Particle Production at High Energy: DGLAP, BFKL and Beyond
Particle production in high energy hadronic/nuclear collisions in the Bjorken limit Q 2 , s → ∞ can be described in the collinear factorization framework of perturbative Quantum ChromoDynamics (QCD). On the other hand in the Regge limit, at fixed and not too high Q 2 with s → ∞ , a k ⊥ factorization...
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Published in | Universe (Basel) Vol. 5; no. 2; p. 64 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
Basel
MDPI AG
01.02.2019
MDPI |
Subjects | |
Online Access | Get full text |
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Summary: | Particle production in high energy hadronic/nuclear collisions in the Bjorken limit Q 2 , s → ∞ can be described in the collinear factorization framework of perturbative Quantum ChromoDynamics (QCD). On the other hand in the Regge limit, at fixed and not too high Q 2 with s → ∞ , a k ⊥ factorization approach (or a generalization of it) is the appropriate framework. A new effective action approach to QCD in the Regge limit, known as the Color Glass Condensate (CGC) formalism, has been developed which allows one to investigate particle production in high energy collisions in the kinematics where collinear factorization breaks down. Here we give a brief overview of particle production in CGC framework and the evolution equation which governs energy dependence of the observables in this formalism. We show that the new evolution equation reduces to previously known evolution equations in the appropriate limits. |
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Bibliography: | SC0002307; FG02-09ER41620 USDOE Office of Science (SC), Nuclear Physics (NP) |
ISSN: | 2218-1997 2218-1997 |
DOI: | 10.3390/universe5020064 |