N. |
---|---|
Schaefer, W. | |
Contributing Institute: |
Institut 3 (Theoretische Kernphysik); IKP-TH |
Published in: | Physical Review D Physical review / D, 74 74 (2006 2006) 7 7, S. 074021 074021 |
Imprint: |
[S.l.]
Soc.
2006
2006-10-27 2006-10-01 |
Physical Description: |
074021 |
DOI: |
10.1103/PhysRevD.74.074021 |
Document Type: |
Journal Article |
Research Program: |
Physik der Hadronen und Kerne |
Series Title: |
Physical Review D
74 |
Subject (ZB): | |
Link: |
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Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/10568 in citations.
At the partonic level, a typical final state in small-x deep inelastic scattering off nuclei and hard proton-nucleus collisions can be characterized by the multiplicity of color-excited nucleons. Within the Reggeon field theory, each color-excited nucleon is associated with the unitarity cut of the Pomeron exchanged between the projectile and nucleus. In this communication we derive the unitarity rules for the multiplicity of excited nucleons, alias cut pomerons, alias topological cross sections, for typical hard dijet production processes. We demonstrate how the coupled-channel non-Abelian intranuclear evolution of color dipoles, inherent to pQCD, gives rise to the Reggeon field theory diagrams for final states in terms of the uncut, and two kinds of cut, Pomerons. Upon the proper identification of the uncut and cut-Pomeron exchanges, the topological cross sections for dijet production follow in a straightforward way from the earlier derived nonlinear k(perpendicular to) factorization quadratures for the inclusive dijet cross sections. The concept of a coherent (collective) nuclear glue proves extremely useful for the formulation of the Reggeon field theory vertices of multi-Pomeron-cut and uncut-couplings to particles and between themselves. A departure of our unitarity cutting rules from the ones suggested by the pre-QCD Abramovsky-Kancheli-Gribov rules, stems from the coupled-channel features of non-Abelian intranuclear pQCD. We propose a multiplicity resummation as a tool for the isolation of topological cross sections for single-jet production. |